| --- |
| license: mit |
| tags: |
| - arxiv |
| - metadata |
| --- |
| |
| # ResearchIT metadata sidecar |
|
|
| A read-only SQLite mirror of the ResearchIT `papers` table (1,597,097 arXiv |
| papers), carrying the indexes the upstream Turso database does not have. |
|
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| Consumed by [ResearchIT](https://huggingface.co/spaces/siddhm11/ResearchIT); |
| the Dockerfile downloads `metadata.sqlite` at image build time. |
|
|
| ## Why |
|
|
| Turso has a single index (`arxiv_id`), so it serves point lookups quickly and |
| everything else via a full scan of 1.6M rows. Measured: |
|
|
| | query | Turso | sidecar | |
| |---|---|---| |
| | metadata for 50 ids | ~1,200 ms | 0.5 ms | |
| | trending by category | ~15,000 ms | 45 ms | |
| | `MIN/MAX(update_date)` | times out (>100 s) | 50 ms | |
|
|
| ## Schema |
|
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| - `papers` — arxiv_id, title, authors, abstract_preview, categories, |
| primary_topic, update_date, citation_count, influential_citations |
| - `paper_categories` — one row per (paper, arXiv code); 2,953,666 rows across |
| 176 codes. Indexed on `(code, citation_count DESC)` and |
| `(code, update_date DESC)`. |
|
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| Coverage: `update_date` spans 2007-05-23 to 2025-05-30. |
|
|
| Rebuild with `scripts/build_metadata_sidecar.py` in the ResearchIT repo. |
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|
