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license: gpl-3.0
tags:
- MatPL
- NEP
- machine-learning-potential
- materials-science
- pwmat
- pwmlff
- extxyz
language:
- en
---
<p align="center">
<strong>
<span style="font-size: 30px;">NEP</span>
</strong>
</p>
## Dataset Description
The NEP dataset provides example data for training materials potentials with `OneScience-Group/NEP`. It includes several materials systems, such as AuAg, Cu, HfO2, and LiSiC, in `pwmat/movement`, `pwmlff/npy`, and `extxyz` formats. The dataset contains atomic coordinates, cell information, energies, and forces for different configurations of these systems. It is intended as a standard benchmark for learning and validating machine-learning interatomic potential methods, including NEP.
The current package contains approximately 636 data and metadata files totaling about 38 MB.
## Supported Tasks
This standardized data repository packages the complete official MatPL examples for four materials systems. It can be used for:
- Training and validating machine-learning interatomic potentials
- Fitting potential energy surfaces for materials simulations
- Functional testing and benchmarking of the NEP framework
## Dataset Formats and Structure
Data files are stored under `data/MatPL/` and grouped by materials system:
| Path | Format | Shape/content | Description |
| --- | --- | --- | --- |
| `data/MatPL/AuAg/AuAg-5762.xyz` | extxyz | `[N_frames, N_atoms]` | Configurations for the AuAg system |
| `data/MatPL/Cu/pwdata/0_300_MOVEMENT` | pwmat/movement | `[N_frames, N_atoms]` | Cu training data at 300 K |
| `data/MatPL/Cu/pwdata/1_500_MOVEMENT` | pwmat/movement | `[N_frames, N_atoms]` | Cu training data at 500 K |
| `data/MatPL/Cu/pwdata/valid_movement` | pwmat/movement | `[N_frames, N_atoms]` | Cu validation data |
| `data/MatPL/HfO2/pwdata/init_*/train/atom_type.npy` | npy | `[N_atoms]` | Atomic species for the HfO2 system |
| `data/MatPL/HfO2/pwdata/init_*/train/energies.npy` | npy | `[N_frames]` | Total configuration energies for the HfO2 system |
| `data/MatPL/HfO2/pwdata/init_*/train/forces.npy` | npy | `[N_frames, N_atoms×3]` | Atomic forces for the HfO2 system |
| `data/MatPL/HfO2/pwdata/init_*/train/image_type.npy` | npy | `[N_frames]` | Configuration types for the HfO2 system |
| `data/MatPL/HfO2/pwdata/init_*/train/lattice.npy` | npy | `[N_frames, 9]` | Cell matrices for the HfO2 system |
| `data/MatPL/HfO2/pwdata/init_*/train/position.npy` | npy | `[N_frames, N_atoms×3]` | Atomic coordinates for the HfO2 system |
| `data/MatPL/HfO2/pwdata/init_*/valid/` | npy | Same as above | HfO2 validation-data shards |
| `data/MatPL/LiSiC/pwdata/init_*/train/` | npy | Same as above | LiSiC training-data shards |
| `data/MatPL/LiSiC/pwdata/init_*/valid/` | npy | Same as above | LiSiC validation-data shards |
| `metadata/sha256_manifest.txt` | SHA-256 | Integrity manifest | File-integrity checksums |
## Downloading the Dataset
```bash
hf download --dataset OneScience-Group/NEP --local-dir ./data
```
## Official OneScience Resources
| Platform | OneScience Main Repository | Skills Repository |
| --- | --- | --- |
| Gitee | https://gitee.com/onescience-ai/onescience | https://gitee.com/onescience-ai/oneskills |
| GitHub | https://github.com/onescience-ai/OneScience | https://github.com/onescience-ai/oneskills |
## Limitations and License
This dataset consists of the official MatPL example data. No new samples were generated, and the original data contents were not modified.
- **Original source:** Official MatPL repository
- **Model card metadata:** `gpl-3.0`, normalized from the source `GPLv3` declaration
- **Source terms:** Before redistribution or production use, review the licensing and provenance information provided by the original MatPL data sources and the OneScience repository. These source-specific terms remain authoritative for any component with separate licensing.
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