Update README.md

README.md

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-license: cc-by-nc-4.0
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+---
+license: cc-by-nc-4.0
+---
+# GestureHYDRA: Semantic Co-speech Gesture Synthesis via Hybrid Modality Diffusion Transformer and Cascaded-Synchronized Retrieval-Augmented Generation.ICCV 2025
+
+
+## Dataset description
+- The Streamer dataset we proposed consists of 281 anchors and 20,969 clips of data.
+- The training set contains 19,051 clips of data and 269 anchors.
+- The seen test set contains 920 clips of data, where the anchor ID has appeared in the training set.
+- The unseen test set contains 998 clips of data, where the anchor ID has never appeared in the training set.
+
+## Dataset structure 
+The dataset contains three folders: *train*, *test_seen*, *test_unseen*. Let's *train* train as an example for introduction.
+
+```plaintext
+-train/
+├── audios/
+│   ├── {anchor_id}/
+│   │   └── {video_name_md5}/
+│   │       └── {start_time}_{end_time}.wav
+├── gestures/
+│   ├── {anchor_id}/
+│   │   └── {video_name_md5}/
+│   │       └── {start_time}_{end_time}.pkl
+```
+The audio data in the audios folder corresponds one-to-one with the human motion data in the gestures folder.
+
+
+Data contained in the pkl file:
+- width, height: the video width and height
+- center: the center point of the video
+- batch_size: the sequence length
+- camera_transl: the displacement of the camera
+- focal_length: the pixel focal length of a camera
+- body_pose_axis: (bs, 21x3)
+- jaw_pose: (bs,3)
+- betas: (1,10)
+- global_orient: (bs,3)
+- transl: (bs,3)
+- left_hand_pose: (bs,15x3)
+- right_hand_pose: (bs,15x3)
+- leye_pose: (bs,3)
+- reye_pose: (bs,3)
+- pose_embedding: (bs,32)