Update dataset card with improved documentation

README.md

@@ -0,0 +1,86 @@
+---
+pretty_name: S2ORC ArXiv
+language:
+  - en
+size_categories:
+  - 1M<n<10M
+tags:
+  - s2orc
+  - arxiv
+  - scientific-papers
+  - nlp
+  - research
+task_categories:
+  - text-generation
+  - summarization
+  - feature-extraction
+---
+
+# S2ORC ArXiv
+
+A subset of the [Semantic Scholar Open Research Corpus (S2ORC)](https://github.com/allenai/s2orc) filtered to ArXiv papers. Contains 2.58 million parsed scientific papers with full text, abstracts, structured sections, figures, and citation metadata.
+
+## Dataset Summary
+
+| Statistic | Value |
+|-----------|-------|
+| Total papers | 2,579,762 |
+| Total size | ~266 GB |
+| Format | Parquet |
+| Split | `train` |
+
+## Dataset Structure
+
+### Content Fields
+
+| Field | Type | Description |
+|-------|------|-------------|
+| `title` | string | Paper title |
+| `abstract` | string | Paper abstract |
+| `text` | string | Full paper text |
+| `sections` | list | Structured sections with `title` and `content` |
+| `figures` | list | Figures with `id`, `caption`, and `content` |
+| `references` | list | References with `text` and `doi` |
+| `authors` | list | Author information |
+
+### Identifier Fields
+
+| Field | Type | Description |
+|-------|------|-------------|
+| `corpus_id` | int64 | Semantic Scholar corpus ID |
+| `external_ids` | dict | External IDs (`arxiv`, `doi`, `mag`, `acl`, `pubmed`, `dblp`, etc.) |
+
+### Source & Access Fields
+
+| Field | Type | Description |
+|-------|------|-------------|
+| `source` | dict | PDF metadata including `pdf_urls`, `pdf_sha`, and `open_access` info |
+
+## Usage
+
+```python
+from datasets import load_dataset
+
+# stream to avoid downloading 266GB
+ds = load_dataset("AlgorithmicResearchGroup/s2orc_arxiv", streaming=True, split="train")
+for paper in ds:
+    print(paper["title"], len(paper["sections"]), "sections")
+    break
+```
+
+## Related Resources
+
+- [S2ORC CS Enriched](https://huggingface.co/datasets/AlgorithmicResearchGroup/s2orc-cs-enriched) - CS subset with LLM-generated enrichments
+- [Algorithmic Research Group - Open Source](https://algorithmicresearchgroup.com/opensource.html)
+
+## Citation
+
+```bibtex
+@misc{s2orc_arxiv,
+    title={S2ORC ArXiv},
+    author={Algorithmic Research Group},
+    year={2024},
+    publisher={Hugging Face},
+    url={https://huggingface.co/datasets/AlgorithmicResearchGroup/s2orc_arxiv}
+}
+```