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--- |
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license: other |
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task_categories: |
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- feature-extraction |
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tags: |
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- vector-search |
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- diskann |
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- nearest-neighbor |
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- benchmark |
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pretty_name: SIFT1B - Sharded DiskANN Indices |
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size_categories: |
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- 1B<n<10B |
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--- |
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# SIFT1B - Sharded DiskANN Indices |
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Pre-built DiskANN indices for the SIFT1B (BigANN) dataset, sharded for distributed vector search. |
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## Dataset Info |
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- **Source**: [BigANN Benchmarks](http://big-ann-benchmarks.com/) |
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- **Vectors**: 1,000,000,000 (1 billion) |
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- **Dimensions**: 128 |
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- **Data type**: uint8 |
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- **Queries**: 10,000 |
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- **Distance**: L2 |
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## DiskANN Parameters |
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- **R** (graph degree): 64 |
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- **L** (build beam width): 100 |
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- **PQ bytes**: 32 |
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## Shard Configurations |
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- **shard_2**: 2 shards x 500,000,000 vectors |
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- **shard_3**: 3 shards x ~333,333,333 vectors |
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- **shard_5**: 5 shards x 200,000,000 vectors |
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- **shard_7**: 7 shards x ~142,857,142 vectors |
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- **shard_10**: 10 shards x 100,000,000 vectors |
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## File Structure |
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``` |
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fbin/ |
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base.u8bin # Base vectors (1B x 128 uint8) |
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queries.u8bin # Query vectors (10K x 128 uint8) |
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diskann/ |
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gt_100.bin # Ground truth (100-NN) |
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shard_N/ # N-shard configuration |
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sift1b_64_100_32.shardX_disk.index # DiskANN disk index |
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sift1b_64_100_32.shardX_disk.index_512_none.indices # MinIO graph indices |
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sift1b_64_100_32.shardX_disk.index_base_none.vectors # MinIO vector data |
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sift1b_base.shardX.fbin # Shard base data |
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``` |
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### Chunked Files |
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Files larger than 49 GB are split into chunks for upload: |
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- `*_512_none.indices.part00`, `.part01`, etc. |
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- `*_base_none.vectors.part00`, etc. (if applicable) |
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- `fbin/base.u8bin.part00`, etc. |
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To reassemble: `cat file.part00 file.part01 ... > file` |
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## Usage |
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### Download with huggingface_hub |
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```python |
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from huggingface_hub import hf_hub_download |
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# Download a specific shard file |
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index = hf_hub_download( |
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repo_id="maknee/sift1b", |
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filename="diskann/shard_10/sift1b_64_100_32.shard0_disk.index", |
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repo_type="dataset" |
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) |
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``` |
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### Download with git-lfs |
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```bash |
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git lfs install |
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git clone https://huggingface.co/datasets/maknee/sift1b |
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``` |
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## License |
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Same as source dataset (BigANN Benchmarks). |
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