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README.md

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+---
+license: apache-2.0
+language:
+  - en
+tags:
+  - motion-inbetweening
+  - keypose-extraction
+  - character-animation
+  - adaptive-interpolation-synthesis
+---
+
+# Motion In-Betweening Dataset
+
+## Dataset Description
+
+This dataset contains character animation sequences from production. It is used for training and evaluating the motion in-betweening method presented in:
+
+https://arxiv.org/abs/2605.02742
+
+> Raël et al., "Adaptive Interpolation-Synthesis for Motion In-Betweening on Keyframe-Based Animation",
+> SIGGRAPH 2026 Conference Papers (2026)
+
+## Dataset Summary
+
+The dataset provides character animation at 24 fps for a single production rig, with each frame represented as a D=596-dimensional vector of rig controller values. It is split into two subsets:
+
+- **`in_house_dataset:`** 8.5 hours of internal production sequences, split 95% for training and 5% for held-out evaluation (`test_held_out_algorithmic` and `test_held_out_random` splits).
+- **`prod_test_dataset:`** 5 minutes of production data with ground-truth blocking keyposes, used for the `test_production` evaluation split.
+
+For each subset, the dataset provides the processed per-frame controller-value sequences (`vectorized_controller_values/`) along with the corresponding block keypose annotations (`vectorized_block_keyframes/`). For `in_house_dataset`, the block keyposes are determined by the Domain-Based Algorithm; for `prod_test_dataset`, they are ground-truth animator block keyposes.
+
+## Usage
+
+See the [GitHub repository](https://github.com/animaj-lab/mib-ais)
+
+## Data Format
+
+The repository is organized as follows:
+
+```
+root_directory/
+├── in_house_dataset
+│   ├── ranges.csv
+│   ├── split_types.csv
+│   ├── vectorized_block_keyframes
+│   │   ├── test.h5
+│   │   └── train.h5
+│   └── vectorized_controller_values
+│       └── ef25a8e5ecd2fa86420741e5646cd785aa025c44c06f4118aab77f558c8f6981
+│           ├── test.h5
+│           └── train.h5
+└── prod_test_dataset
+    ├── ranges.csv
+    ├── split_types.csv
+    ├── vectorized_block_keyframes
+    │   ├── test.h5
+    │   └── train.h5
+    └── vectorized_controller_values
+        └── ef25a8e5ecd2fa86420741e5646cd785aa025c44c06f4118aab77f558c8f6981
+            ├── test.h5
+            └── train.h5
+```
+
+## License
+
+Apache 2.0