Add dataset documentation and SHA256 checksum

README.md

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+---
+pretty_name: ReactDance prepared dataset
+language:
+- en
+tags:
+- dance
+- motion-generation
+- reactdance
+---
+
+# ReactDance prepared dataset
+
+Minimal prepared data for [ReactDance: Hierarchical Representation for High-Fidelity and Coherent Long-Form Reactive Dance Generation (ICLR 2026)](https://github.com/RipeMangoBox/ReactDance).
+
+Download `ReactDance_data_lazy_minimal.zip` and extract it at the root of the ReactDance code repository:
+
+```bash
+unzip ReactDance_data_lazy_minimal.zip
+```
+
+The ZIP includes all available paired position motions (133 train pairs and 34 test pairs), precomputed music features, test-set MP3s for visualization, and the three dataset normalizers:
+
+- `data_lazy/motion/pos3dl_normalizer.pt`
+- `data_lazy/motion/pos3df_normalizer.pt`
+- `data_lazy/music/music_normalizer.pt`
+
+These normalizers describe the input data and should be kept. Checkpoint-dependent HFSQ latent normalizers are excluded and are calculated from the configured HFSQ checkpoint when needed.
+
+WAVs, training MP3s, unused rot6d data, SMPL-X model files, redundant features/audio splits, evaluation caches, and pre-rendered GT videos are omitted. Training uses the supplied music features. Test MP3s remain in both `data_lazy/music/mp3/all` and `data_lazy/music/mp3/test` for the existing visualization paths.
+
+The prepared data follows the [Duolando](https://github.com/lisiyao21/Duolando) processing pipeline. Refer to the source project for the original dataset and its usage terms.
+
+## Integrity
+
+ZIP size: **511,884,543 bytes** (about 488.2 MiB).
+
+SHA-256:
+
+```text
+8f815d04a0ad03ddfe5370750714f77374a7e6632af8f658a049c7b080fa06ff
+```
+
+The accompanying `.sha256` file can be checked with:
+
+```bash
+sha256sum -c ReactDance_data_lazy_minimal.zip.sha256
+```
+
+See the [code repository](https://github.com/RipeMangoBox/ReactDance) for installation, training, inference, evaluation, and citation.

ReactDance_data_lazy_minimal.zip.sha256

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+8f815d04a0ad03ddfe5370750714f77374a7e6632af8f658a049c7b080fa06ff  ReactDance_data_lazy_minimal.zip