{
  "purpose": "Integrated TF-IDF backend verification; separate from original raw-text baseline",
  "date": "2026-10-15",
  "platform": "Windows-10-10.0.19045-SP0",
  "python": "3.12.13",
  "packages": {
    "jjm-engine": "0.1.0.dev0",
    "scikit-learn": "1.9.1",
    "numpy": "2.5.3",
    "scipy": "1.18.1"
  },
  "neural_modules_loaded": [],
  "settings": {
    "ngram_range": [
      1,
      2
    ],
    "min_df": 1,
    "max_features": null,
    "C": 4.0,
    "max_iter": 1000
  },
  "artifact_id": "head-b8704284d26cdfc31d87",
  "payload_digest": "sha256:b8704284d26cdfc31d875514287324e9b2aeb5c993b919eeca11e4a0296d0e93",
  "training": {
    "training_digest": "sha256:e75ed5f6ad9e2dc6d6532e5d860f1c65ef8399c6116bf8da5adf1876f6539219",
    "n": 9603,
    "fit_count": 7680,
    "label_source": {
      "kind": "human"
    },
    "label_counts": {
      "cards": 2119,
      "payments": 929,
      "transfers": 1359,
      "top_up": 1138,
      "cash": 533,
      "fees_fx": 1813,
      "security": 749,
      "account": 963
    },
    "split": "stratified 20% by text digest within each outcome, before vocabulary, IDF, and classifier fit",
    "feature_dim": 20643
  },
  "heldout": {
    "n": 1923,
    "accuracy": 0.9485179407176287,
    "macro_f1": 0.9413672466699412,
    "log_loss": 0.2526831396952102,
    "mean_top_mass": 0.8377982811286607,
    "split": "stratified 20% by text digest within each outcome, before vocabulary, IDF, and classifier fit",
    "note": "Fixed operator settings; no selection on holdout. Not yet accepted.",
    "report_id": "report-a91dc626d071a822ebbd"
  },
  "test": {
    "n": 3080,
    "accuracy": 0.9577922077922078,
    "macro_f1": 0.9528030617039702,
    "log_loss": 0.24463727659816972,
    "mean_top_mass": 0.842650103118145
  },
  "direct_vs_contract_max_weight_delta": 0.0,
  "fit_ms": 1578.9556999952765,
  "artifact_reload_ms": 566.1387000000104,
  "warm_contract": {
    "n": 200,
    "p50_ms": 1.8490000002202578,
    "p95_ms": 2.197484996577259
  },
  "warm_bare_classifier": {
    "n": 200,
    "p50_ms": 1.039399990986567,
    "p95_ms": 1.303204993746476
  },
  "evaluate_batch_ms": 4602.082900004461,
  "evaluate_batch_rows_per_second": 669.2621725690805,
  "split_sha256": "0cb3db5974d65e7bc912a6855319de20db927ef8b6a645544f97f40dfcdbdc21",
  "latency_sample_sha256": "6403ca7d1be4f85919404bc86a7d6cec0253db781c323ee2ab3bef8f7c25abe8",
  "sources": {
    "src/jjm/heads/tfidf.py": "f2f8daddc44272572a6ccd20ec9303eeb687befeb445c1d0e90549350a19a66a",
    "src/jjm/adapters/tfidf_adapter.py": "dd3503577dc37655b2fd8cbb0142adc685614d60ee4ca59ba71db698cd36d110",
    "trials/routing/tfidf_backend.py": "ba232a75249c2fe27e23b1993d68cc5a3c2ad825ab5b7cd8a6f10335c0843a86"
  },
  "note": "One run on a shared laptop; rendered JJM state and fixed C. No calibrated probabilities."
}