{
  "paper": "2605.23310",
  "adapter": "akt-rec",
  "dataset": "MovieLens 100K sampled CTR",
  "seeds": [
    42,
    43,
    44
  ],
  "setup": {
    "users": 320,
    "items": 1682,
    "model": "HuggingFaceTB/SmolLM2-135M",
    "item_contrastive_steps": 30,
    "user_supervision_steps": 30,
    "rqvae_steps": 100,
    "ctr_steps_per_variant_seed": 400
  },
  "semantic_training": {
    "lora_trainable_parameters": 230400,
    "item_contrastive_initial": 2.0948160171508787,
    "item_contrastive_final": 2.106735944747925,
    "user_supervision_initial": 3.3053980350494383,
    "user_supervision_final": 2.1679868698120117,
    "item_unique_codes": 470,
    "user_unique_codes": 75
  },
  "validation": {
    "online_base": {
      "auc": 0.47915364583333336,
      "gauc": 0.46458333333333335,
      "tail_auc": 0.44913928012519566
    },
    "akt_rec": {
      "auc": 0.4847200520833333,
      "gauc": 0.4708333333333334,
      "tail_auc": 0.47433489827856024
    }
  },
  "test": {
    "online_base": {
      "auc": 0.45600260416666666,
      "auc_std": 0.02721163481095937,
      "gauc": 0.45208333333333334,
      "gauc_std": 0.018807781338820623,
      "tail_auc": 0.5085387104804581,
      "tail_auc_std": 0.03503610755610072
    },
    "akt_rec": {
      "auc": 0.4717024739583333,
      "auc_std": 0.02198637351530593,
      "gauc": 0.4770833333333333,
      "gauc_std": 0.010311973892303806,
      "tail_auc": 0.5194921583271098,
      "tail_auc_std": 0.020810955345101103
    }
  },
  "relative_akt_rec_vs_online_base_percent": {
    "auc": 3.4429342394563234,
    "gauc": 5.529953917050683,
    "tail_auc": 2.1539064029763115
  },
  "reproduction_fidelity": "core_mechanism",
  "schema_version": 2,
  "manifest_ref": "reproduction:akt-rec",
  "evaluation_protocol": {
    "tier": "l2_public_dataset",
    "seeds": [
      42,
      43,
      44
    ],
    "formal_comparison": true,
    "claim_policy": "formal multi-seed comparison"
  },
  "provenance": {
    "artifact_path": "docs/reproductions/2605.23310-akt-rec/metrics/movielens-100k-seeds42-44.json",
    "historical_migration": "historical-metrics-v2-2026-08-09",
    "original_code_commit": "not recorded",
    "dataset_fingerprint": "not recorded in historical artifact"
  }
}