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EvenFlow
File size: 2,253 Bytes
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{
  "schema_version": "0.3",
  "scene_id": "aligned_flow.af_0048",
  "layout": {
    "layout_id": "research.sc.s2016",
    "path": "../layouts/s2016.layout.simplified.json",
    "coordinate_frame": "layout_xy_meters",
    "notes": "Scene geometry is expressed in the referenced layout frame."
  },
  "window": {
    "start": "1971-03-27T19:23:50.042608Z",
    "end": "1971-03-27T19:24:00.042608Z",
    "duration_s": 10.0
  },
  "tracking": {
    "tracking_id": "aligned_flow.af_0048",
    "format": "csv",
    "path": "../tracks/aligned_flow.af_0048.tracks.csv",
    "timestamp_field": "timestamp",
    "track_id_field": "person_track_id",
    "coordinate_frame": "layout_xy_meters",
    "notes": "Windowed export from raw tracking chunk with all original columns preserved."
  },
  "flow": {
    "p_star": [
      2.907966390076513,
      4.98101134601618
    ],
    "u_hat": [
      0.039598704498477556,
      -0.9992156637093127
    ]
  },
  "metadata": {
    "task_type": "aligned_flow",
    "description": "Aligned-flow benchmark scene exported from mined human candidate af_0048.",
    "score": 2.9743192711769506,
    "rerank_score": 5.542018700479976,
    "alignment_signed": 0.9998299184217152,
    "crowd_coherence": 0.8742544708770608,
    "crowd_local_density": 125.24,
    "difficulty_score_raw": 0.8907253750152145,
    "difficulty_score_norm": 0.91753418762641,
    "difficulty_category": "hard",
    "difficulty_rank_within_category": 3,
    "heading_diff_deg": 1.0567504088423902,
    "subject_displacement_m": 4.003199226673165,
    "subject_duration_s": 9.900913,
    "crowd_n_other_tracks": 5,
    "crowd_n_samples": 500
  },
  "provenance": {
    "generator": {
      "name": "build_aligned_flow_benchmark",
      "version": "0.2.0"
    },
    "generated_at": null,
    "source": {
      "chunk_file": "/Volumes/EvenFlow/tracks/clean/sc.s2016/tracking_data_research.sc.s2016_1971-03-27T00:00:00Z_1971-03-28T00:00:00Z/by_chunks/chunk_1971-03-27T19_20_00Z_1971-03-27T19_25_00Z.csv",
      "person_track_id": "3948a75c1cc1",
      "window_start": "1971-03-27T19:23:50.042608+00:00",
      "window_end": "1971-03-27T19:24:00.042608+00:00",
      "candidates_csv": "out/af_clean/s2016_alignedflow_humans_with_difficulty.csv"
    }
  }
}