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7c1a495 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | {
"dataset_name": "AI Skating Coach - Clean 64-Class",
"version": "1.0",
"description": "Figure skating element recognition with 64 classes including multi-jump combinations",
"total_samples": 5168,
"train_samples": 4161,
"test_samples": 1007,
"split_ratio": "80/20",
"num_classes": 64,
"sequence_length": 150,
"num_keypoints": 17,
"coordinates_per_keypoint": 3,
"duration_seconds": 5.0,
"fps": 30,
"keypoint_format": "COCO 17-point",
"data_characteristics": {
"no_augmentation": true,
"no_class_weights": true,
"no_synthetic_samples": true,
"combinations_preserved": true,
"format": "Pickle (NumPy-compatible, list of arrays)"
},
"data_sources": [
"MMFS Dataset: 2D pose from competition videos (4,915 sequences)",
"JSON Motion Capture: Professional 3D mocap (253 sequences)"
],
"preprocessing_steps": [
"Format unification (142-marker mocap \u2192 17-keypoint COCO)",
"Temporal uniform sampling to 150 frames",
"Coordinate normalization to [-1, 1]",
"Velocity feature computation",
"80/20 stratified train/test split"
],
"keypoint_definitions": {
"0-4": "Head (nose, left_eye, right_eye, left_ear, right_ear)",
"5-10": "Upper body (left_shoulder, right_shoulder, left_elbow, right_elbow, left_wrist, right_wrist)",
"11-16": "Lower body (left_hip, right_hip, left_knee, right_knee, left_ankle, right_ankle)"
}
} |