{
  "model_type": "esi_triage_bert_v44",
  "architecture": "BERTv44Heads multi-head",
  "encoder": "microsoft/BiomedNLP-BiomedBERT-base-uncased-abstract-fulltext",
  "model_version": "v70b",
  "training_config": {
    "epochs": 3,
    "batch_size": 64,
    "lr": 3e-5,
    "bf16": true,
    "label_smoothing_esi": 0.05,
    "phase_3_consistency_alpha": 0.15,
    "eng_features_dim": 12,
    "age_bucket_head": true,
    "pain_bucket_head": true,
    "loss_weights": {
      "esi": 2.0,
      "symptom": 1.5,
      "resource": 1.0,
      "resource_count": 0.8,
      "flag": 0.6,
      "vitals": 1.0,
      "ner": 0.5,
      "medrec": 0.5,
      "airway": 0.6,
      "resus": 0.6,
      "pain": 0.099,
      "age": 0.06,
      "arrival": 0.3,
      "gender": 0.2,
      "gestalt": 0.3,
      "disposition": 0.2,
      "syndrome": 0.2,
      "history": 0.1,
      "last_dx": 0.1,
      "age_bucket": 1.0,
      "pain_bucket": 1.0,
      "consistency": 0.15
    }
  },
  "heads": {
    "esi": "5-class CE (PRIMARY)",
    "symptom": "200-dim BCE per symptom",
    "flag": "3-class CE airway/resus/altered_mental",
    "vitals": "6-dim regression",
    "airway": "binary BCE",
    "resus": "binary BCE",
    "ner": "21-class BIO span tagging",
    "arrival": "5-class CE",
    "age_bucket": "8-class CE",
    "pain_bucket": "5-class CE",
    "medrec": "binary BCE anticoag/antiplatelet",
    "resource_count": "3-class CE (0/1/2+ bucket)",
    "gestalt": "5-class CE OUT-1..5"
  },
  "esi_head_input_dim": 780,
  "esi_head_dim_breakdown": "768 BERT [CLS] + 12 engineered features",
  "max_length": 128,
  "encoder_dim": 768,
  "training_corpus": "v70+ (v67 base 405,242 records + 109 v70+ synth)",
  "training_data_sources": [
    "MIMIC-IV-ED (Boston compact CC, pyxis-truth resources)",
    "MIETIC clean holdout (UCSF narrative)",
    "MC-MED clean holdout (Stanford compact CC)",
    "Lukina v3 (Russian-physician style narrative)",
    "ER-REASON (UCSF academic narrative, truncated)",
    "v70+ synth (DOA discrimination, ICH-on-anticoag, MCMED walk-in coverage)"
  ],
  "ship_metrics": {
    "val_esi_exact_epoch_3": 0.781,
    "val_esi_adjacent_epoch_3": 0.980,
    "stack_esi1_recall_mcmed": 0.84,
    "stack_esi1_recall_mietic": 0.967,
    "stack_esi1_recall_lukina": 1.0,
    "stack_esi1_recall_mimic": 0.876,
    "stack_esi1_recall_3corpus_avg": 0.881
  }
}