{
  "schema_version": 2,
  "adapter_key": "cast-opd",
  "method": "cast-opd",
  "seeds": [
    42
  ],
  "dataset": {
    "id": "openai/grade-school-math",
    "revision": "3101c7d5072418e28b9008a6636bde82a006892c",
    "train_sha256": "6b8672439c8cf6f6b6e65bf5f0e515fbf4c497c9066eefb62a6a6a61ced158e3",
    "validation_sha256": "2cf1119ad7b2e31e825274487ef32c073e03a8ed44f08ecd3e0366c1f40ebdb7"
  },
  "diagnostic_only": true,
  "measured_locally": true,
  "evaluation_tier": "l1_mechanism",
  "metrics": {
    "adapter_parameter_delta_l2": 0.007753067897551781,
    "validation_examples": 4,
    "validation_exact_match": 0.0,
    "aligned_tokens": 512,
    "unaligned_tokens": 0
  },
  "run": {
    "schema_version": 1,
    "adapter_key": "cast-opd",
    "seed": 42,
    "diagnostic_only": true,
    "evaluation_tier": "l1_mechanism",
    "claim_scope": "bounded real checkpoint runtime validation; no benchmark gain claim",
    "models": {
      "student": {
        "id": "Qwen/Qwen2.5-0.5B-Instruct",
        "revision": "7ae557604adf67be50417f59c2c2f167def9a775",
        "immutable_revision_verified": true,
        "verification": "pinned public-source manifest with exact file SHA256",
        "file_sha256": {
          "config.json": "18e18afcaccafade98daf13a54092927904649e1dd4eba8299ab717d5d94ff45",
          "generation_config.json": "e558847a8b4402616f1273797b015104dc266fe4b520056fca88823ba8f8ebe6",
          "merges.txt": "599bab54075088774b1733fde865d5bd747cbcc7a547c5bc12610e874e26f5e3",
          "model.safetensors": "fdf756fa7fcbe7404d5c60e26bff1a0c8b8aa1f72ced49e7dd0210fe288fb7fe",
          "tokenizer.json": "c0382117ea329cdf097041132f6d735924b697924d6f6fc3945713e96ce87539",
          "tokenizer_config.json": "5b5d4f65d0acd3b2d56a35b56d374a36cbc1c8fa5cf3b3febbbfabf22f359583",
          "vocab.json": "ca10d7e9fb3ed18575dd1e277a2579c16d108e32f27439684afa0e10b1440910"
        }
      },
      "teacher": {
        "id": "HuggingFaceTB/SmolLM2-135M-Instruct",
        "revision": "12fd25f77366fa6b3b4b768ec3050bf629380bac",
        "immutable_revision_verified": true,
        "verification": "pinned public-source manifest with exact file SHA256",
        "file_sha256": {
          "model.safetensors": "5af571cbf074e6d21a03528d2330792e532ca608f24ac70a143f6b369968ab8c",
          "tokenizer_config.json": "4ec77d44f62efeb38d7e044a1db318f6a939438425312dfa333b8382dbad98df",
          "special_tokens_map.json": "2b7379f3ae813529281a5c602bc5a11c1d4e0a99107aaa597fe936c1e813ca52",
          "config.json": "8eb740e8bbe4cff95ea7b4588d17a2432deb16e8075bc5828ff7ba9be94d982a",
          "tokenizer.json": "9ca9acddb6525a194ec8ac7a87f24fbba7232a9a15ffa1af0c1224fcd888e47c",
          "train_results.json": "713996ce10b9d99a440fec73c0f3bdb2f3c4db6adba3d027bdaa40796f059b2d",
          "generation_config.json": "87b916edaaab66b3899b9d0dd0752727dff6666686da0504d89ae0a6e055a013",
          "merges.txt": "0b54e8aa4e53d5383e2e4bc635a56b43f9647f7b13832d5d9ecd8f82dac4f510",
          "eval_results.json": "6c7ecd0c2c0e8f6af8cbb34065fb2d5eb4c504febf2e266a7c7f948f13c70b7c",
          "vocab.json": "82b84012e3add4d01d12ba14442026e49b8cbbaead1f79ecf3d919784f82dc79",
          "all_results.json": "1f68a2e167194d764c414643b54f0960945dc3f46bc47ec53b02475df527f376",
          "trainer_state.json": "9664b2f12a8a29cad27a12da7b0d3a1081c8ba1392bcec71fa3bfd4fafc11284"
        }
      }
    },
    "dataset": {
      "id": "openai/grade-school-math",
      "revision": "3101c7d5072418e28b9008a6636bde82a006892c",
      "train_sha256": "6b8672439c8cf6f6b6e65bf5f0e515fbf4c497c9066eefb62a6a6a61ced158e3",
      "validation_sha256": "2cf1119ad7b2e31e825274487ef32c073e03a8ed44f08ecd3e0366c1f40ebdb7"
    },
    "budget": {
      "steps": 2,
      "max_tokens": 128,
      "group": 2,
      "forks": 3,
      "continuations": 2,
      "priming_examples": 2,
      "rounds": 2,
      "pool_examples": 4,
      "acquisition": 2,
      "teacher_rollouts": 2
    },
    "metrics": {
      "adapter_parameter_delta_l2": 0.007753067897551781,
      "validation_examples": 4,
      "validation_exact_match": 0.0,
      "aligned_tokens": 512,
      "unaligned_tokens": 0
    },
    "history": [
      {
        "loss": 0.6927358508110046,
        "gradient_l2": 0.8826789855957031,
        "aligned_tokens": 256,
        "unaligned_tokens": 0,
        "alignment_chunks": 251,
        "rollouts": 2,
        "response_tokens": 256,
        "step": 0
      },
      {
        "loss": 0.9769706130027771,
        "gradient_l2": 0.969049334526062,
        "aligned_tokens": 256,
        "unaligned_tokens": 0,
        "alignment_chunks": 237,
        "rollouts": 2,
        "response_tokens": 256,
        "step": 1
      }
    ],
    "split_provenance": {
      "verified": true,
      "test_read": false,
      "source_id": "openai/grade-school-math",
      "source_revision": "3101c7d5072418e28b9008a6636bde82a006892c",
      "source_sha256": "17f347dc51477c50d4efb83959dbb7c56297aba886e5544ee2aaed3024813465",
      "partition_sha256": {
        "train": "6b8672439c8cf6f6b6e65bf5f0e515fbf4c497c9066eefb62a6a6a61ced158e3",
        "validation": "2cf1119ad7b2e31e825274487ef32c073e03a8ed44f08ecd3e0366c1f40ebdb7"
      },
      "partition": "normalized-question sha256 unsigned-prefix / 2^64 < 0.1 validation"
    },
    "test_read": false,
    "validation_used_for_selection": false,
    "gold_in_rollout": false
  },
  "provenance": {
    "executed_commit": "6765289590741a1b656dde7f3d0495349c70f485",
    "raw_result_sha256": "0a724b0a8194aa003af08b5dc5a51f189086b4fd814cc1d3d7e76c828bfc897d",
    "source_hash_origin": "git show executed_commit:path; not current HEAD or dirty files",
    "artifact_path": "docs/reproductions/2610.13257-cast-opd/metrics/gsm8k-a100-42.json",
    "dataset_fingerprint": "65de11e30fc29e30a01b0209ad3635709a821b03ab49004facac5336611c442d",
    "dataset_fingerprint_kind": "sha256 of canonical JSON actual dataset/revision/input-or-split hash descriptors; not a digest of the full upstream dataset",
    "executed_code_commit": "6765289590741a1b656dde7f3d0495349c70f485",
    "gpu_validation_artifact": "docs/gpu-validations/cast-opd-a100-20261012.json"
  },
  "historical_evidence": "../assets/historical-namespace-migration.json",
  "manifest_ref": "reproduction:cast-opd",
  "evaluation_protocol": {
    "tier": "l1_mechanism",
    "seeds": [
      42
    ],
    "formal_comparison": false,
    "claim_policy": "single/few-seed smoke result; do not claim a stable improvement"
  }
}