Create README.md

README.md

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+---
+license: cc-by-4.0
+task_categories:
+  - visual-question-answering
+  - image-to-text
+language:
+  - en
+tags:
+  - spatial-reasoning
+  - 3d-scenes
+  - vision-language
+  - benchmark
+size_categories:
+  - 10K<n<100K
+---
+# Theory of Space： Visual Scene Dataset
+
+This dataset provides pre-rendered 3D multi-room environments for evaluating spatial reasoning in Vision Language Models (VLMs). It is designed to support the **Theory of Space (ToS)** benchmark, which tests whether foundation models can actively construct spatial beliefs through exploration.
+
+**Paper**: Theory of Space: Can foundation models construct spatial beliefs through active perception?  
+**Project Page**: https://theory-of-space.github.io  
+**GitHub Repository**: https://github.com/williamzhangNU/Theory-of-Space
+
+## Dataset Overview
+
+| Property | Value |
+|----------|-------|
+| Rooms | 3 |
+| Total Runs | 100 |
+| Objects per Room | 4 |
+| Includes False-Belief Data | Yes |
+
+## Usage
+
+Download via Hugging Face CLI:
+
+```bash
+huggingface-cli download MLL-Lab/tos-data --repo-type dataset --local-dir room_data
+```
+
+Or use the ToS setup script which downloads automatically:
+
+```bash
+git clone https://github.com/williamzhangNU/Theory-of-Space.git
+cd Theory-of-Space
+source setup.sh
+```
+
+Refer to the [GitHub repository](https://github.com/williamzhangNU/Theory-of-Space) for evaluation instructions.
+
+## File Structure
+
+```
+tos-data/
+└── runXX/                              # 100 runs (run00 - run99)
+    ├── meta_data.json                  # Scene metadata (layout, objects, positions)
+    ├── falsebelief_exp.json            # False-belief experiment data
+    ├── top_down.png                    # Top-down view of the scene
+    ├── top_down_annotated.png          # Annotated top-down view
+    ├── top_down_fbexp.png              # Top-down view (false-belief state)
+    ├── agent_facing_*.png              # Agent perspective images (north/south/east/west)
+    ├── <object_id>_facing_*.png        # Object/door camera views
+    ├── *_fbexp.png                     # False-belief experiment images
+    └── top_down/
+        └── img_0000.png                # Additional top-down renders
+```
+
+## File Descriptions
+
+| File | Description |
+|------|-------------|
+| `meta_data.json` | Complete scene metadata including room layout, object positions, orientations, and connectivity |
+| `falsebelief_exp.json` | Specifies object modifications (move/rotate) for belief update evaluation |
+| `agent_facing_*.png` | Egocentric views from agent's perspective in 4 cardinal directions |
+| `<object_id>_facing_*.png` | Views from each object/door position |
+| `*_fbexp.png` | Images rendered after false-belief modifications |
+| `top_down*.png` | Bird's-eye view for visualization and debugging |
+
+