README.md

---
task_categories:
- reinforcement-learning
- robotics
tags:
- robotics
- libero
- manipulation
- semantic-action-chunking
- vision-language
- imitation-learning
size_categories:
- 100K<n<1M
---

# GATE-VLAP Datasets

**Grounded Action Trajectory Embeddings with Vision-Language Action Planning**

This repository contains preprocessed datasets from the LIBERO benchmark suite in WebDataset TAR format, specifically designed for training vision-language-action models with semantic action segmentation.

## Data Format: WebDataset TAR

We provide datasets in **WebDataset TAR format** for optimal performance:

✅ **Fast loading** - Efficient streaming during training  
✅ **Easy downloading** - Single file per subtask  
✅ **HuggingFace optimized** - Quick browsing and file listing  
✅ **Inspectable** - Extract locally to view individual frames

### Extracting TAR Files

```bash
# Download a subtask
wget https://huggingface.co/datasets/gate-institute/GATE-VLAP-datasets/resolve/main/libero_10/pick_up_the_black_bowl.tar

# Extract all files
tar -xf pick_up_the_black_bowl.tar

# View structure
ls
# Output: demo_0/  demo_1/  demo_2/  ...

# View demo contents
ls demo_0/
# Output: demo_0_timestep_0000.png  demo_0_timestep_0000.json
#         demo_0_timestep_0001.png  demo_0_timestep_0001.json
#         ...
```

### Loading Raw Data (After Extraction)

```python
from pathlib import Path
import json
from PIL import Image
import numpy as np

def load_demo(demo_dir):
    """Load a single demonstration from extracted TAR."""
    frames = []
    demo_path = Path(demo_dir)
    
    for json_file in sorted(demo_path.glob("*.json")):
        # Load metadata
        with open(json_file) as f:
            data = json.load(f)
        
        # Load image
        png_file = json_file.with_suffix(".png")
        data["image"] = np.array(Image.open(png_file))
        
        frames.append(data)
    
    return frames

# After extracting pick_up_the_black_bowl.tar
demo = load_demo("demo_0")
print(f"Demo length: {len(demo)} frames")
print(f"Action shape: {demo[0]['action']}")
```

### Loading with WebDataset (Direct Streaming)

```python
import webdataset as wds
from PIL import Image
import json

# Stream data directly from HuggingFace (no download needed!)
url = "https://huggingface.co/datasets/gate-institute/GATE-VLAP-datasets/resolve/main/libero_10/pick_up_the_black_bowl.tar"

dataset = wds.WebDataset(url).decode("rgb")

for sample in dataset:
    # sample["png"] = PIL Image (128x128 RGB)
    # sample["json"] = bytes (JSON metadata)
    metadata = json.loads(sample["json"])
    image = sample["png"]
    
    print(f"Action: {metadata['action']}")
    print(f"Image shape: {np.array(image).shape}")
    break
```

### Training with Multiple Subtasks

```python
import webdataset as wds
import torch
from torch.utils.data import DataLoader

# Load multiple subtasks at once
base_url = "https://huggingface.co/datasets/gate-institute/GATE-VLAP-datasets/resolve/main/libero_10/"
subtasks = ["pick_up_the_black_bowl", "close_the_drawer", "open_the_top_drawer"]
urls = [f"{base_url}{task}.tar" for task in subtasks]

dataset = (
    wds.WebDataset(urls)
    .decode("rgb")
    .to_tuple("png", "json")
    .map(preprocess_fn)  # Your preprocessing function
)

dataloader = DataLoader(dataset, batch_size=32, num_workers=4)

for images, actions in dataloader:
    # Train your model
    pass
```

## Datasets Included

### LIBERO-10 (Long-Horizon Tasks)

- **Task Type**: 10 complex, long-horizon manipulation tasks
- **Segmentation Method**: Semantic Action Chunking using Gemini Vision API
- **Demos**: 1,354 demonstrations across 29 subtasks
- **Frames**: 103,650 total frames
- **TAR Files**: 29 files (one per subtask)

**Example Tasks**:
- `pick_up_the_black_bowl.tar` → Pick and place subtasks
- `close_the_drawer.tar` → Approach, grasp, close subtasks
- `put_the_bowl_in_the_drawer.tar` → Multi-step pick, open, place, close sequence

### LIBERO-Object (Object Manipulation)

- **Task Type**: 10 object-centric manipulation tasks  
- **Segmentation Method**: Semantic Action Chunking using Gemini Vision API
- **Demos**: 875 demonstrations across 20 subtasks
- **Frames**: 66,334 total frames
- **TAR Files**: 20 files (one per subtask)

**Example Tasks**:
- `pick_up_the_alphabet_soup.tar` → Approach, grasp, lift
- `place_the_alphabet_soup_on_the_basket.tar` → Move, position, place, release

## 📁 Dataset Structure

```
gate-institute/GATE-VLAP-datasets/
├── libero_10/                          # Long-horizon tasks (29 TAR files)
│   ├── close_the_drawer.tar
│   ├── pick_up_the_black_bowl.tar
│   ├── open_the_top_drawer.tar
│   └── ... (26 more)
│
├── libero_object/                      # Object manipulation (20 TAR files)
│   ├── pick_up_the_alphabet_soup.tar
│   ├── place_the_alphabet_soup_on_the_basket.tar
│   └── ... (18 more)
│
└── metadata/                           # Dataset statistics & segmentation
    ├── libero_10_complete_stats.json
    ├── libero_10_all_segments.json
    ├── libero_object_complete_stats.json
    └── libero_object_all_segments.json
```

### Inside Each TAR File

After extracting `pick_up_the_black_bowl.tar`:

```
pick_up_the_black_bowl/
├── demo_0/
│   ├── demo_0_timestep_0000.png        # RGB observation (128×128)
│   ├── demo_0_timestep_0000.json       # Action + metadata
│   ├── demo_0_timestep_0001.png
│   ├── demo_0_timestep_0001.json
│   └── ...
├── demo_1/
│   └── ...
└── ... (all demos for this subtask)
```

## Data Format

### JSON Metadata (per timestep)

Each `.json` file contains:

```json
{
  "action": [0.1, -0.2, 0.0, 0.0, 0.0, 0.0, 1.0],  // 7-DOF action
  "robot_state": [...],                             // Joint state
  "demo_id": "demo_0",
  "timestep": 42,
  "subtask": "pick_up_the_black_bowl",
  "parent_task": "LIBERO_10",
  "is_stop_signal": false                           // Segment boundary
}
```

### Action Space

- **Dimensions**: 7-DOF
  - `[0:3]`: End-effector position delta (x, y, z)
  - `[3:6]`: End-effector orientation delta (roll, pitch, yaw)  
  - `[6]`: Gripper action (0.0 = close, 1.0 = open)
- **Range**: Normalized to [-1, 1]
- **Control**: Delta actions (relative to current pose)

### Image Format

- **Resolution**: 128×128 pixels
- **Channels**: RGB (3 channels)
- **Format**: PNG (lossless compression)
- **Camera**: Front-facing agentview camera

## Metadata Files Explained

### 1. `libero_10_complete_stats.json`

**Purpose**: Overview statistics for the entire LIBERO-10 dataset

**Use Cases**: 
- Understand dataset composition
- Plan training splits
- Check demo/frame distribution across tasks

### 2. `libero_10_all_segments.json`

**Purpose**: Detailed segmentation metadata for each demonstration

Contains semantic action chunks with:
- Segment boundaries (start/end frames)
- Action descriptions
- Segment types (reach, grasp, move, place, etc.)
- Gemini Vision API segmentation method

**Use Cases**:
- Train with semantic action chunks
- Implement hierarchical policies  
- Analyze action primitives
- Filter by segment type

### 3. `libero_object_complete_stats.json`

**Purpose**: Statistics for LIBERO-Object dataset

### 4. `libero_object_all_segments.json`

**Purpose**: Segmentation for LIBERO-Object demonstrations with semantic action chunking

## Citation

If you use this dataset, please cite:

```bibtex
@article{gateVLAP@SAC2026,
  title={Atomic Action Slicing: Planner-Aligned Options for Generalist VLA Agents},
  author={Stefan Tabakov, Asen Popov, Dimitar Dimitrov, Ensiye Kiyamousavi and Boris Kraychev},
  journal={arXiv preprint arXiv:XXXX.XXXXX},
  conference={The 41st ACM/SIGAPP Symposium On Applied Computing (SAC2026), track on Intelligent Robotics and Multi-Agent Systems (IRMAS)},
  year={2025}
}

@inproceedings{liu2023libero,
  title={LIBERO: Benchmarking Knowledge Transfer for Lifelong Robot Learning},
  author={Liu, Bo and Zhu, Yifeng and Gao, Chongkai and Feng, Yihao and Liu, Qiang and Zhu, Yuke and Stone, Peter},
  booktitle={NeurIPS Datasets and Benchmarks Track},
  year={2023}
}
```

## Related Resources

- **Model Checkpoints**: [gate-institute/GATE-VLAP](https://huggingface.co/gate-institute/GATE-VLAP)
- **Original LIBERO**: [https://github.com/Lifelong-Robot-Learning/LIBERO](https://github.com/Lifelong-Robot-Learning/LIBERO)
- **Paper**: Coming soon

## Acknowledgments

- **LIBERO Benchmark**: Original dataset by Liu et al. (2023)
- **Segmentation**: Gemini Vision API for semantic action chunking
- **Institution**: [GATE Institute](https://www.gate-ai.eu/en/home/), Sofia, Bulgaria

## Contact

For questions or issues, please contact the [GATE Institute](https://www.gate-ai.eu/en/home/).

---

**Dataset Version**: 1.0  
**Last Updated**: December 2025  
**Maintainer**: [GATE Institute](https://www.gate-ai.eu/en/home/)