{
  "paper": "2605.20948",
  "adapter": "memory-grafting",
  "dataset": {
    "name": "WikiText-2",
    "train_tokens": 180000,
    "validation_tokens": 24000
  },
  "setup": {
    "seed": 42,
    "recipient_steps": 45,
    "teacher_steps": 30,
    "memory_capacity": 192,
    "ngram_orders": [
      2,
      3,
      4
    ]
  },
  "variants": {
    "Transformer": {
      "loss": 6.1529898445,
      "perplexity": 470.1208759,
      "trainable_parameters": 172352
    },
    "Engram": {
      "loss": 6.116151154,
      "perplexity": 453.1173551,
      "trainable_parameters": 205504
    },
    "Memory Grafting": {
      "loss": 6.1164583564,
      "perplexity": 453.2565752,
      "trainable_parameters": 205504,
      "exact_hit_rate": 0.0833333358
    }
  },
  "relative": {
    "ppl_reduction_vs_transformer_percent": 3.5872265,
    "ppl_reduction_vs_engram_percent": -0.030725
  },
  "paper_benchmark_average": {
    "MoE": 51.95,
    "Engram": 52.43,
    "Memory Grafting": 53.86
  },
  "schema_version": 2,
  "manifest_ref": "reproduction:memory-grafting",
  "evaluation_protocol": {
    "tier": "l2_public_dataset",
    "seeds": [
      42
    ],
    "formal_comparison": false,
    "claim_policy": "single/few-seed smoke result; do not claim a stable improvement"
  },
  "provenance": {
    "artifact_path": "docs/reproductions/2605.20948-memory-grafting/metrics/wikitext2-seed42.json",
    "historical_migration": "historical-metrics-v2-2026-08-09",
    "original_code_commit": "not recorded",
    "dataset_fingerprint": "not recorded in historical artifact"
  }
}