| # bigann-1b-batch-update-eval |
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| Batch-update evaluation workload package generated from `Odeinjul/bigann-1b-static-search-eval`. |
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| ## Dataset |
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| - Source static dataset: `Odeinjul/bigann-1b-static-search-eval` |
| - Vector count: `1,000,000,000` |
| - Dimension: `128` |
| - Dtype: `uint8` |
| - Metric: `l2` |
| - Initial update index: `800,000,000` vectors with external labels equal to `A = P[0:800M]` |
| - Update order: `update_order.u32`, a seed-`42` permutation of source IDs `[0, 1B)` |
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| ## Traces |
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| - `insert-20`: starts from `A`, then inserts `P[800M:1B]` in twenty `10,000,000`-vector batches. |
| - `delete-20`: starts from the static `1B` state, then deletes `P[800M:1B]` in twenty `10,000,000`-vector batches. |
| - `mixed-replace-100`: keeps `800M` live vectors for 100 rounds; each round deletes a cyclic `10,000,000` source-ID slice and inserts a cyclic vector-ref slice. Insert external IDs use existing `P[800M:1B]` labels for the first `20` rounds, then new labels in `[1,000,000,000, 1,800,000,000)`. |
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| Batch JSON files use compact descriptors (`range`, `u32_slice`, and `u32_cyclic_slice`) instead of inline million-ID arrays. |
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| ## Ground Truth |
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| Checkpoint ground truth is produced by filtering the static source ground truth in source-distance order through the checkpoint owner map. Files are exact top-10 only when every query retains at least 10 active candidates from the static source GT depth. If a checkpoint cannot provide top-10 for every query, the package writes a matching `.invalid.json` marker instead of padding. |
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| ## Files |
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| - `workload.json`: workload contract. |
| - `static-workload-reference.json`: immutable static-search-eval references. |
| - `source_manifest.json`: generation manifest. |
| - `update_order.u32`: seed-42 source-ID permutation. |
| - `initial/index_800m_m32_efc500`: HNSW index built from `base[A]` with labels `A`. |
| - `groundtruth/active_800m.bin`: initial `800M` checkpoint GT, or `active_800m.invalid.json`. |
| - `traces/*/trace.json`: trace metadata. |
| - `traces/*/batches/*.json`: compact batch descriptors. |
| - `traces/*/groundtruth/*`: checkpoint GT or invalid markers. |
| - `checksums.sha256`: checksums for generated package files. |
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| PQ artifacts from the static dataset are referenced but not reordered into this first package version. |
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