{
  "name": "qwen2.5-1.5b-general-forged",
  "version": "1.0.0",
  "description": "Forged Qwen2.5-1.5B for general domain via per-layer head pruning + LoRA recovery training. This alloy was retroactively synthesized from forging_results.json on 2026-04-08 \u2014 the forge run itself executed at 2026-03-27T09:01:22-05:00. The published model weights are unchanged; this alloy adds the missing forge-alloy provenance envelope so the artifact participates in the chain-of-custody system.",
  "author": "continuum-ai",
  "tags": [
    "general",
    "forged",
    "experiential-plasticity",
    "forge-alloy",
    "alloy-backfilled"
  ],
  "license": "apache-2.0",
  "source": {
    "baseModel": "Qwen/Qwen2.5-1.5B",
    "architecture": "qwen2"
  },
  "stages": [
    {
      "type": "prune",
      "strategy": "magnitude",
      "level": 0.3,
      "notes": "Legacy strategy name from forging_results.json: 'combined'. Mapped to canonical 'magnitude' for the alloy schema. The actual forge run used the legacy code path; this alloy is a retroactive provenance record, not a re-execution recipe."
    },
    {
      "type": "train",
      "domain": "general",
      "steps": 1000,
      "learningRate": "2e-4",
      "dataset": "wikitext-2"
    }
  ],
  "cycles": 3,
  "results": {
    "completedAt": "2026-03-27T09:01:22-05:00",
    "baselinePerplexity": 2.5,
    "finalPerplexity": 2.44,
    "improvementPct": 2.4,
    "benchmarks": [
      {
        "name": "perplexity",
        "metrics": {
          "baseline": 2.5,
          "final": 2.44,
          "improvement_pct": 2.4,
          "dataset": "wikitext-2"
        }
      }
    ],
    "hardwareVerified": [
      {
        "device": "MacBook Air 8GB",
        "format": "fp16",
        "verified": false
      },
      {
        "device": "MacBook Pro 16GB",
        "format": "fp16",
        "verified": true
      }
    ],
    "samples": [],
    "integrity": {
      "trustLevel": "self-attested",
      "code": {
        "runner": "sentinel-ai/forge_model (legacy pre-\u00a74.1.3.1 path)",
        "version": "2.x",
        "binaryHash": "sha256:legacy-pre-alloy-schema"
      },
      "modelHash": "sha256:21ca799dd3ee2f73526c9422b69bc9f931e8a22be34f21e1bc537a4df86a998a",
      "fileHashes": [
        {
          "filename": "model.safetensors",
          "sha256": "84d005e8a74c3feda47abd286622e4b95d37f055587593a9423c659a2a550138",
          "size": 3087467144
        }
      ],
      "datasets": [
        {
          "name": "wikitext-2",
          "hash": "sha256:not-pinned-legacy"
        }
      ],
      "attestedAt": "2026-03-27T09:01:22-05:00"
    }
  }
}