# Challenge 2026 Dataset

This dataset provides training/evaluation data for the 2026 Global Humanoid Robot Challenge Simulation Competition.

**Data Format**: LeRobot v3.0

## Directory Structure

```
Part_Sorting/                        - Desktop Fine-Grained Part Sorting
├── data/
├── meta/
├── videos/

Packing_Box/                         - Carton Sealing and Packing
├── data/
├── meta/
├── videos/

Foam_Inlaying/                       - Precise Part Assembly
├── data/
├── meta/
├── videos/

Conveyor_Sorting/                      - Conveyor Sorting
├── data/
├── meta/
├── videos/
```

## Dataset Overview

- **Desktop Fine-Grained Part Sorting**
  - `Part_Sorting`: 3000 episodes

- **Carton Sealing and Packing**
  - `Packing_Box`: 1367 episodes

- **Foam Inlaying**
  - `Foam_Inlaying`: 539 episodes

- **Covert Sorting**
  - `Conveyor_Sorting`: 1064 episodes

## Data Format

Each dataset contains multiple episodes stored in Parquet format:

**LeRobot v3.0** (e.g., `part_sorting_long_756_episode`, `Packing_Box`, `Foam_Inlaying`, `Conveyor_Sorting`):
```
{dataset_name}/data/chunk-000/file-XXX.parquet
```
- Data filename: `file-{file_index}.parquet`

- Dataset ID format: `{action}_{description}` (e.g., `part_sorting_long_756_episode`)

Field definitions can be found in the main project at `lerobot/common/policies/utils.py` under observation/action definitions.

## Hugging Face Download

### Method 1: Hugging Face CLI

```bash
# Install HF CLI
powershell -ExecutionPolicy ByPass -c "irm https://hf.co/cli/install.ps1 | iex"

# Login
hf auth login

# Download
hf download UBTECH-Robotics/challenge2026_dataset
```

### Method 2: Python

```python
from huggingface_hub import login, snapshot_download

# Login
login()

# Download
snapshot_download(
    repo_id="UBTECH-Robotics/challenge2026_dataset",
    repo_type="dataset"
)
```

### Method 3: Git + Git-XET

```bash
# Install git-xet
git xet install

# Clone (HTTPS)
git clone https://huggingface.co/UBTECH-Robotics/challenge2026_dataset

# Or use SSH
git clone git@hf.co:UBTECH-Robotics/challenge2026_dataset
```

## Dataset Naming Convention

| Level | Format | Example |
|-------|--------|---------|
| Task | / | `Packing_Box` |
| Dataset Directory | `{task_name}/` or `{action}_{description}/` | `Packing_Box/`, `Foam_Inlaying/`, `Conveyor_Sorting/`, `part_sorting_long_756_episode/` |
| Data File | `file-{index}.parquet` | `file-000.parquet` |