Datasets:
File size: 1,495 Bytes
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language:
- en
license: apache-2.0
task_categories:
- tabular-classification
tags:
- biology
- genomics
- variant-annotation
- ensembl
- vcf
- variants
- parquet
- bioinformatics
pretty_name: Ensembl Variations (Parquet)
size_categories:
- 10G<n<100G
---
# Ensembl Variations (Parquet Format)
This dataset contains Ensembl human genetic variations converted to Parquet format for fast and efficient VCF annotation.
## Dataset Description
- **Purpose**: Fast annotation of VCF files with Ensembl variation data
- **Format**: Apache Parquet (columnar storage)
- **Source**: [Ensembl Variation Database](https://www.ensembl.org/info/genome/variation/)
- **Updated: 2026-01-15**
- **Total Files**: 25
- **Total Size**: ~13.7 GB
## Usage
### With Polars (Recommended)
```python
import polars as pl
# Load variants for chromosome 21
df = pl.scan_parquet("hf://datasets/just-dna-seq/ensembl_variations/data/homo_sapiens-chr21.parquet")
# Filter variants by position
variants = df.filter(
(pl.col("POS") >= 10000000) & (pl.col("POS") <= 20000000)
).collect()
print(variants)
```
## License
This dataset is released under Apache 2.0 license. The original Ensembl data is available under their terms of use.
## Maintenance
This dataset is maintained by the GenoBear project.
- GitHub: [https://github.com/dna-seq/just-dna-lite](https://github.com/dna-seq/just-dna-lite)
- HuggingFace: [https://huggingface.co/just-dna-seq](https://huggingface.co/just-dna-seq)
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