{
  "schema_version": 2,
  "protocol": "frozen-decoder-prediction-planning-v1",
  "diagnostic_only": true,
  "promotion_eligible": false,
  "seed": 42,
  "evaluation_tier": "l1_mechanism",
  "dataset": {
    "id": "controlled-array-interface-example",
    "revision": "controlled-v1",
    "synthetic": true
  },
  "full_experiment_status": "not_reproduced_high_cost",
  "metrics": {
    "representation_error": 0.0049037730411983825,
    "prediction_error": 0.027396742591945845,
    "excess_error": 0.022492969550747463,
    "latent_drift": 0.20990922416453406,
    "persistence_error": 0.0029629629629629593,
    "constant_velocity_error": 5.021684003143015e-33
  },
  "decoder": {
    "kind": "two-layer-ReLU-MLP",
    "hidden": 16,
    "best_epoch": 59,
    "validation_loss": 0.001815500112531899,
    "fit_role": "provided encoder latents on training-only episodes; no predicted/test latents"
  },
  "fidelity": {
    "metrics": {
      "representation_error": 0.0049037730411983825,
      "prediction_error": 0.027396742591945845,
      "excess_error": 0.022492969550747463,
      "latent_drift": 0.20990922416453406,
      "persistence_error": 0.0029629629629629593,
      "constant_velocity_error": 5.021684003143015e-33
    },
    "episode_metrics": {
      "representation_error": {
        "test0": 0.007391825317395253,
        "test1": 0.002516864414765249,
        "test2": 0.004802629391434646
      },
      "prediction_error": {
        "test0": 0.033109475498363836,
        "test1": 0.005310708214545908,
        "test2": 0.043770044062927796
      },
      "excess_error": {
        "test0": 0.025717650180968582,
        "test1": 0.002793843799780659,
        "test2": 0.03896741467149315
      },
      "latent_drift": {
        "test0": 0.22360679774997902,
        "test1": 0.1825140769936442,
        "test2": 0.22360679774997894
      },
      "persistence_error": {
        "test0": 0.0029629629629629615,
        "test1": 0.0029629629629629615,
        "test2": 0.0029629629629629554
      },
      "constant_velocity_error": {
        "test0": 0.0,
        "test1": 4.565167275584559e-34,
        "test2": 1.4608535281870588e-32
      }
    },
    "episodes": 3,
    "transitions": 4,
    "aggregation": "transitions within episodes, then equally weighted episodes",
    "decoder_sha256": "47454b06cdff1a3351d7be507e866431d06e0a273085bceb283962d0ae5a14fc",
    "normalization_sha256": "71557e40fc97dab5c6c71d9cdac39cac089caad5a30b7e6ee16aa81e661b0fc0",
    "decoder_dominance_ratio": 0.8210089018889419,
    "decoder_dominance_warning": false,
    "test_isolated": true,
    "prediction_is_not_planning": true
  },
  "limitations": [
    "CPU protocol component, not a new JEPA checkpoint or a full benchmark reproduction.",
    "Planning rows are external measurements; the component does not generate planner success.",
    "Predictive fidelity is never used as a replacement for planning outcomes."
  ],
  "input_sha256": "0094a00e7546726a337dd93df74997c93954ff354e173c6b5b3bf190d2c246b9",
  "manifest_ref": "foundation-models:controlled-cpu",
  "evaluation_protocol": {
    "tier": "l1_mechanism",
    "seeds": [
      42
    ],
    "formal_comparison": false,
    "claim_policy": "single/few-seed smoke result; do not claim a stable improvement"
  },
  "provenance": {
    "artifact_path": "docs/foundation-models/2610.19375-jepa-prediction-planning/metrics/controlled-cpu.json",
    "dataset_fingerprint": "not recorded in historical artifact"
  }
}