{
  "report_id": "coalescent-native-vs-astral-v578-calibration-v1",
  "title": "Quartet Multispecies Coalescent & Incomplete Lineage Sorting Calibration: Native Rust Quartet MSC Engine vs. ASTRAL v5.7.8 Across 1,064 Gene Trees (28.64 Million Quartets)",
  "default_policy": "CoalescentMode::Native (4-Stage Quartet MSC + LPP + ABBA-BABA) is the default across all bio-suite multi-locus workflows; external ASTRAL v5.7.8 is invoked only when --coalescent astral is explicitly passed.",
  "astral_version": "ASTRAL v5.7.8 (Mirarab et al. 2014 / Zhang et al. 2018; OpenJDK 21.0.12.1 64-Bit Server VM)",
  "upstream_native_stack": "AlignerMode::Native (Gotoh Affine-Gap) -> ModelTestMode::Native (Felsenstein Pruning) -> TreeBuilderMode::Native (4-Stage ML BIONJ+NNI)",
  "total_duration_ms": 2933,
  "total_cohorts_evaluated": 4,
  "total_gene_trees_analyzed": 1064,
  "total_quartets_evaluated": 28656824,
  "mean_topological_concordance_pct": 100.0,
  "mean_q1_pearson_r": 1.0,
  "mean_branch_cu_pearson_r": 0.9873,
  "mean_native_speedup_factor": 23.7899,
  "cohorts": [
    {
      "cohort_id": "COHORT-01-CARNIVORA-16TAXA-NATIVE-CHAIN",
      "title": "16-Taxon Carnivora Sub-Locus Window Coalescent Panel (16 ML Trees Built via 100% Native Upstream Stack)",
      "taxonomic_scope": "Order Carnivora (Feliformia vs. Caniformia: Felidae, Canidae, Ursidae, Mustelidae, Phocidae)",
      "upstream_pipeline_provenance": "100% Native Upstream Stack: Native Gotoh Aligner v2 -> Native Felsenstein ModelTest (best model HKY+I) -> 16 Window ML Gene Trees via Native BIONJ+NNI (239.5 ms total upstream)",
      "taxa_count": 16,
      "internal_branches_count": 13,
      "gene_tree_count": 16,
      "total_quartets_evaluated": 29120,
      "native_result": {
        "engine_name": "bio-suite Native Quartet MSC v1 (Exact Tripartition DP + Quartet NNI + LPP)",
        "engine_mode": "CoalescentMode::Native",
        "taxa_count": 16,
        "gene_tree_count": 16,
        "total_quartets_evaluated": 29120,
        "satisfied_quartet_score": 27482,
        "normalized_quartet_score": 0.9438,
        "mean_local_posterior_pp1": 0.9899,
        "mean_branch_length_cu": 1.9632,
        "wall_clock_ms": 5.1817,
        "species_tree_newick": "(Ursus_americanus_NC_003426,(Ursus_americanus_JX196366,(Ursus_thibetanus_NC_009971,(((Ursus_maritimus_NC_003428,Ursus_maritimus_GU573490)1.0000:2.4567,(Ursus_arctos_AP012578,Ursus_arctos_NC_003427)1.0000:2.3671)1.0000:2.4567,((Meles_anakuma_NC_009677,Mustela_putorius_NC_020638)0.9940:0.7577,((Vulpes_vulpes_NC_008434,(Canis_lupus_NC_008092,Canis_lupus_familiaris_NC_002008)1.0000:2.4567)1.0000:2.6184,(Felis_catus_NC_001700,(Panthera_pardus_NC_010641,(Panthera_tigris_NC_010642,Panthera_tigris_EF551003)1.0000:2.4567)0.9999:1.2685)1.0000:2.4567)0.9989:0.9808)1.0000:2.4567)0.8764:0.4212)1.0000:2.3671):0.0000);",
        "focal_branches": [
          {
            "branch_id": "BR-01",
            "clade_label": "Ursus_maritimus_NC_003428 + Ursus_maritimus_GU573490",
            "subset_size": 2,
            "total_taxa": 16,
            "q1_main_freq": 1.0,
            "q2_alt1_freq": 0.0,
            "q3_alt2_freq": 0.0,
            "f1_quartet_weight": 16.0,
            "f2_quartet_weight": 0.0,
            "f3_quartet_weight": 0.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 100.0,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.4567,
            "discordance_asymmetry_chisq": 0.0,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-02",
            "clade_label": "Ursus_arctos_AP012578 + Ursus_arctos_NC_003427",
            "subset_size": 2,
            "total_taxa": 16,
            "q1_main_freq": 0.9375,
            "q2_alt1_freq": 0.0625,
            "q3_alt2_freq": 0.0,
            "f1_quartet_weight": 15.0,
            "f2_quartet_weight": 1.0,
            "f3_quartet_weight": 0.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 93.75,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.3671,
            "discordance_asymmetry_chisq": 0.0,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-03",
            "clade_label": "Ursus_maritimus_NC_003428 + Ursus_maritimus_GU573490 + Ursus_arctos_AP012578 + Ursus_arctos_NC_003427",
            "subset_size": 4,
            "total_taxa": 16,
            "q1_main_freq": 1.0,
            "q2_alt1_freq": 0.0,
            "q3_alt2_freq": 0.0,
            "f1_quartet_weight": 16.0,
            "f2_quartet_weight": 0.0,
            "f3_quartet_weight": 0.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 100.0,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.4567,
            "discordance_asymmetry_chisq": 0.0,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-04",
            "clade_label": "Meles_anakuma_NC_009677 + Mustela_putorius_NC_020638",
            "subset_size": 2,
            "total_taxa": 16,
            "q1_main_freq": 0.6875,
            "q2_alt1_freq": 0.1875,
            "q3_alt2_freq": 0.125,
            "f1_quartet_weight": 11.0,
            "f2_quartet_weight": 3.0,
            "f3_quartet_weight": 2.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 68.75,
            "local_posterior_pp1": 0.994,
            "branch_length_cu": 0.7577,
            "discordance_asymmetry_chisq": 0.2,
            "coalescent_regime": "Moderate Incomplete Lineage Sorting (0.20–1.00 CU)"
          },
          {
            "branch_id": "BR-05",
            "clade_label": "Canis_lupus_NC_008092 + Canis_lupus_familiaris_NC_002008",
            "subset_size": 2,
            "total_taxa": 16,
            "q1_main_freq": 1.0,
            "q2_alt1_freq": 0.0,
            "q3_alt2_freq": 0.0,
            "f1_quartet_weight": 16.0,
            "f2_quartet_weight": 0.0,
            "f3_quartet_weight": 0.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 100.0,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.4567,
            "discordance_asymmetry_chisq": 0.0,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-06",
            "clade_label": "Vulpes_vulpes_NC_008434 + Canis_lupus_NC_008092 + Canis_lupus_familiaris_NC_002008",
            "subset_size": 3,
            "total_taxa": 16,
            "q1_main_freq": 0.9514,
            "q2_alt1_freq": 0.0486,
            "q3_alt2_freq": 0.0,
            "f1_quartet_weight": 15.2222,
            "f2_quartet_weight": 0.7778,
            "f3_quartet_weight": 0.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 93.75,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.6184,
            "discordance_asymmetry_chisq": 0.0,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-07",
            "clade_label": "Panthera_tigris_NC_010642 + Panthera_tigris_EF551003",
            "subset_size": 2,
            "total_taxa": 16,
            "q1_main_freq": 1.0,
            "q2_alt1_freq": 0.0,
            "q3_alt2_freq": 0.0,
            "f1_quartet_weight": 16.0,
            "f2_quartet_weight": 0.0,
            "f3_quartet_weight": 0.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 100.0,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.4567,
            "discordance_asymmetry_chisq": 0.0,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-08",
            "clade_label": "Panthera_pardus_NC_010641 + Panthera_tigris_NC_010642 + Panthera_tigris_EF551003",
            "subset_size": 3,
            "total_taxa": 16,
            "q1_main_freq": 0.8125,
            "q2_alt1_freq": 0.0,
            "q3_alt2_freq": 0.1875,
            "f1_quartet_weight": 13.0,
            "f2_quartet_weight": 0.0,
            "f3_quartet_weight": 3.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 81.25,
            "local_posterior_pp1": 0.9999,
            "branch_length_cu": 1.2685,
            "discordance_asymmetry_chisq": 3.0,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-09",
            "clade_label": "Felis_catus_NC_001700 + Panthera_pardus_NC_010641 + Panthera_tigris_NC_010642 + Panthera_tigris_EF551003",
            "subset_size": 4,
            "total_taxa": 16,
            "q1_main_freq": 1.0,
            "q2_alt1_freq": 0.0,
            "q3_alt2_freq": 0.0,
            "f1_quartet_weight": 16.0,
            "f2_quartet_weight": 0.0,
            "f3_quartet_weight": 0.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 100.0,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.4567,
            "discordance_asymmetry_chisq": 0.0,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-10",
            "clade_label": "Vulpes_vulpes_NC_008434 + Canis_lupus_NC_008092 (+5 taxa)",
            "subset_size": 7,
            "total_taxa": 16,
            "q1_main_freq": 0.75,
            "q2_alt1_freq": 0.0938,
            "q3_alt2_freq": 0.1563,
            "f1_quartet_weight": 12.0,
            "f2_quartet_weight": 1.5,
            "f3_quartet_weight": 2.5,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 68.75,
            "local_posterior_pp1": 0.9989,
            "branch_length_cu": 0.9808,
            "discordance_asymmetry_chisq": 0.25,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-11",
            "clade_label": "Meles_anakuma_NC_009677 + Mustela_putorius_NC_020638 (+7 taxa)",
            "subset_size": 9,
            "total_taxa": 16,
            "q1_main_freq": 1.0,
            "q2_alt1_freq": 0.0,
            "q3_alt2_freq": 0.0,
            "f1_quartet_weight": 16.0,
            "f2_quartet_weight": 0.0,
            "f3_quartet_weight": 0.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 100.0,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.4567,
            "discordance_asymmetry_chisq": 0.0,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-12",
            "clade_label": "Meles_anakuma_NC_009677 + Mustela_putorius_NC_020638 (+11 taxa)",
            "subset_size": 13,
            "total_taxa": 16,
            "q1_main_freq": 0.5625,
            "q2_alt1_freq": 0.0625,
            "q3_alt2_freq": 0.375,
            "f1_quartet_weight": 9.0,
            "f2_quartet_weight": 1.0,
            "f3_quartet_weight": 6.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 56.25,
            "local_posterior_pp1": 0.8764,
            "branch_length_cu": 0.4212,
            "discordance_asymmetry_chisq": 3.5714,
            "coalescent_regime": "Moderate Incomplete Lineage Sorting (0.20–1.00 CU)"
          },
          {
            "branch_id": "BR-13",
            "clade_label": "Ursus_thibetanus_NC_009971 + Meles_anakuma_NC_009677 (+12 taxa)",
            "subset_size": 14,
            "total_taxa": 16,
            "q1_main_freq": 0.9375,
            "q2_alt1_freq": 0.0,
            "q3_alt2_freq": 0.0625,
            "f1_quartet_weight": 15.0,
            "f2_quartet_weight": 0.0,
            "f3_quartet_weight": 1.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 93.75,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.3671,
            "discordance_asymmetry_chisq": 0.0,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          }
        ]
      },
      "astral_result": {
        "engine_name": "ASTRAL v5.7.8 (Mirarab et al. — Exact Quartet DP + Polytree Weighting)",
        "engine_mode": "CoalescentMode::Astral",
        "taxa_count": 16,
        "gene_tree_count": 16,
        "total_quartets_evaluated": 29120,
        "satisfied_quartet_score": 27482,
        "normalized_quartet_score": 0.9438,
        "mean_local_posterior_pp1": 0.9892,
        "mean_branch_length_cu": 1.7486,
        "wall_clock_ms": 195.4886,
        "species_tree_newick": "(Ursus_americanus_NC_003426,(Ursus_americanus_JX196366,(Ursus_thibetanus_NC_009971,(((Ursus_maritimus_NC_003428,Ursus_maritimus_GU573490)'[q1=1.0;q2=0.0;q3=0.0;f1=16.0;f2=0.0;f3=0.0;pp1=0.9999999690259033;pp2=1.5487048390506465E-8;pp3=1.5487048390506465E-8;QC=24;EN=16.0]':2.4277482359480516,(Ursus_arctos_AP012578,Ursus_arctos_NC_003427)'[q1=0.9375;q2=0.0;q3=0.0625;f1=15.0;f2=0.0;f3=1.0;pp1=0.999998915907469;pp2=4.955851570634903E-7;pp3=5.885073740128846E-7;QC=24;EN=16.0]':1.7346010553881062)'[q1=1.0;q2=0.0;q3=0.0;f1=16.0;f2=0.0;f3=0.0;pp1=0.9999999690259033;pp2=1.5487048390506465E-8;pp3=1.5487048390506465E-8;QC=108;EN=16.0]':2.4277482359480516,(((Vulpes_vulpes_NC_008434,(Canis_lupus_NC_008092,Canis_lupus_familiaris_NC_002008)'[q1=1.0;q2=0.0;q3=0.0;f1=16.0;f2=0.0;f3=0.0;pp1=0.9999999690259033;pp2=1.5487048390506465E-8;pp3=1.5487048390506465E-8;QC=13;EN=16.0]':2.4277482359480516)'[q1=0.9513888888888888;q2=0.0;q3=0.04861111111111111;f1=15.222222222222221;f2=0.0;f3=0.7777777777777778;pp1=0.999999466586478;pp2=2.491965709412942E-7;pp3=2.8421695120999703E-7;QC=72;EN=16.0]':1.852384091044489,(Felis_catus_NC_001700,(Panthera_pardus_NC_010641,(Panthera_tigris_NC_010642,Panthera_tigris_EF551003)'[q1=1.0;q2=0.0;q3=0.0;f1=16.0;f2=0.0;f3=0.0;pp1=0.9999999690259033;pp2=1.5487048390506465E-8;pp3=1.5487048390506465E-8;QC=13;EN=16.0]':2.4277482359480516)'[q1=0.8125;q2=0.1875;q3=0.0;f1=13.0;f2=3.0;f3=0.0;pp1=0.9998032820677484;pp2=1.2734636924104564E-4;pp3=6.937156301068789E-5;QC=24;EN=16.0]':1.0414538748281608)'[q1=1.0;q2=0.0;q3=0.0;f1=16.0;f2=0.0;f3=0.0;pp1=0.9999999690259033;pp2=1.5487048390506465E-8;pp3=1.5487048390506465E-8;QC=81;EN=16.0]':2.4277482359480516)'[q1=0.75;q2=0.15625;q3=0.09375;f1=12.0;f2=2.5;f3=1.5;pp1=0.9986798406690265;pp2=7.312820240383505E-4;pp3=5.888773069352726E-4;QC=168;EN=16.0]':0.8183103235139515,(Meles_anakuma_NC_009677,Mustela_putorius_NC_020638)'[q1=0.6875;q2=0.125;q3=0.1875;f1=11.0;f2=2.0;f3=3.0;pp1=0.9929244166784986;pp2=0.0031224856831842582;pp3=0.003953097638317006;QC=49;EN=16.0]':0.6359887667199969)'[q1=1.0;q2=0.0;q3=0.0;f1=16.0;f2=0.0;f3=0.0;pp1=0.9999999690259033;pp2=1.5487048390506465E-8;pp3=1.5487048390506465E-8;QC=168;EN=16.0]':2.4277482359480516)'[q1=0.5625;q2=0.375;q3=0.0625;f1=9.0;f2=6.0;f3=1.0;pp1=0.8685031296738083;pp2=0.10745192338083148;pp3=0.024044946945360034;QC=72;EN=16.0]':0.34830669426821587)'[q1=0.9375;q2=0.0625;q3=0.0;f1=15.0;f2=1.0;f3=0.0;pp1=0.999998915907469;pp2=5.885073740128846E-7;pp3=4.955851570634903E-7;QC=13;EN=16.0]':1.7346010553881062):0.0);",
        "focal_branches": [
          {
            "branch_id": "ASTRAL-BR-01",
            "clade_label": "Internal Branch 1",
            "subset_size": 2,
            "total_taxa": 16,
            "q1_main_freq": 1.0,
            "q2_alt1_freq": 0.0,
            "q3_alt2_freq": 0.0,
            "f1_quartet_weight": 16.0,
            "f2_quartet_weight": 0.0,
            "f3_quartet_weight": 0.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 100.0,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.4277,
            "discordance_asymmetry_chisq": 0.0,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-02",
            "clade_label": "Internal Branch 2",
            "subset_size": 2,
            "total_taxa": 16,
            "q1_main_freq": 0.9375,
            "q2_alt1_freq": 0.0,
            "q3_alt2_freq": 0.0625,
            "f1_quartet_weight": 15.0,
            "f2_quartet_weight": 0.0,
            "f3_quartet_weight": 1.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 93.75,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 1.7346,
            "discordance_asymmetry_chisq": 0.0,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-03",
            "clade_label": "Internal Branch 3",
            "subset_size": 2,
            "total_taxa": 16,
            "q1_main_freq": 1.0,
            "q2_alt1_freq": 0.0,
            "q3_alt2_freq": 0.0,
            "f1_quartet_weight": 16.0,
            "f2_quartet_weight": 0.0,
            "f3_quartet_weight": 0.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 100.0,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.4277,
            "discordance_asymmetry_chisq": 0.0,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-04",
            "clade_label": "Internal Branch 4",
            "subset_size": 2,
            "total_taxa": 16,
            "q1_main_freq": 1.0,
            "q2_alt1_freq": 0.0,
            "q3_alt2_freq": 0.0,
            "f1_quartet_weight": 16.0,
            "f2_quartet_weight": 0.0,
            "f3_quartet_weight": 0.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 100.0,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.4277,
            "discordance_asymmetry_chisq": 0.0,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-05",
            "clade_label": "Internal Branch 5",
            "subset_size": 2,
            "total_taxa": 16,
            "q1_main_freq": 0.9514,
            "q2_alt1_freq": 0.0,
            "q3_alt2_freq": 0.0486,
            "f1_quartet_weight": 15.2222,
            "f2_quartet_weight": 0.0,
            "f3_quartet_weight": 0.7778,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 95.1389,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 1.8524,
            "discordance_asymmetry_chisq": 0.0,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-06",
            "clade_label": "Internal Branch 6",
            "subset_size": 2,
            "total_taxa": 16,
            "q1_main_freq": 1.0,
            "q2_alt1_freq": 0.0,
            "q3_alt2_freq": 0.0,
            "f1_quartet_weight": 16.0,
            "f2_quartet_weight": 0.0,
            "f3_quartet_weight": 0.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 100.0,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.4277,
            "discordance_asymmetry_chisq": 0.0,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-07",
            "clade_label": "Internal Branch 7",
            "subset_size": 2,
            "total_taxa": 16,
            "q1_main_freq": 0.8125,
            "q2_alt1_freq": 0.1875,
            "q3_alt2_freq": 0.0,
            "f1_quartet_weight": 13.0,
            "f2_quartet_weight": 3.0,
            "f3_quartet_weight": 0.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 81.25,
            "local_posterior_pp1": 0.9998,
            "branch_length_cu": 1.0415,
            "discordance_asymmetry_chisq": 3.0,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-08",
            "clade_label": "Internal Branch 8",
            "subset_size": 2,
            "total_taxa": 16,
            "q1_main_freq": 1.0,
            "q2_alt1_freq": 0.0,
            "q3_alt2_freq": 0.0,
            "f1_quartet_weight": 16.0,
            "f2_quartet_weight": 0.0,
            "f3_quartet_weight": 0.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 100.0,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.4277,
            "discordance_asymmetry_chisq": 0.0,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-09",
            "clade_label": "Internal Branch 9",
            "subset_size": 2,
            "total_taxa": 16,
            "q1_main_freq": 0.75,
            "q2_alt1_freq": 0.1563,
            "q3_alt2_freq": 0.0938,
            "f1_quartet_weight": 12.0,
            "f2_quartet_weight": 2.5,
            "f3_quartet_weight": 1.5,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 75.0,
            "local_posterior_pp1": 0.9987,
            "branch_length_cu": 0.8183,
            "discordance_asymmetry_chisq": 0.25,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-10",
            "clade_label": "Internal Branch 10",
            "subset_size": 2,
            "total_taxa": 16,
            "q1_main_freq": 0.6875,
            "q2_alt1_freq": 0.125,
            "q3_alt2_freq": 0.1875,
            "f1_quartet_weight": 11.0,
            "f2_quartet_weight": 2.0,
            "f3_quartet_weight": 3.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 68.75,
            "local_posterior_pp1": 0.9929,
            "branch_length_cu": 0.636,
            "discordance_asymmetry_chisq": 0.2,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-11",
            "clade_label": "Internal Branch 11",
            "subset_size": 2,
            "total_taxa": 16,
            "q1_main_freq": 1.0,
            "q2_alt1_freq": 0.0,
            "q3_alt2_freq": 0.0,
            "f1_quartet_weight": 16.0,
            "f2_quartet_weight": 0.0,
            "f3_quartet_weight": 0.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 100.0,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.4277,
            "discordance_asymmetry_chisq": 0.0,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-12",
            "clade_label": "Internal Branch 12",
            "subset_size": 2,
            "total_taxa": 16,
            "q1_main_freq": 0.5625,
            "q2_alt1_freq": 0.375,
            "q3_alt2_freq": 0.0625,
            "f1_quartet_weight": 9.0,
            "f2_quartet_weight": 6.0,
            "f3_quartet_weight": 1.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 56.25,
            "local_posterior_pp1": 0.8685,
            "branch_length_cu": 0.3483,
            "discordance_asymmetry_chisq": 3.5714,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-13",
            "clade_label": "Internal Branch 13",
            "subset_size": 2,
            "total_taxa": 16,
            "q1_main_freq": 0.9375,
            "q2_alt1_freq": 0.0625,
            "q3_alt2_freq": 0.0,
            "f1_quartet_weight": 15.0,
            "f2_quartet_weight": 1.0,
            "f3_quartet_weight": 0.0,
            "effective_loci_en": 16.0,
            "gene_concordance_gcf_pct": 93.75,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 1.7346,
            "discordance_asymmetry_chisq": 0.0,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          }
        ]
      },
      "robinson_foulds_distance": 0,
      "max_robinson_foulds": 26,
      "topological_concordance_pct": 100.0,
      "quartet_score_ratio": 1.0,
      "normalized_quartet_delta": 0.0,
      "q1_pearson_r": 1.0,
      "branch_cu_pearson_r": 0.9525,
      "lpp_concordance_pct": 100.0,
      "native_speedup_factor": 37.7267,
      "abba_baba_tests": [
        {
          "quartet_id": "ABBA-01-URSIDAE",
          "p1_taxon": "Ursus americanus (NC_003426)",
          "p2_taxon": "Ursus arctos (NC_003427)",
          "p3_donor_taxon": "Ursus maritimus (NC_003428)",
          "outgroup_taxon": "Ursus thibetanus (NC_009971)",
          "bbaa_concordant_sites": 4,
          "abba_shared_p2_p3_sites": 70,
          "baba_shared_p1_p3_sites": 2,
          "patterson_d_stat": 0.9444,
          "z_score": 8.0139,
          "biological_interpretation": "Strong derived site sharing between Ursus arctos and Ursus maritimus relative to Ursus americanus (Ursus thibetanus outgroup), consistent with close sister-clade affinity and Pleistocene mitochondrial introgression across Holarctic bears."
        },
        {
          "quartet_id": "ABBA-02-FELIDAE",
          "p1_taxon": "Panthera tigris (NC_010642)",
          "p2_taxon": "Panthera pardus (NC_010641)",
          "p3_donor_taxon": "Felis catus (NC_001700)",
          "outgroup_taxon": "Meles anakuma (NC_009677)",
          "bbaa_concordant_sites": 36,
          "abba_shared_p2_p3_sites": 27,
          "baba_shared_p1_p3_sites": 24,
          "patterson_d_stat": 0.0588,
          "z_score": 0.4201,
          "biological_interpretation": "High BBAA concordance between Panthera tigris and Panthera pardus relative to Felis catus, with moderate ABBA/BABA site sharing reflecting rapid Plio-Pleistocene felid radiation and incomplete lineage sorting."
        },
        {
          "quartet_id": "ABBA-03-CANIDAE",
          "p1_taxon": "Canis lupus (NC_008092)",
          "p2_taxon": "Canis lupus familiaris (NC_002008)",
          "p3_donor_taxon": "Vulpes vulpes (NC_008434)",
          "outgroup_taxon": "Ursus arctos (NC_003427)",
          "bbaa_concordant_sites": 88,
          "abba_shared_p2_p3_sites": 0,
          "baba_shared_p1_p3_sites": 0,
          "patterson_d_stat": 0.0,
          "z_score": 0.0,
          "biological_interpretation": "High BBAA concordance and balanced ABBA/BABA counts confirm symmetric neutral sorting between Gray wolf (Canis lupus) and Domestic dog (Canis lupus familiaris) relative to Red fox (Vulpes vulpes)."
        }
      ],
      "ascii_cohort_comparison_table": "====================================================================================================================\nCOHORT: COHORT-01-CARNIVORA-16TAXA-NATIVE-CHAIN — 16-Taxon Carnivora Sub-Locus Window Coalescent Panel (16 ML Trees Built via 100% Native Upstream Stack)\nTaxa: 16 | Internal Splits: 13 | Input Gene Trees: 16 | Total Quartets Evaluated: 29120\nUpstream Provenance: 100% Native Upstream Stack: Native Gotoh Aligner v2 -> Native Felsenstein ModelTest (best model HKY+I) -> 16 Window ML Gene Trees via Native BIONJ+NNI (239.5 ms total upstream)\n--------------------------------------------------------------------------------------------------------------------\nMetric                                  Native Quartet MSC (Rust)          ASTRAL v5.7.8 (Java)        Concordance\n--------------------------------------------------------------------------------------------------------------------\nSatisfied Quartet Score Q(T)                                27482                         27482        Ratio = 1.000000\nNormalized Quartet Score                                 0.943800                      0.943800        Delta = +0.000000\nRobinson-Foulds Split Distance                                  0                             0        100.00% Match (RF=0/26)\nMean Local Posterior Prob (LPP)                            0.9899                        0.9892        r(q1) = 1.0000\nMean Coalescent Branch Length (CU)                         1.9632                        1.7486        r(CU) = 0.9525\nWall-Clock Execution Time (ms)                               5.18                        195.49        37.73x Speedup\n===================================================================================================================="
    },
    {
      "cohort_id": "COHORT-02-SONG-PRIMATES-14TAXA-424LOCI",
      "title": "14-Taxon Primate & Euarchontoglires 424-Nuclear-Gene Phylogenomic Benchmark (Song et al. 2012 PNAS)",
      "taxonomic_scope": "Euarchontoglires & Outgroups (Hominidae, Cercopithecidae, Platyrrhini, Strepsirrhini, Scandentia, Glires)",
      "upstream_pipeline_provenance": "Empirical 424 Mammalian Nuclear Ortholog ML Gene Trees (Song et al. 2012 PNAS; 424,424 Quartets)",
      "taxa_count": 14,
      "internal_branches_count": 11,
      "gene_tree_count": 424,
      "total_quartets_evaluated": 424424,
      "native_result": {
        "engine_name": "bio-suite Native Quartet MSC v1 (Exact Tripartition DP + Quartet NNI + LPP)",
        "engine_mode": "CoalescentMode::Native",
        "taxa_count": 14,
        "gene_tree_count": 424,
        "total_quartets_evaluated": 424424,
        "satisfied_quartet_score": 389734,
        "normalized_quartet_score": 0.9183,
        "mean_local_posterior_pp1": 0.9933,
        "mean_branch_length_cu": 1.963,
        "wall_clock_ms": 20.2736,
        "species_tree_newick": "(Marmoset,((Macaque,(Orangutan,(Gorilla,(Human,Chimpanzee)1.0000:0.6452)1.0000:2.3596)1.0000:2.6357)1.0000:2.7522,(Tarsier,((Galago,Mouse_Lemur)1.0000:2.4392,((Horse,Sloth)1.0000:2.6522,(Tree_Shrew,(Rat,Rabbit)1.0000:0.8080)0.9259:0.0869)1.0000:2.0089)1.0000:0.6597)1.0000:4.5457):0.0000);",
        "focal_branches": [
          {
            "branch_id": "BR-01",
            "clade_label": "Human + Chimpanzee",
            "subset_size": 2,
            "total_taxa": 14,
            "q1_main_freq": 0.6503,
            "q2_alt1_freq": 0.1844,
            "q3_alt2_freq": 0.1653,
            "f1_quartet_weight": 275.7273,
            "f2_quartet_weight": 78.1818,
            "f3_quartet_weight": 70.0909,
            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 63.6792,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 0.6452,
            "discordance_asymmetry_chisq": 0.4415,
            "coalescent_regime": "Moderate Incomplete Lineage Sorting (0.20–1.00 CU)"
          },
          {
            "branch_id": "BR-02",
            "clade_label": "Human + Chimpanzee + Gorilla",
            "subset_size": 3,
            "total_taxa": 14,
            "q1_main_freq": 0.937,
            "q2_alt1_freq": 0.0235,
            "q3_alt2_freq": 0.0395,
            "f1_quartet_weight": 397.3,
            "f2_quartet_weight": 9.95,
            "f3_quartet_weight": 16.75,
            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 91.2736,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.3596,
            "discordance_asymmetry_chisq": 1.7318,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-03",
            "clade_label": "Orangutan + Human + Chimpanzee + Gorilla",
            "subset_size": 4,
            "total_taxa": 14,
            "q1_main_freq": 0.9522,
            "q2_alt1_freq": 0.0253,
            "q3_alt2_freq": 0.0224,
            "f1_quartet_weight": 403.7407,
            "f2_quartet_weight": 10.7407,
            "f3_quartet_weight": 9.5185,
            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 93.6321,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.6357,
            "discordance_asymmetry_chisq": 0.0737,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-04",
            "clade_label": "Orangutan + Human (+3 taxa)",
            "subset_size": 5,
            "total_taxa": 14,
            "q1_main_freq": 0.9575,
            "q2_alt1_freq": 0.0274,
            "q3_alt2_freq": 0.0151,
            "f1_quartet_weight": 405.9688,
            "f2_quartet_weight": 11.625,
            "f3_quartet_weight": 6.4063,
            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 95.0472,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.7522,
            "discordance_asymmetry_chisq": 1.5105,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-05",
            "clade_label": "Galago + Mouse_Lemur",
            "subset_size": 2,
            "total_taxa": 14,
            "q1_main_freq": 0.9418,
            "q2_alt1_freq": 0.0352,
            "q3_alt2_freq": 0.0229,
            "f1_quartet_weight": 399.3429,
            "f2_quartet_weight": 14.9429,
            "f3_quartet_weight": 9.7143,
            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 92.4528,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.4392,
            "discordance_asymmetry_chisq": 1.1087,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-06",
            "clade_label": "Horse + Sloth",
            "subset_size": 2,
            "total_taxa": 14,
            "q1_main_freq": 0.953,
            "q2_alt1_freq": 0.0275,
            "q3_alt2_freq": 0.0195,
            "f1_quartet_weight": 404.0741,
            "f2_quartet_weight": 11.6667,
            "f3_quartet_weight": 8.2593,
            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 91.2736,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.6522,
            "discordance_asymmetry_chisq": 0.5827,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-07",
            "clade_label": "Rat + Rabbit",
            "subset_size": 2,
            "total_taxa": 14,
            "q1_main_freq": 0.7028,
            "q2_alt1_freq": 0.1389,
            "q3_alt2_freq": 0.1582,
            "f1_quartet_weight": 298.0,
            "f2_quartet_weight": 58.9091,
            "f3_quartet_weight": 67.0909,
            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 63.9151,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 0.808,
            "discordance_asymmetry_chisq": 0.5313,
            "coalescent_regime": "Moderate Incomplete Lineage Sorting (0.20–1.00 CU)"
          },
          {
            "branch_id": "BR-08",
            "clade_label": "Tree_Shrew + Rat + Rabbit",
            "subset_size": 3,
            "total_taxa": 14,
            "q1_main_freq": 0.3888,
            "q2_alt1_freq": 0.2556,
            "q3_alt2_freq": 0.3555,
            "f1_quartet_weight": 164.8611,
            "f2_quartet_weight": 108.3889,
            "f3_quartet_weight": 150.75,
            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 32.0755,
            "local_posterior_pp1": 0.9259,
            "branch_length_cu": 0.0869,
            "discordance_asymmetry_chisq": 6.9247,
            "coalescent_regime": "Asymmetric Discordance (Candidate Introgression)"
          },
          {
            "branch_id": "BR-09",
            "clade_label": "Tree_Shrew + Rat (+3 taxa)",
            "subset_size": 5,
            "total_taxa": 14,
            "q1_main_freq": 0.9106,
            "q2_alt1_freq": 0.038,
            "q3_alt2_freq": 0.0514,
            "f1_quartet_weight": 386.0833,
            "f2_quartet_weight": 16.119,
            "f3_quartet_weight": 21.7976,
            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 78.7736,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.0089,
            "discordance_asymmetry_chisq": 0.8504,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-10",
            "clade_label": "Galago + Mouse_Lemur (+5 taxa)",
            "subset_size": 7,
            "total_taxa": 14,
            "q1_main_freq": 0.6553,
            "q2_alt1_freq": 0.1703,
            "q3_alt2_freq": 0.1744,
            "f1_quartet_weight": 277.8667,
            "f2_quartet_weight": 72.2,
            "f3_quartet_weight": 73.9333,
            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 62.5,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 0.6597,
            "discordance_asymmetry_chisq": 0.0206,
            "coalescent_regime": "Moderate Incomplete Lineage Sorting (0.20–1.00 CU)"
          },
          {
            "branch_id": "BR-11",
            "clade_label": "Galago + Mouse_Lemur (+6 taxa)",
            "subset_size": 8,
            "total_taxa": 14,
            "q1_main_freq": 0.9929,
            "q2_alt1_freq": 0.0027,
            "q3_alt2_freq": 0.0044,
            "f1_quartet_weight": 421.0,
            "f2_quartet_weight": 1.1429,
            "f3_quartet_weight": 1.8571,
            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 98.5849,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 4.5457,
            "discordance_asymmetry_chisq": 0.1701,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          }
        ]
      },
      "astral_result": {
        "engine_name": "ASTRAL v5.7.8 (Mirarab et al. — Exact Quartet DP + Polytree Weighting)",
        "engine_mode": "CoalescentMode::Astral",
        "taxa_count": 14,
        "gene_tree_count": 424,
        "total_quartets_evaluated": 424424,
        "satisfied_quartet_score": 389734,
        "normalized_quartet_score": 0.9183,
        "mean_local_posterior_pp1": 0.9932,
        "mean_branch_length_cu": 1.9138,
        "wall_clock_ms": 482.8271,
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            "branch_id": "ASTRAL-BR-11",
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            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
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        ]
      },
      "robinson_foulds_distance": 0,
      "max_robinson_foulds": 22,
      "topological_concordance_pct": 100.0,
      "quartet_score_ratio": 1.0,
      "normalized_quartet_delta": 0.0,
      "q1_pearson_r": 1.0,
      "branch_cu_pearson_r": 0.9993,
      "lpp_concordance_pct": 100.0,
      "native_speedup_factor": 23.8156,
      "abba_baba_tests": [],
      "ascii_cohort_comparison_table": "====================================================================================================================\nCOHORT: COHORT-02-SONG-PRIMATES-14TAXA-424LOCI — 14-Taxon Primate & Euarchontoglires 424-Nuclear-Gene Phylogenomic Benchmark (Song et al. 2012 PNAS)\nTaxa: 14 | Internal Splits: 11 | Input Gene Trees: 424 | Total Quartets Evaluated: 424424\nUpstream Provenance: Empirical 424 Mammalian Nuclear Ortholog ML Gene Trees (Song et al. 2012 PNAS; 424,424 Quartets)\n--------------------------------------------------------------------------------------------------------------------\nMetric                                  Native Quartet MSC (Rust)          ASTRAL v5.7.8 (Java)        Concordance\n--------------------------------------------------------------------------------------------------------------------\nSatisfied Quartet Score Q(T)                               389734                        389734        Ratio = 1.000000\nNormalized Quartet Score                                 0.918300                      0.918300        Delta = +0.000000\nRobinson-Foulds Split Distance                                  0                             0        100.00% Match (RF=0/22)\nMean Local Posterior Prob (LPP)                            0.9933                        0.9932        r(q1) = 1.0000\nMean Coalescent Branch Length (CU)                         1.9630                        1.9138        r(CU) = 0.9993\nWall-Clock Execution Time (ms)                              20.27                        482.83        23.82x Speedup\n===================================================================================================================="
    },
    {
      "cohort_id": "COHORT-03-SONG-MAMMALS-37TAXA-424LOCI",
      "title": "37-Taxon Amniote & Placental Mammal Radiation 424-Nuclear-Gene Benchmark (28,003,080 Quartets)",
      "taxonomic_scope": "Class Mammalia & Outgroups (Atlantogenata, Laurasiatheria, Scrotifera, Chiroptera, Euarchontoglires, Marsupialia, Monotremata)",
      "upstream_pipeline_provenance": "Empirical 424 Nuclear Coding Ortholog ML Gene Trees Across 37 Vertebrate Genomes (28,003,080 Quartets)",
      "taxa_count": 37,
      "internal_branches_count": 34,
      "gene_tree_count": 424,
      "total_quartets_evaluated": 28003080,
      "native_result": {
        "engine_name": "bio-suite Native Quartet MSC v1 (Exact Tripartition DP + Quartet NNI + LPP)",
        "engine_mode": "CoalescentMode::Native",
        "taxa_count": 37,
        "gene_tree_count": 424,
        "total_quartets_evaluated": 28003080,
        "satisfied_quartet_score": 25526915,
        "normalized_quartet_score": 0.9116,
        "mean_local_posterior_pp1": 0.9944,
        "mean_branch_length_cu": 2.0103,
        "wall_clock_ms": 333.5833,
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        "focal_branches": [
          {
            "branch_id": "BR-01",
            "clade_label": "Opossum + Wallaby",
            "subset_size": 2,
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            "q2_alt1_freq": 0.0024,
            "q3_alt2_freq": 0.0,
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          },
          {
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          },
          {
            "branch_id": "BR-03",
            "clade_label": "Hyrax + Elephant",
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            "total_taxa": 37,
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            "local_posterior_pp1": 1.0,
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            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-04",
            "clade_label": "Lesser_Hedgehog_Tenrec + Hyrax + Elephant",
            "subset_size": 3,
            "total_taxa": 37,
            "q1_main_freq": 0.9702,
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            "q3_alt2_freq": 0.0248,
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            "local_posterior_pp1": 1.0,
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            "discordance_asymmetry_chisq": 5.5007,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-05",
            "clade_label": "Lesser_Hedgehog_Tenrec + Hyrax (+3 taxa)",
            "subset_size": 5,
            "total_taxa": 37,
            "q1_main_freq": 0.4082,
            "q2_alt1_freq": 0.3107,
            "q3_alt2_freq": 0.2811,
            "f1_quartet_weight": 173.0833,
            "f2_quartet_weight": 131.7351,
            "f3_quartet_weight": 119.1815,
            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 37.5,
            "local_posterior_pp1": 0.9978,
            "branch_length_cu": 0.1191,
            "discordance_asymmetry_chisq": 0.6281,
            "coalescent_regime": "Severe ILS / Rapid Radiation Zone (< 0.20 CU)"
          },
          {
            "branch_id": "BR-06",
            "clade_label": "Shrew + Hedgehog",
            "subset_size": 2,
            "total_taxa": 37,
            "q1_main_freq": 0.7597,
            "q2_alt1_freq": 0.1258,
            "q3_alt2_freq": 0.1146,
            "f1_quartet_weight": 322.094,
            "f2_quartet_weight": 53.3248,
            "f3_quartet_weight": 48.5812,
            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 69.1038,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 1.0202,
            "discordance_asymmetry_chisq": 0.2208,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-07",
            "clade_label": "Microbat + Megabat",
            "subset_size": 2,
            "total_taxa": 37,
            "q1_main_freq": 0.8609,
            "q2_alt1_freq": 0.0814,
            "q3_alt2_freq": 0.0577,
            "f1_quartet_weight": 365.0408,
            "f2_quartet_weight": 34.4949,
            "f3_quartet_weight": 24.4643,
            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 78.7736,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 1.5674,
            "discordance_asymmetry_chisq": 1.7065,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-08",
            "clade_label": "Dog + Cat",
            "subset_size": 2,
            "total_taxa": 37,
            "q1_main_freq": 0.9658,
            "q2_alt1_freq": 0.0177,
            "q3_alt2_freq": 0.0165,
            "f1_quartet_weight": 409.5,
            "f2_quartet_weight": 7.5,
            "f3_quartet_weight": 7.0,
            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 95.0472,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.9701,
            "discordance_asymmetry_chisq": 0.0172,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-09",
            "clade_label": "Horse + Dog + Cat",
            "subset_size": 3,
            "total_taxa": 37,
            "q1_main_freq": 0.3756,
            "q2_alt1_freq": 0.3072,
            "q3_alt2_freq": 0.3172,
            "f1_quartet_weight": 159.2625,
            "f2_quartet_weight": 130.25,
            "f3_quartet_weight": 134.4875,
            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 19.5755,
            "local_posterior_pp1": 0.9065,
            "branch_length_cu": 0.0655,
            "discordance_asymmetry_chisq": 0.0678,
            "coalescent_regime": "Severe ILS / Rapid Radiation Zone (< 0.20 CU)"
          },
          {
            "branch_id": "BR-10",
            "clade_label": "Dolphin + Cow",
            "subset_size": 2,
            "total_taxa": 37,
            "q1_main_freq": 0.83,
            "q2_alt1_freq": 0.0553,
            "q3_alt2_freq": 0.1147,
            "f1_quartet_weight": 351.9118,
            "f2_quartet_weight": 23.4412,
            "f3_quartet_weight": 48.6471,
            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 80.1887,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 1.3664,
            "discordance_asymmetry_chisq": 8.8133,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-11",
            "clade_label": "Dolphin + Cow + Pig",
            "subset_size": 3,
            "total_taxa": 37,
            "q1_main_freq": 0.6497,
            "q2_alt1_freq": 0.1854,
            "q3_alt2_freq": 0.1649,
            "f1_quartet_weight": 275.4848,
            "f2_quartet_weight": 78.5909,
            "f3_quartet_weight": 69.9242,
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            "gene_concordance_gcf_pct": 62.2642,
            "local_posterior_pp1": 1.0,
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            "discordance_asymmetry_chisq": 0.5057,
            "coalescent_regime": "Moderate Incomplete Lineage Sorting (0.20–1.00 CU)"
          },
          {
            "branch_id": "BR-12",
            "clade_label": "Dolphin + Cow + Alpaca + Pig",
            "subset_size": 4,
            "total_taxa": 37,
            "q1_main_freq": 0.9836,
            "q2_alt1_freq": 0.0079,
            "q3_alt2_freq": 0.0085,
            "f1_quartet_weight": 417.0444,
            "f2_quartet_weight": 3.3333,
            "f3_quartet_weight": 3.6222,
            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 90.8019,
            "local_posterior_pp1": 1.0,
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            "discordance_asymmetry_chisq": 0.012,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-13",
            "clade_label": "Horse + Dolphin (+5 taxa)",
            "subset_size": 7,
            "total_taxa": 37,
            "q1_main_freq": 0.4068,
            "q2_alt1_freq": 0.28,
            "q3_alt2_freq": 0.3131,
            "f1_quartet_weight": 172.5015,
            "f2_quartet_weight": 118.7307,
            "f3_quartet_weight": 132.7679,
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            "gene_concordance_gcf_pct": 13.9151,
            "local_posterior_pp1": 0.9973,
            "branch_length_cu": 0.1168,
            "discordance_asymmetry_chisq": 0.7835,
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          },
          {
            "branch_id": "BR-14",
            "clade_label": "Microbat + Megabat (+7 taxa)",
            "subset_size": 9,
            "total_taxa": 37,
            "q1_main_freq": 0.568,
            "q2_alt1_freq": 0.2007,
            "q3_alt2_freq": 0.2312,
            "f1_quartet_weight": 240.8434,
            "f2_quartet_weight": 85.1126,
            "f3_quartet_weight": 98.044,
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            "gene_concordance_gcf_pct": 37.0283,
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            "discordance_asymmetry_chisq": 0.913,
            "coalescent_regime": "Moderate Incomplete Lineage Sorting (0.20–1.00 CU)"
          },
          {
            "branch_id": "BR-15",
            "clade_label": "Microbat + Megabat (+9 taxa)",
            "subset_size": 11,
            "total_taxa": 37,
            "q1_main_freq": 0.9093,
            "q2_alt1_freq": 0.0482,
            "q3_alt2_freq": 0.0425,
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            "gene_concordance_gcf_pct": 80.4245,
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            "discordance_asymmetry_chisq": 0.1507,
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          },
          {
            "branch_id": "BR-16",
            "clade_label": "Rabbit + Pika",
            "subset_size": 2,
            "total_taxa": 37,
            "q1_main_freq": 0.9811,
            "q2_alt1_freq": 0.0025,
            "q3_alt2_freq": 0.0164,
            "f1_quartet_weight": 416.0,
            "f2_quartet_weight": 1.0667,
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            "gene_concordance_gcf_pct": 96.4623,
            "local_posterior_pp1": 1.0,
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            "discordance_asymmetry_chisq": 4.3022,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-17",
            "clade_label": "Mouse + Rat",
            "subset_size": 2,
            "total_taxa": 37,
            "q1_main_freq": 0.9981,
            "q2_alt1_freq": 0.0001,
            "q3_alt2_freq": 0.0019,
            "f1_quartet_weight": 423.1765,
            "f2_quartet_weight": 0.0294,
            "f3_quartet_weight": 0.7941,
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            "gene_concordance_gcf_pct": 99.7642,
            "local_posterior_pp1": 1.0,
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            "discordance_asymmetry_chisq": 0.0,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-18",
            "clade_label": "Mouse + Rat + Kangaroo_Rat",
            "subset_size": 3,
            "total_taxa": 37,
            "q1_main_freq": 0.6412,
            "q2_alt1_freq": 0.1478,
            "q3_alt2_freq": 0.211,
            "f1_quartet_weight": 271.8788,
            "f2_quartet_weight": 62.6515,
            "f3_quartet_weight": 89.4697,
            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 59.434,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 0.6196,
            "discordance_asymmetry_chisq": 4.7279,
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          },
          {
            "branch_id": "BR-19",
            "clade_label": "Mouse + Rat + Kangaroo_Rat + Guinea_Pig",
            "subset_size": 4,
            "total_taxa": 37,
            "q1_main_freq": 0.4267,
            "q2_alt1_freq": 0.2941,
            "q3_alt2_freq": 0.2792,
            "f1_quartet_weight": 180.9271,
            "f2_quartet_weight": 124.7083,
            "f3_quartet_weight": 118.3646,
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            "gene_concordance_gcf_pct": 28.5377,
            "local_posterior_pp1": 0.9999,
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            "discordance_asymmetry_chisq": 0.1656,
            "coalescent_regime": "Severe ILS / Rapid Radiation Zone (< 0.20 CU)"
          },
          {
            "branch_id": "BR-20",
            "clade_label": "Mouse + Rat (+3 taxa)",
            "subset_size": 5,
            "total_taxa": 37,
            "q1_main_freq": 0.8751,
            "q2_alt1_freq": 0.0468,
            "q3_alt2_freq": 0.0781,
            "f1_quartet_weight": 371.0375,
            "f2_quartet_weight": 19.8333,
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            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 76.4151,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 1.6747,
            "discordance_asymmetry_chisq": 3.3378,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-21",
            "clade_label": "Mouse + Rat (+5 taxa)",
            "subset_size": 7,
            "total_taxa": 37,
            "q1_main_freq": 0.7148,
            "q2_alt1_freq": 0.1619,
            "q3_alt2_freq": 0.1233,
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            "gene_concordance_gcf_pct": 59.1981,
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          },
          {
            "branch_id": "BR-22",
            "clade_label": "Tree_Shrew + Mouse (+6 taxa)",
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            "total_taxa": 37,
            "q1_main_freq": 0.3893,
            "q2_alt1_freq": 0.3604,
            "q3_alt2_freq": 0.2503,
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            "gene_concordance_gcf_pct": 28.5377,
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          },
          {
            "branch_id": "BR-23",
            "clade_label": "Galagos + Mouse_Lemur",
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            "q3_alt2_freq": 0.0329,
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          },
          {
            "branch_id": "BR-24",
            "clade_label": "Human + Chimpanzee",
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            "q3_alt2_freq": 0.1647,
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          },
          {
            "branch_id": "BR-25",
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            "total_taxa": 37,
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            "q3_alt2_freq": 0.0396,
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            "discordance_asymmetry_chisq": 1.9542,
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          },
          {
            "branch_id": "BR-26",
            "clade_label": "Orangutan + Human + Chimpanzee + Gorilla",
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            "total_taxa": 37,
            "q1_main_freq": 0.9518,
            "q2_alt1_freq": 0.0256,
            "q3_alt2_freq": 0.0227,
            "f1_quartet_weight": 403.5521,
            "f2_quartet_weight": 10.8438,
            "f3_quartet_weight": 9.6042,
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            "gene_concordance_gcf_pct": 93.6321,
            "local_posterior_pp1": 1.0,
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            "discordance_asymmetry_chisq": 0.0751,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-27",
            "clade_label": "Orangutan + Human (+3 taxa)",
            "subset_size": 5,
            "total_taxa": 37,
            "q1_main_freq": 0.9569,
            "q2_alt1_freq": 0.0157,
            "q3_alt2_freq": 0.0274,
            "f1_quartet_weight": 405.7258,
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            "gene_concordance_gcf_pct": 95.0472,
            "local_posterior_pp1": 1.0,
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            "discordance_asymmetry_chisq": 1.3243,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-28",
            "clade_label": "Marmoset + Orangutan (+4 taxa)",
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            "total_taxa": 37,
            "q1_main_freq": 0.9937,
            "q2_alt1_freq": 0.004,
            "q3_alt2_freq": 0.0023,
            "f1_quartet_weight": 421.3333,
            "f2_quartet_weight": 1.7,
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            "gene_concordance_gcf_pct": 98.5849,
            "local_posterior_pp1": 1.0,
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            "discordance_asymmetry_chisq": 0.2017,
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          },
          {
            "branch_id": "BR-29",
            "clade_label": "Marmoset + Orangutan (+5 taxa)",
            "subset_size": 7,
            "total_taxa": 37,
            "q1_main_freq": 0.6539,
            "q2_alt1_freq": 0.1706,
            "q3_alt2_freq": 0.1755,
            "f1_quartet_weight": 277.2619,
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            "gene_concordance_gcf_pct": 62.2642,
            "local_posterior_pp1": 1.0,
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          },
          {
            "branch_id": "BR-30",
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            "subset_size": 9,
            "total_taxa": 37,
            "q1_main_freq": 0.9223,
            "q2_alt1_freq": 0.0429,
            "q3_alt2_freq": 0.0349,
            "f1_quartet_weight": 391.0478,
            "f2_quartet_weight": 18.1746,
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            "gene_concordance_gcf_pct": 78.5377,
            "local_posterior_pp1": 1.0,
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            "discordance_asymmetry_chisq": 0.3502,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-31",
            "clade_label": "Marmoset + Orangutan (+15 taxa)",
            "subset_size": 17,
            "total_taxa": 37,
            "q1_main_freq": 0.9378,
            "q2_alt1_freq": 0.0331,
            "q3_alt2_freq": 0.0292,
            "f1_quartet_weight": 397.608,
            "f2_quartet_weight": 14.0314,
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            "effective_loci_en": 424.0,
            "gene_concordance_gcf_pct": 80.8962,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 2.3712,
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            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-32",
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            "subset_size": 28,
            "total_taxa": 37,
            "q1_main_freq": 0.8624,
            "q2_alt1_freq": 0.0813,
            "q3_alt2_freq": 0.0563,
            "f1_quartet_weight": 365.6484,
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            "gene_concordance_gcf_pct": 81.1321,
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            "discordance_asymmetry_chisq": 1.9179,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-33",
            "clade_label": "Marmoset + Orangutan (+31 taxa)",
            "subset_size": 33,
            "total_taxa": 37,
            "q1_main_freq": 0.979,
            "q2_alt1_freq": 0.0144,
            "q3_alt2_freq": 0.0066,
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            "gene_concordance_gcf_pct": 95.5189,
            "local_posterior_pp1": 1.0,
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            "discordance_asymmetry_chisq": 1.232,
            "coalescent_regime": "High-Concordance Coalescent Split (> 1.00 CU)"
          },
          {
            "branch_id": "BR-34",
            "clade_label": "Marmoset + Orangutan (+33 taxa)",
            "subset_size": 35,
            "total_taxa": 37,
            "q1_main_freq": 0.7377,
            "q2_alt1_freq": 0.1228,
            "q3_alt2_freq": 0.1395,
            "f1_quartet_weight": 312.7879,
            "f2_quartet_weight": 52.0606,
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            "gene_concordance_gcf_pct": 73.3491,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 0.9328,
            "discordance_asymmetry_chisq": 0.4521,
            "coalescent_regime": "Moderate Incomplete Lineage Sorting (0.20–1.00 CU)"
          }
        ]
      },
      "astral_result": {
        "engine_name": "ASTRAL v5.7.8 (Mirarab et al. — Exact Quartet DP + Polytree Weighting)",
        "engine_mode": "CoalescentMode::Astral",
        "taxa_count": 37,
        "gene_tree_count": 424,
        "total_quartets_evaluated": 28003080,
        "satisfied_quartet_score": 25526915,
        "normalized_quartet_score": 0.9116,
        "mean_local_posterior_pp1": 0.9943,
        "mean_branch_length_cu": 1.9229,
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            "branch_id": "ASTRAL-BR-22",
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          {
            "branch_id": "ASTRAL-BR-26",
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          {
            "branch_id": "ASTRAL-BR-27",
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            "gene_concordance_gcf_pct": 97.9018,
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          },
          {
            "branch_id": "ASTRAL-BR-34",
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            "gene_concordance_gcf_pct": 73.7707,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 0.9262,
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            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          }
        ]
      },
      "robinson_foulds_distance": 0,
      "max_robinson_foulds": 68,
      "topological_concordance_pct": 100.0,
      "quartet_score_ratio": 1.0,
      "normalized_quartet_delta": 0.0,
      "q1_pearson_r": 1.0,
      "branch_cu_pearson_r": 0.9974,
      "lpp_concordance_pct": 100.0,
      "native_speedup_factor": 3.4928,
      "abba_baba_tests": [],
      "ascii_cohort_comparison_table": "====================================================================================================================\nCOHORT: COHORT-03-SONG-MAMMALS-37TAXA-424LOCI — 37-Taxon Amniote & Placental Mammal Radiation 424-Nuclear-Gene Benchmark (28,003,080 Quartets)\nTaxa: 37 | Internal Splits: 34 | Input Gene Trees: 424 | Total Quartets Evaluated: 28003080\nUpstream Provenance: Empirical 424 Nuclear Coding Ortholog ML Gene Trees Across 37 Vertebrate Genomes (28,003,080 Quartets)\n--------------------------------------------------------------------------------------------------------------------\nMetric                                  Native Quartet MSC (Rust)          ASTRAL v5.7.8 (Java)        Concordance\n--------------------------------------------------------------------------------------------------------------------\nSatisfied Quartet Score Q(T)                             25526915                      25526915        Ratio = 1.000000\nNormalized Quartet Score                                 0.911600                      0.911600        Delta = +0.000000\nRobinson-Foulds Split Distance                                  0                             0        100.00% Match (RF=0/68)\nMean Local Posterior Prob (LPP)                            0.9944                        0.9943        r(q1) = 1.0000\nMean Coalescent Branch Length (CU)                         2.0103                        1.9229        r(CU) = 0.9974\nWall-Clock Execution Time (ms)                             333.58                       1165.15        3.49x Speedup\n===================================================================================================================="
    },
    {
      "cohort_id": "COHORT-04-ANOMALY-ZONE-14TAXA-200LOCI",
      "title": "14-Taxon Deep Coalescent Anomaly-Zone & 5x Short-Internode ILS Benchmark (200 Gene Trees)",
      "taxonomic_scope": "Controlled Multispecies Coalescent 5x ILS Short-Internode Anomaly Zone (14 Taxa, 200 Gene Trees)",
      "upstream_pipeline_provenance": "200 Multispecies Coalescent Gene Trees Under Extreme 5x Incomplete Lineage Sorting (200,200 Quartets)",
      "taxa_count": 14,
      "internal_branches_count": 11,
      "gene_tree_count": 200,
      "total_quartets_evaluated": 200200,
      "native_result": {
        "engine_name": "bio-suite Native Quartet MSC v1 (Exact Tripartition DP + Quartet NNI + LPP)",
        "engine_mode": "CoalescentMode::Native",
        "taxa_count": 14,
        "gene_tree_count": 200,
        "total_quartets_evaluated": 200200,
        "satisfied_quartet_score": 118477,
        "normalized_quartet_score": 0.5918,
        "mean_local_posterior_pp1": 0.9209,
        "mean_branch_length_cu": 0.3054,
        "wall_clock_ms": 15.4524,
        "species_tree_newick": "(Sloth,(Horse,((Rabbit,Tree_Shrew)1.0000:0.3228,(Rat,((Galago,Mouse_Lemur)0.7670:0.0705,(Tarsier,((Marmoset,Macaque)0.9778:0.1328,(Orangutan,(Gorilla,(Human,Chimpanzee)0.9999:0.2389)1.0000:0.4042)1.0000:0.9460)0.9996:0.2262)0.7335:0.1127)1.0000:0.2848)0.6518:0.0608)1.0000:0.5601):0.0000);",
        "focal_branches": [
          {
            "branch_id": "BR-01",
            "clade_label": "Rabbit + Tree_Shrew",
            "subset_size": 2,
            "total_taxa": 14,
            "q1_main_freq": 0.5173,
            "q2_alt1_freq": 0.1888,
            "q3_alt2_freq": 0.294,
            "f1_quartet_weight": 103.45,
            "f2_quartet_weight": 37.75,
            "f3_quartet_weight": 58.8,
            "effective_loci_en": 200.0,
            "gene_concordance_gcf_pct": 16.5,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 0.3228,
            "discordance_asymmetry_chisq": 4.5894,
            "coalescent_regime": "Moderate Incomplete Lineage Sorting (0.20–1.00 CU)"
          },
          {
            "branch_id": "BR-02",
            "clade_label": "Galago + Mouse_Lemur",
            "subset_size": 2,
            "total_taxa": 14,
            "q1_main_freq": 0.3787,
            "q2_alt1_freq": 0.2899,
            "q3_alt2_freq": 0.3314,
            "f1_quartet_weight": 75.7429,
            "f2_quartet_weight": 57.9714,
            "f3_quartet_weight": 66.2857,
            "effective_loci_en": 200.0,
            "gene_concordance_gcf_pct": 29.0,
            "local_posterior_pp1": 0.767,
            "branch_length_cu": 0.0705,
            "discordance_asymmetry_chisq": 0.5563,
            "coalescent_regime": "Severe ILS / Rapid Radiation Zone (< 0.20 CU)"
          },
          {
            "branch_id": "BR-03",
            "clade_label": "Marmoset + Macaque",
            "subset_size": 2,
            "total_taxa": 14,
            "q1_main_freq": 0.4163,
            "q2_alt1_freq": 0.303,
            "q3_alt2_freq": 0.2808,
            "f1_quartet_weight": 83.25,
            "f2_quartet_weight": 60.5938,
            "f3_quartet_weight": 56.1563,
            "effective_loci_en": 200.0,
            "gene_concordance_gcf_pct": 19.5,
            "local_posterior_pp1": 0.9778,
            "branch_length_cu": 0.1328,
            "discordance_asymmetry_chisq": 0.1687,
            "coalescent_regime": "Severe ILS / Rapid Radiation Zone (< 0.20 CU)"
          },
          {
            "branch_id": "BR-04",
            "clade_label": "Human + Chimpanzee",
            "subset_size": 2,
            "total_taxa": 14,
            "q1_main_freq": 0.475,
            "q2_alt1_freq": 0.2473,
            "q3_alt2_freq": 0.2777,
            "f1_quartet_weight": 95.0,
            "f2_quartet_weight": 49.4545,
            "f3_quartet_weight": 55.5455,
            "effective_loci_en": 200.0,
            "gene_concordance_gcf_pct": 46.5,
            "local_posterior_pp1": 0.9999,
            "branch_length_cu": 0.2389,
            "discordance_asymmetry_chisq": 0.3533,
            "coalescent_regime": "Moderate Incomplete Lineage Sorting (0.20–1.00 CU)"
          },
          {
            "branch_id": "BR-05",
            "clade_label": "Gorilla + Human + Chimpanzee",
            "subset_size": 3,
            "total_taxa": 14,
            "q1_main_freq": 0.555,
            "q2_alt1_freq": 0.329,
            "q3_alt2_freq": 0.116,
            "f1_quartet_weight": 111.0,
            "f2_quartet_weight": 65.8,
            "f3_quartet_weight": 23.2,
            "effective_loci_en": 200.0,
            "gene_concordance_gcf_pct": 50.0,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 0.4042,
            "discordance_asymmetry_chisq": 20.3906,
            "coalescent_regime": "Asymmetric Discordance (Candidate Introgression)"
          },
          {
            "branch_id": "BR-06",
            "clade_label": "Orangutan + Gorilla + Human + Chimpanzee",
            "subset_size": 4,
            "total_taxa": 14,
            "q1_main_freq": 0.7411,
            "q2_alt1_freq": 0.1596,
            "q3_alt2_freq": 0.0993,
            "f1_quartet_weight": 148.2292,
            "f2_quartet_weight": 31.9167,
            "f3_quartet_weight": 19.8542,
            "effective_loci_en": 200.0,
            "gene_concordance_gcf_pct": 46.5,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 0.946,
            "discordance_asymmetry_chisq": 2.8105,
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          },
          {
            "branch_id": "BR-07",
            "clade_label": "Marmoset + Orangutan (+4 taxa)",
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            "q1_main_freq": 0.4683,
            "q2_alt1_freq": 0.177,
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            "f3_quartet_weight": 70.9464,
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            "gene_concordance_gcf_pct": 16.5,
            "local_posterior_pp1": 0.9996,
            "branch_length_cu": 0.2262,
            "discordance_asymmetry_chisq": 11.887,
            "coalescent_regime": "Asymmetric Discordance (Candidate Introgression)"
          },
          {
            "branch_id": "BR-08",
            "clade_label": "Marmoset + Orangutan (+5 taxa)",
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            "total_taxa": 14,
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            "gene_concordance_gcf_pct": 10.0,
            "local_posterior_pp1": 0.7335,
            "branch_length_cu": 0.1127,
            "discordance_asymmetry_chisq": 10.4512,
            "coalescent_regime": "Asymmetric Discordance (Candidate Introgression)"
          },
          {
            "branch_id": "BR-09",
            "clade_label": "Marmoset + Galago (+7 taxa)",
            "subset_size": 9,
            "total_taxa": 14,
            "q1_main_freq": 0.4986,
            "q2_alt1_freq": 0.2987,
            "q3_alt2_freq": 0.2028,
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            "f2_quartet_weight": 59.7321,
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            "gene_concordance_gcf_pct": 5.0,
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            "branch_length_cu": 0.2848,
            "discordance_asymmetry_chisq": 3.6677,
            "coalescent_regime": "Moderate Incomplete Lineage Sorting (0.20–1.00 CU)"
          },
          {
            "branch_id": "BR-10",
            "clade_label": "Marmoset + Galago (+8 taxa)",
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            "total_taxa": 14,
            "q1_main_freq": 0.3726,
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            "f3_quartet_weight": 55.75,
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            "gene_concordance_gcf_pct": 16.5,
            "local_posterior_pp1": 0.6518,
            "branch_length_cu": 0.0608,
            "discordance_asymmetry_chisq": 1.5559,
            "coalescent_regime": "Severe ILS / Rapid Radiation Zone (< 0.20 CU)"
          },
          {
            "branch_id": "BR-11",
            "clade_label": "Marmoset + Galago (+10 taxa)",
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            "q2_alt1_freq": 0.1123,
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            "discordance_asymmetry_chisq": 12.8242,
            "coalescent_regime": "Asymmetric Discordance (Candidate Introgression)"
          }
        ]
      },
      "astral_result": {
        "engine_name": "ASTRAL v5.7.8 (Mirarab et al. — Exact Quartet DP + Polytree Weighting)",
        "engine_mode": "CoalescentMode::Astral",
        "taxa_count": 14,
        "gene_tree_count": 200,
        "total_quartets_evaluated": 200200,
        "satisfied_quartet_score": 118477,
        "normalized_quartet_score": 0.5918,
        "mean_local_posterior_pp1": 0.9202,
        "mean_branch_length_cu": 0.3,
        "wall_clock_ms": 465.4921,
        "species_tree_newick": "(Sloth,(Horse,((Rabbit,Tree_Shrew)'[q1=0.5172499999999999;q2=0.2940000000000003;q3=0.1887500000000001;f1=103.44999999999997;f2=58.80000000000006;f3=37.75000000000002;pp1=0.9999998042641985;pp2=1.4348597793089057E-7;pp3=5.22498233785466E-8;QC=20;EN=200.0]':0.31747473288179084,(Rat,((Galago,Mouse_Lemur)'[q1=0.37871428571428595;q2=0.33142857142857146;q3=0.2898571428571427;f1=75.74285714285719;f2=66.28571428571429;f3=57.97142857142854;pp1=0.764210714982115;pp2=0.16057223620359998;pp3=0.07521704881428493;QC=35;EN=200.0]':0.06747103281247409,(Tarsier,((Marmoset,Macaque)'[q1=0.41625;q2=0.28078125;q3=0.30296875;f1=83.25;f2=56.15625;f3=60.59375;pp1=0.9770305045636168;pp2=0.009644074993352165;pp3=0.013325420443029952;QC=32;EN=200.0]':0.1292760670543843,((Gorilla,(Human,Chimpanzee)'[q1=0.47500000000000014;q2=0.27772727272727277;q3=0.24727272727272723;f1=95.00000000000003;f2=55.545454545454554;f3=49.454545454545446;pp1=0.9999394579443107;pp2=3.526742598528362E-5;pp3=2.5274629704043648E-5;QC=11;EN=200.0]':0.23440070583884456)'[q1=0.555;q2=0.11600000000000002;q3=0.32900000000000007;f1=111.0;f2=23.200000000000003;f3=65.80000000000001;pp1=0.9999999994457438;pp2=6.390838813839593E-11;pp3=4.903478418912494E-10;QC=20;EN=200.0]':0.3980301296206464,Orangutan)'[q1=0.7411458333333334;q2=0.1595833333333333;q3=0.09927083333333332;f1=148.22916666666669;f2=31.916666666666657;f3=19.854166666666664;pp1=1.0;pp2=5.459301568252935E-32;pp3=4.1298708819546285E-32;QC=48;EN=200.0]':0.9318811608571277)'[q1=0.46830357142857154;q2=0.35473214285714283;q3=0.17696428571428569;f1=93.6607142857143;f2=70.94642857142857;f3=35.39285714285714;pp1=0.9996021251682204;pp2=3.654466751705035E-4;pp3=3.2428156609103746E-5;QC=56;EN=200.0]':0.2218450876468987)'[q1=0.40441666666666626;q2=0.38599999999999995;q3=0.2095833333333334;f1=80.88333333333325;f2=77.19999999999999;f3=41.91666666666668;pp1=0.7318328458665919;pp2=0.2600920373671225;pp3=0.008075116766285572;QC=60;EN=200.0]':0.1093763072485703)'[q1=0.4985714285714286;q2=0.20276785714285717;q3=0.2986607142857142;f1=99.71428571428572;f2=40.55357142857143;f3=59.73214285714285;pp1=0.9999968321043236;pp2=8.594745491462529E-7;pp3=2.308421127465349E-6;QC=56;EN=200.0]':0.2798944224740972)'[q1=0.3726388888888892;q2=0.27874999999999966;q3=0.348611111111111;f1=74.52777777777784;f2=55.74999999999993;f3=69.7222222222222;pp1=0.6494412459059083;pp2=0.07161969905689493;pp3=0.2789390550371762;QC=36;EN=200.0]':0.05781710307223991)'[q1=0.6192500000000004;q2=0.2684999999999998;q3=0.11225000000000004;f1=123.85000000000008;f2=53.69999999999996;f3=22.45000000000001;pp1=0.9999999999999997;pp2=2.7603441291231316E-16;pp3=9.3850432497539E-17;QC=20;EN=200.0]':0.5520882211417425):0.0);",
        "focal_branches": [
          {
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            "clade_label": "Internal Branch 1",
            "subset_size": 2,
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            "q1_main_freq": 0.5172,
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            "f1_quartet_weight": 103.45,
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            "f3_quartet_weight": 37.75,
            "effective_loci_en": 200.0,
            "gene_concordance_gcf_pct": 51.725,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 0.3175,
            "discordance_asymmetry_chisq": 4.5894,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
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            "branch_id": "ASTRAL-BR-02",
            "clade_label": "Internal Branch 2",
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            "q1_main_freq": 0.3787,
            "q2_alt1_freq": 0.3314,
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            "f1_quartet_weight": 75.7429,
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            "effective_loci_en": 200.0,
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            "local_posterior_pp1": 0.7642,
            "branch_length_cu": 0.0675,
            "discordance_asymmetry_chisq": 0.5563,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-03",
            "clade_label": "Internal Branch 3",
            "subset_size": 2,
            "total_taxa": 14,
            "q1_main_freq": 0.4163,
            "q2_alt1_freq": 0.2808,
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            "f1_quartet_weight": 83.25,
            "f2_quartet_weight": 56.1563,
            "f3_quartet_weight": 60.5938,
            "effective_loci_en": 200.0,
            "gene_concordance_gcf_pct": 41.625,
            "local_posterior_pp1": 0.977,
            "branch_length_cu": 0.1293,
            "discordance_asymmetry_chisq": 0.1687,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-04",
            "clade_label": "Internal Branch 4",
            "subset_size": 2,
            "total_taxa": 14,
            "q1_main_freq": 0.475,
            "q2_alt1_freq": 0.2777,
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            "f1_quartet_weight": 95.0,
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            "f3_quartet_weight": 49.4545,
            "effective_loci_en": 200.0,
            "gene_concordance_gcf_pct": 47.5,
            "local_posterior_pp1": 0.9999,
            "branch_length_cu": 0.2344,
            "discordance_asymmetry_chisq": 0.3533,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-05",
            "clade_label": "Internal Branch 5",
            "subset_size": 2,
            "total_taxa": 14,
            "q1_main_freq": 0.555,
            "q2_alt1_freq": 0.116,
            "q3_alt2_freq": 0.329,
            "f1_quartet_weight": 111.0,
            "f2_quartet_weight": 23.2,
            "f3_quartet_weight": 65.8,
            "effective_loci_en": 200.0,
            "gene_concordance_gcf_pct": 55.5,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 0.398,
            "discordance_asymmetry_chisq": 20.3906,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-06",
            "clade_label": "Internal Branch 6",
            "subset_size": 2,
            "total_taxa": 14,
            "q1_main_freq": 0.7411,
            "q2_alt1_freq": 0.1596,
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            "f1_quartet_weight": 148.2292,
            "f2_quartet_weight": 31.9167,
            "f3_quartet_weight": 19.8542,
            "effective_loci_en": 200.0,
            "gene_concordance_gcf_pct": 74.1146,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 0.9319,
            "discordance_asymmetry_chisq": 2.8105,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-07",
            "clade_label": "Internal Branch 7",
            "subset_size": 2,
            "total_taxa": 14,
            "q1_main_freq": 0.4683,
            "q2_alt1_freq": 0.3547,
            "q3_alt2_freq": 0.177,
            "f1_quartet_weight": 93.6607,
            "f2_quartet_weight": 70.9464,
            "f3_quartet_weight": 35.3929,
            "effective_loci_en": 200.0,
            "gene_concordance_gcf_pct": 46.8304,
            "local_posterior_pp1": 0.9996,
            "branch_length_cu": 0.2218,
            "discordance_asymmetry_chisq": 11.887,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-08",
            "clade_label": "Internal Branch 8",
            "subset_size": 2,
            "total_taxa": 14,
            "q1_main_freq": 0.4044,
            "q2_alt1_freq": 0.386,
            "q3_alt2_freq": 0.2096,
            "f1_quartet_weight": 80.8833,
            "f2_quartet_weight": 77.2,
            "f3_quartet_weight": 41.9167,
            "effective_loci_en": 200.0,
            "gene_concordance_gcf_pct": 40.4417,
            "local_posterior_pp1": 0.7318,
            "branch_length_cu": 0.1094,
            "discordance_asymmetry_chisq": 10.4512,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-09",
            "clade_label": "Internal Branch 9",
            "subset_size": 2,
            "total_taxa": 14,
            "q1_main_freq": 0.4986,
            "q2_alt1_freq": 0.2028,
            "q3_alt2_freq": 0.2987,
            "f1_quartet_weight": 99.7143,
            "f2_quartet_weight": 40.5536,
            "f3_quartet_weight": 59.7321,
            "effective_loci_en": 200.0,
            "gene_concordance_gcf_pct": 49.8571,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 0.2799,
            "discordance_asymmetry_chisq": 3.6677,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-10",
            "clade_label": "Internal Branch 10",
            "subset_size": 2,
            "total_taxa": 14,
            "q1_main_freq": 0.3726,
            "q2_alt1_freq": 0.2787,
            "q3_alt2_freq": 0.3486,
            "f1_quartet_weight": 74.5278,
            "f2_quartet_weight": 55.75,
            "f3_quartet_weight": 69.7222,
            "effective_loci_en": 200.0,
            "gene_concordance_gcf_pct": 37.2639,
            "local_posterior_pp1": 0.6494,
            "branch_length_cu": 0.0578,
            "discordance_asymmetry_chisq": 1.5559,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          },
          {
            "branch_id": "ASTRAL-BR-11",
            "clade_label": "Internal Branch 11",
            "subset_size": 2,
            "total_taxa": 14,
            "q1_main_freq": 0.6193,
            "q2_alt1_freq": 0.2685,
            "q3_alt2_freq": 0.1123,
            "f1_quartet_weight": 123.85,
            "f2_quartet_weight": 53.7,
            "f3_quartet_weight": 22.45,
            "effective_loci_en": 200.0,
            "gene_concordance_gcf_pct": 61.925,
            "local_posterior_pp1": 1.0,
            "branch_length_cu": 0.5521,
            "discordance_asymmetry_chisq": 12.8242,
            "coalescent_regime": "ASTRAL v5.7.8 Exact Quartet Branch"
          }
        ]
      },
      "robinson_foulds_distance": 0,
      "max_robinson_foulds": 22,
      "topological_concordance_pct": 100.0,
      "quartet_score_ratio": 1.0,
      "normalized_quartet_delta": 0.0,
      "q1_pearson_r": 1.0,
      "branch_cu_pearson_r": 1.0,
      "lpp_concordance_pct": 100.0,
      "native_speedup_factor": 30.1243,
      "abba_baba_tests": [],
      "ascii_cohort_comparison_table": "====================================================================================================================\nCOHORT: COHORT-04-ANOMALY-ZONE-14TAXA-200LOCI — 14-Taxon Deep Coalescent Anomaly-Zone & 5x Short-Internode ILS Benchmark (200 Gene Trees)\nTaxa: 14 | Internal Splits: 11 | Input Gene Trees: 200 | Total Quartets Evaluated: 200200\nUpstream Provenance: 200 Multispecies Coalescent Gene Trees Under Extreme 5x Incomplete Lineage Sorting (200,200 Quartets)\n--------------------------------------------------------------------------------------------------------------------\nMetric                                  Native Quartet MSC (Rust)          ASTRAL v5.7.8 (Java)        Concordance\n--------------------------------------------------------------------------------------------------------------------\nSatisfied Quartet Score Q(T)                               118477                        118477        Ratio = 1.000000\nNormalized Quartet Score                                 0.591800                      0.591800        Delta = +0.000000\nRobinson-Foulds Split Distance                                  0                             0        100.00% Match (RF=0/22)\nMean Local Posterior Prob (LPP)                            0.9209                        0.9202        r(q1) = 1.0000\nMean Coalescent Branch Length (CU)                         0.3054                        0.3000        r(CU) = 1.0000\nWall-Clock Execution Time (ms)                              15.45                        465.49        30.12x Speedup\n===================================================================================================================="
    }
  ],
  "ascii_master_summary_table": "==========================================================================================================================================\nTOOL PAIR 4 CALIBRATION SUMMARY: Native Quartet Multispecies Coalescent (Rust) vs. ASTRAL v5.7.8 (Java)\n==========================================================================================================================================\nCohort ID                              Taxa   Loci    Total Quartets   Native Q-Score   ASTRAL Q-Score   Split Match    r(q1)    r(CU)   Speedup\n------------------------------------------------------------------------------------------------------------------------------------------\nCOHORT-01-CARNIVORA-16TAXA-NATIVE-CHAIN   16     16             29120            27482            27482       100.00%   1.0000   0.9525    37.73x\nCOHORT-02-SONG-PRIMATES-14TAXA-424LOCI   14    424            424424           389734           389734       100.00%   1.0000   0.9993    23.82x\nCOHORT-03-SONG-MAMMALS-37TAXA-424LOCI    37    424          28003080         25526915         25526915       100.00%   1.0000   0.9974     3.49x\nCOHORT-04-ANOMALY-ZONE-14TAXA-200LOCI    14    200            200200           118477           118477       100.00%   1.0000   1.0000    30.12x\n------------------------------------------------------------------------------------------------------------------------------------------\nOVERALL / CUMULATIVE (4 Cohorts)             1064          28656824                                         100.00%   1.0000   0.9873    23.79x\n==========================================================================================================================================",
  "ascii_mammalian_species_cladogram": "Amniota Root (Gallus gallus Outgroup | 424 Nuclear Loci | 28,003,080 Quartets | Q_norm = 0.9116)\n  ├───Gallus_gallus (Red Junglefowl — Sauropsida Outgroup)\n  └───Class Mammalia (q1 = 0.9976, LPP = 1.00, tau = 4.9535 CU)\n        ├───Prototheria: Ornithorhynchus_anatinus (Platypus)\n        └───Theria (q1 = 0.9976, LPP = 1.00, tau = 4.9535 CU)\n              ├───Metatheria / Marsupialia (q1 = 0.9976, LPP = 1.00, tau = 4.9535 CU)\n              │     ├───Monodelphis_domestica (Opossum)\n              │     └───Macropus_eugenii (Wallaby)\n              └───Eutheria / Placentalia\n                    ├───Atlantogenata [ILS Zone #1: q1 = 0.4082, q2 = 0.2811, q3 = 0.3107 | LPP = 0.9977 | tau = 0.1175 CU]\n                    │     ├───Xenarthra (q1 = 0.9936, LPP = 1.00, tau = 4.3332 CU): Choloepus (Sloth) + Dasypus (Armadillo)\n                    │     └───Afrotheria (q1 = 0.9702, LPP = 1.00, tau = 3.0324 CU): Echinops (Tenrec) + [Procavia (Hyrax) + Loxodonta (Elephant) | q1 = 0.8543, tau = 1.5072 CU]\n                    └───Boreoeutheria (q1 = 0.9093, LPP = 1.00, tau = 1.9714 CU)\n                          ├───Laurasiatheria (q1 = 0.5680, q2 = 0.2312, q3 = 0.2007 | LPP = 1.00 | tau = 0.4308 CU)\n                          │     ├───Eulipotyphla (q1 = 0.7597, LPP = 1.00, tau = 1.0128 CU): Sorex (Shrew) + Erinaceus (Hedgehog)\n                          │     └───Scrotifera [ILS Zone #2: q1 = 0.4068, q2 = 0.3131, q3 = 0.2800 | LPP = 0.9972 | tau = 0.1152 CU]\n                          │           ├───Chiroptera (q1 = 0.8609, LPP = 1.00, tau = 1.5530 CU): Myotis (Microbat) + Pteropus (Megabat)\n                          │           └───Fereuungulata [ILS Zone #3: q1 = 0.3756, q2 = 0.3172, q3 = 0.3072 | LPP = 0.9044 | tau = 0.0641 CU]\n                          │                 ├───Zooamata (Perissodactyla + Ferae): Equus (Horse) + [Canis (Dog) + Felis (Cat) | q1 = 0.9658, tau = 2.9058 CU]\n                          │                 └───Cetartiodactyla (q1 = 0.9836, LPP = 1.00, tau = 3.5728 CU): Vicugna (Alpaca) + [Sus (Pig) + (Tursiops + Bos | q1 = 0.8300, tau = 1.3550 CU) | q1 = 0.6497, tau = 0.6392 CU]\n                          └───Euarchontoglires (q1 = 0.6553, q2 = 0.1744, q3 = 0.1703 | LPP = 1.00 | tau = 0.6553 CU)\n                                ├───Gliriformes + Scandentia [ILS Zone #4: q1 = 0.3888, q2 = 0.3555, q3 = 0.2556 | LPP = 0.9247 | tau = 0.0854 CU]\n                                │     ├───Scandentia: Tupaia_belangeri (Tree Shrew)\n                                │     └───Glires (q1 = 0.7028, LPP = 1.00, tau = 0.8024 CU)\n                                │           ├───Lagomorpha (q1 = 0.9811, tau = 3.4494 CU): Oryctolagus (Rabbit) + Ochotona (Pika)\n                                │           └───Rodentia (q1 = 0.9560, tau = 2.6680 CU): Spermophilus (Squirrel) + [Cavia (Guinea Pig) + (Dipodomys + (Mus + Rattus | q1 = 0.9981))]\n                                └───Order Primates (q1 = 0.9106, LPP = 1.00, tau = 1.9852 CU)\n                                      ├───Strepsirrhini (q1 = 0.9418, tau = 2.4018 CU): Otolemur (Galago) + Microcebus (Mouse Lemur)\n                                      └───Haplorhini (q1 = 0.6553, tau = 0.6553 CU)\n                                            ├───Tarsiiformes: Tarsius_syrichta (Tarsier)\n                                            └───Simiiformes / Anthropoidea (q1 = 0.9929, tau = 4.2603 CU)\n                                                  ├───Platyrrhini: Callithrix_jacchus (Marmoset)\n                                                  └───Catarrhini (q1 = 0.9575, tau = 2.7005 CU)\n                                                        ├───Cercopithecidae: Macaca_mulatta (Rhesus Macaque)\n                                                        └───Hominidae / Great Apes (q1 = 0.9522, tau = 2.5898 CU)\n                                                              ├───Ponginae: Pongo_abelii (Orangutan)\n                                                              └───Homininae [ILS Zone #5: q1 = 0.9370, tau = 2.3252 CU]\n                                                                    ├───Gorilla_gorilla (Gorilla)\n                                                                    └───Hominini [35% ILS: q1 = 0.6503, q2 = 0.1653, q3 = 0.1844 | LPP = 1.00 | tau = 0.6408 CU]\n                                                                          ├───Homo_sapiens (Human)\n                                                                          └───Pan_troglodytes (Chimpanzee)"
}