Add dataset card

README.md

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+---
+license: cc-by-sa-3.0
+task_categories:
+  - question-answering
+  - text-retrieval
+language:
+  - en
+tags:
+  - wikipedia
+  - agentic-search
+  - retrieval
+  - offline-index
+pretty_name: SimpleWikiSearch
+size_categories:
+  - 10M<n<100M
+---
+
+# SimpleWikiSearch Indexes
+
+Offline Wikipedia indexes for [SimpleWikiSearch](https://github.com/JimXiongGM/simple_wiki_search) (arXiv:[2607.26070](https://arxiv.org/abs/2607.26070)).
+
+These files are **binary search indexes** (not row-oriented tables). Download and extract them locally; they are not intended for `load_dataset()`.
+
+Paper page: https://huggingface.co/papers/2607.26070
+
+## Files
+
+| Archive | Size (approx.) | Contents |
+|---------|----------------:|----------|
+| `enwiki-20260601-tantivy-chunk-1536.tar.zst` | ~22 GB | Tantivy keyword index + chunk text store |
+| `enwiki-20260601-faiss-hnsw-Qwen3-Embedding-0.6B.tar.zst` | ~19 GB | FAISS HNSW dense index (`Qwen3-Embedding-0.6B`, dim=1024, fp16) |
+
+Corpus snapshot: `enwiki-20260601` — **7,189,602** articles / **10,837,506** section-aware chunks (target 1536 tokens).
+
+## Extract
+
+```bash
+tar -I zstd -xf enwiki-20260601-faiss-hnsw-Qwen3-Embedding-0.6B.tar.zst
+tar -I zstd -xf enwiki-20260601-tantivy-chunk-1536.tar.zst
+```
+
+Expected layout:
+
+```text
+data/database/wikipedia-index/enwiki-20260601/
+  faiss/hnsw-Qwen3-Embedding-0.6B-chunk-1536-fp16/
+    index.faiss
+    ids.pkl
+  tantivy/chunk-1536/
+    chunks/
+    titles/
+```
+
+Full setup (embedding server, MCP tools, QA agent): see [deploy.md](https://github.com/JimXiongGM/simple_wiki_search/blob/main/deploy.md) in the GitHub repo.
+
+## License
+
+Wikipedia text is available under [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/). Indexes derived from that dump inherit the same license obligations.
+
+## Citation
+
+```bibtex
+@misc{xiong2026simplewikisearchcleanofflinewikipedia,
+      title={SimpleWikiSearch: A Clean Offline Wikipedia Environment for Agentic Search},
+      author={Guanming Xiong and Penghui Zhang},
+      year={2026},
+      eprint={2607.26070},
+      archivePrefix={arXiv},
+      primaryClass={cs.IR},
+      url={https://arxiv.org/abs/2607.26070},
+}
+```