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dataset_info.json

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+{
+  "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)"
+  }
+}

label_mapping.json

@@ -0,0 +1,79 @@
+{
+  "mmfs_labels": [
+    0,
+    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,
+    40,
+    41,
+    42,
+    43,
+    44,
+    45,
+    46,
+    47,
+    48,
+    49,
+    50,
+    51,
+    52,
+    53,
+    54,
+    55,
+    56,
+    57,
+    58,
+    59,
+    60,
+    61,
+    62,
+    63
+  ],
+  "total_classes": 64,
+  "json_remapping": {
+    "63": 0,
+    "64": 1,
+    "65": 2,
+    "66": 3,
+    "67": 14,
+    "68": 15,
+    "69": null
+  },
+  "note": "JSON jumps merged into existing MMFS classes. Only Comb (63) kept separate."
+}