---
license: other
#User-Defined Tags
tags:
  - chr
  - mini dataset
language:
  - en
  - zh
---
<p align="center">
  <strong>
    <span style="font-size: 30px;">Evo2 Dataset</span>
  </strong>
</p>

## Dataset Description

Evo2 Dataset is an Evo2 mini genome dataset adapted for `OneScience/evo2/`. It contains FASTA, compressed FASTA, and merged FASTA files for human chr20, chr21, and chr22, as well as train, validation, and test `.bin/.idx` splits preprocessed with the Byte-Level tokenizer.

## Supported Tasks

This dataset is not the complete OpenGenome2 dataset and is not intended to reproduce full-scale pretraining. It is intended for preflight checks of the standard Evo2 model repository, FASTA prediction input, and smoke tests for mini training or fine-tuning.

## Dataset Format and Structure

| Data | Format | Description |
|---|---|---|
| Raw sequences | FASTA / gzip FASTA | chr20, chr21, chr22, and merged FASTA |
| Preprocessed training split | `.bin` + `.idx` | `chr20_21_22_uint8_distinct_byte-level_train` |
| Preprocessed validation split | `.bin` + `.idx` | `chr20_21_22_uint8_distinct_byte-level_val` |
| Preprocessed test split | `.bin` + `.idx` | `chr20_21_22_uint8_distinct_byte-level_test` |
| Checksum manifest | TSV / SHA256 | File names, sizes, and hashes |

The default location within the dataset package is `data_mini/genome_data/`.

## How to Use the Dataset

### Files and Download

Download the dataset:
```bash
hf download --dataset OneScience-Group/evo2_dataset
```
Model weights must be downloaded separately to validate the model:
```bash
hf download --model OneScience-Group/evo2/
```
### Data Placement and Validation

Default model data path:

```text
<MODEL_REPO_ROOT>/data/evo2_dataset/data_mini/genome_data/
```

Place `data_mini` in the model package:

```bash
mkdir -p <MODEL_REPO_ROOT>/data/evo2_dataset
cp -a data_mini <MODEL_REPO_ROOT>/data/evo2_dataset/data_mini
```

Validation command:

```bash
python scripts/validate_evo2_dataset.py --package-root . --dataset-root data_mini
```

For a quick structure-only check, add `--skip-sha256`.

## Official OneScience Information

| 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

Repository license: Apache-2.0
Data license: LicenseRef-UCSC-hg38-public-use
Data source: UCSC hg38 / GRCh38, chromosomes 20, 21 and 22
Note: Derived bin/idx files follow the source genome data terms.