{
  "schema": "knav-reassessment-evidence-v1",
  "date": "2026-09-18",
  "source": "knav/artifacts/navigation-bfm-joint-20260915/SUMMARY.json",
  "source_sha256": "8561789d0131cf55c3e9d494bbfdfabe4ab246ae8af7223e1afdea1aca9c35e0",
  "scope": "four student-development motions, two simulator seeds, one training seed; teacher saw these motions",
  "rows": [
    {
      "arm": "teacher",
      "trials": 8,
      "complete": 8,
      "task_success": 1,
      "events_passed": 37,
      "events_total": 64,
      "mean_captured_fraction": 1.0,
      "offline_action_mse": null
    },
    {
      "arm": "mean",
      "trials": 8,
      "complete": 0,
      "task_success": 0,
      "events_passed": 0,
      "events_total": 64,
      "mean_captured_fraction": 0.04533518690145197,
      "offline_action_mse": 0.09956113495635446
    },
    {
      "arm": "measured",
      "trials": 8,
      "complete": 0,
      "task_success": 0,
      "events_passed": 0,
      "events_total": 64,
      "mean_captured_fraction": 0.08030113766101193,
      "offline_action_mse": 0.053070897871593976
    },
    {
      "arm": "joint",
      "trials": 8,
      "complete": 0,
      "task_success": 0,
      "events_passed": 1,
      "events_total": 64,
      "mean_captured_fraction": 0.09301251830062726,
      "offline_action_mse": 0.045694395128122324
    },
    {
      "arm": "staged",
      "trials": 8,
      "complete": 0,
      "task_success": 0,
      "events_passed": 1,
      "events_total": 64,
      "mean_captured_fraction": 0.12798518488670402,
      "offline_action_mse": 0.04644682975408756
    },
    {
      "arm": "deterministic",
      "trials": 8,
      "complete": 0,
      "task_success": 0,
      "events_passed": 0,
      "events_total": 64,
      "mean_captured_fraction": 0.09569549099407665,
      "offline_action_mse": 0.04709277879933478
    }
  ],
  "measured_action_mse_reduction_percent": 46.695165844725295,
  "individual_trial_aggregates_recomputed": true,
  "diagnostics": {
    "oracle_reference": {
      "trials": 4,
      "complete": 4,
      "task_success": 1,
      "events_passed": 19,
      "events_total": 32,
      "mean_captured_fraction": 1.0
    },
    "posterior_joint": {
      "trials": 4,
      "complete": 0,
      "task_success": 0,
      "events_passed": 4,
      "events_total": 32,
      "mean_captured_fraction": 0.28607742004808534
    },
    "posterior_staged": {
      "trials": 4,
      "complete": 1,
      "task_success": 0,
      "events_passed": 3,
      "events_total": 32,
      "mean_captured_fraction": 0.34499536607970344
    },
    "posterior_deterministic": {
      "trials": 4,
      "complete": 0,
      "task_success": 0,
      "events_passed": 3,
      "events_total": 32,
      "mean_captured_fraction": 0.20041033700017463
    }
  },
  "new_physics": 0,
  "new_training": 0,
  "limits": [
    "reference-state initialization",
    "imitation termination",
    "flat floor",
    "ideal simulator localization",
    "no obstacle or hardware success established"
  ]
}
