{
  "dataset": "KuaiRand-Pure",
  "protocol": "500000 raw rows; user_id<10000; positive click or long view; per-user last two held out; full 7583-item ranking; observed history masked; 1000 fixed-seed examples per evaluation split",
  "events": 48075,
  "training_examples": 12462,
  "validation_examples": 2140,
  "test_examples": 2140,
  "steps_per_variant": 800,
  "seeds": [
    42,
    43,
    44
  ],
  "test_recall_at_10": {
    "muser": [
      0.022,
      0.03,
      0.025
    ],
    "recent_single_id": [
      0.015,
      0.003,
      0.012
    ],
    "without_compression": [
      0.022,
      0.029,
      0.023
    ],
    "without_semantics": [
      0.014,
      0.003,
      0.016
    ]
  },
  "test_ndcg_at_10": {
    "muser": [
      0.0113318671,
      0.0138280143,
      0.0136361107
    ],
    "recent_single_id": [
      0.0092039706,
      0.0010759486,
      0.0057578901
    ],
    "without_compression": [
      0.0123286691,
      0.0143257214,
      0.012996064
    ],
    "without_semantics": [
      0.0083402579,
      0.0009353933,
      0.0068617004
    ]
  },
  "evaluation_tier": "l2_public_dataset",
  "diagnostic_only": true,
  "evaluation_protocol": {
    "tier": "l1_mechanism",
    "seeds": [
      42,
      43,
      44
    ],
    "formal_comparison": false,
    "claim_policy": "public-data concept diagnostic; private semantic tower and serving omitted"
  },
  "provenance": {
    "dataset_fingerprint": "sha256:c814bf6f3624c0cfae83c57de3df26b2ed206e5c57bab4c4dcbfabbabe20cbf0",
    "artifact_path": "docs/reproductions/2609.23677-muser/metrics/kuairand-pure-seeds42-44.json",
    "historical_migration": "historical-metrics-v2-2026-08-09",
    "original_code_commit": "not recorded"
  },
  "limitations": "Public tags stand in for private multimodal LLM/BGE semantic features; not a paper-fidelity or online result.",
  "schema_version": 2,
  "manifest_ref": "reproduction:muser"
}