snapshot 2026-05-19 (initial v1.0.0)

README.md

@@ -1,3 +1,115 @@
 ---
 license: cc-by-4.0
+language:
+  - en
+pretty_name: codeofpaper — paper ↔ code graph
+size_categories:
+  - 100K<n<1M
+tags:
+  - papers-with-code
+  - reproducibility
+  - github
+  - arxiv
+  - research-software
+configs:
+  - config_name: papers
+    data_files: papers.parquet
+  - config_name: repositories
+    data_files: repositories.parquet
+  - config_name: paper_repositories
+    data_files: paper_repositories.parquet
+  - config_name: repository_forks
+    data_files: repository_forks.parquet
 ---
+
+# codeofpaper — paper ↔ code graph
+
+A high-precision dataset linking research papers (arXiv, OpenReview) to their
+**official** and **high-confidence community** GitHub implementations, plus
+the full fork lineage for those repositories. Built by the
+[codeofpaper](https://codeofpaper.com) project as a community successor to
+the discontinued Papers with Code.
+
+**Snapshot date:** 2026-05-19
+**Schema version:** 1.0.0
+**License:** CC-BY-4.0 (metadata aggregation + derived tier labels).
+Underlying paper texts and repository code remain under their own licenses;
+this dataset only ships identifiers, URLs, and structured metadata.
+
+## What's different from Papers with Code
+
+- **Tiered repo links** — every edge is classified as `official` or
+  `high_confidence_community` by a reproducible, open classifier (see
+  [tier_evidence](https://github.com/isagelswann/codeofpaper/blob/main/docs/features/PHASE_0C_SPOT_CHECK.md)
+  for the rubric). Lower-confidence edges (`possible_match`) are intentionally
+  excluded from the published snapshot.
+- **Fork lineage** — `repository_forks` covers ~1.5M fork edges across ~89k
+  parent repos, enabling research-fork discovery (hardware ports, quantization
+  variants, lab extensions) that PWC never surfaced.
+- **Engineering metadata** — `repositories.framework`, `license_spdx`,
+  `engineering_fields_evidence` (JSONB) carry the signals our tier classifier
+  consumes.
+
+## Files
+
+| File | Rows | Description |
+|------|------|-------------|
+| `papers.parquet` | 244,180 | Paper metadata (arXiv / OpenReview / DOI). |
+| `repositories.parquet` | 59,296 | Non-blocklisted GitHub repos linked to at least one paper. |
+| `paper_repositories.parquet` | 62,634 | Confident-tier edges only (`official` ∪ `high_confidence_community`). |
+| `repository_forks.parquet` | 543,340 | Fork lineage for parents in `repositories.parquet`. |
+
+## Schema notes
+
+- All `*_evidence`, `languages`, and other JSONB columns are serialized as
+  compact JSON strings (parquet doesn't natively map nested types well across
+  loaders). Parse with `json.loads()` in Python.
+- `paper_repositories.tier_evidence` documents *why* the classifier assigned a
+  tier — useful for auditing or retraining your own classifier.
+- A 90-day cutoff on `papers.published_date` is applied. The most recent
+  papers (and their newly-linked repos) intentionally aren't in this snapshot.
+
+## Quickstart
+
+```python
+from datasets import load_dataset
+
+papers = load_dataset("codeofpaper/paper-code-graph", name="papers", split="train")
+repos = load_dataset("codeofpaper/paper-code-graph", name="repositories", split="train")
+links = load_dataset("codeofpaper/paper-code-graph", name="paper_repositories", split="train")
+forks = load_dataset("codeofpaper/paper-code-graph", name="repository_forks", split="train")
+
+# Find the official implementation for a paper
+import polars as pl
+df_links = pl.from_arrow(links.data.table)
+df_repos = pl.from_arrow(repos.data.table)
+(df_links.filter(pl.col("tier") == "official")
+         .join(df_repos, left_on="repository_id", right_on="id")
+         .select(["paper_id", "full_name", "stars", "framework"]))
+```
+
+## Refresh cadence
+
+Republished monthly. Production data updates daily on
+[codeofpaper.com](https://codeofpaper.com), but the public snapshot ships
+on a 90-day delay to avoid freshness contracts.
+
+## Citation
+
+If you use this dataset, please cite:
+
+```bibtex
+@misc{codeofpaper_2026,
+  title = {codeofpaper: paper-code graph},
+  author = {codeofpaper contributors},
+  year = {2026},
+  url = {https://huggingface.co/datasets/codeofpaper/paper-code-graph},
+}
+```
+
+## Source code & methodology
+
+- Repo: <https://github.com/isagelswann/codeofpaper>
+- Tier classifier rubric: `docs/features/PHASE_0C_SPOT_CHECK.md`
+- Dataset build script: `scripts/dataset/build_hf_snapshot.py`
+- Git SHA at build time: `b7ae3a7eace01038093aff1918b9c09754dd088a`

manifest.json

@@ -0,0 +1,14 @@
+{
+  "snapshot_date": "2026-05-19",
+  "schema_version": "1.0.0",
+  "license": "CC-BY-4.0",
+  "hf_repo": "codeofpaper/paper-code-graph",
+  "git_sha": "b7ae3a7eace01038093aff1918b9c09754dd088a",
+  "cutoff_days": 90,
+  "counts": {
+    "papers": 244180,
+    "repositories": 59296,
+    "paper_repositories": 62634,
+    "repository_forks": 543340
+  }
+}

paper_repositories.parquet

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+size 997247

papers.parquet

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repositories.parquet

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+size 6043124

repository_forks.parquet

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