Publish the source multi-hop QA corpora used by ToolForge

README.md

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+---
+license: apache-2.0
+task_categories:
+  - question-answering
+  - text-generation
+language:
+  - en
+tags:
+  - multi-hop-qa
+  - tool-calling
+  - agent
+  - data-synthesis
+pretty_name: ToolForge Source QA
+size_categories:
+  - 100K<n<1M
+configs:
+  - config_name: bridge_hp
+    data_files: original_data/HotpotQA/bridge_hp.parquet
+  - config_name: comparison_hp
+    data_files: original_data/HotpotQA/comparison_hp.parquet
+  - config_name: bridge_comparison_wiki
+    data_files: original_data/2WikiMultihopQA/bridge_comparison_wiki.parquet
+  - config_name: comparison_wiki
+    data_files: original_data/2WikiMultihopQA/comparison_wiki.parquet
+  - config_name: compositional_wiki
+    data_files: original_data/2WikiMultihopQA/compositional_wiki.parquet
+  - config_name: inference_wiki
+    data_files: original_data/2WikiMultihopQA/inference_wiki.parquet
+---
+
+# ToolForge — Source QA
+
+The multi-hop question answering corpora that **[ToolForge](https://github.com/Buycar-arb/ToolForge)**
+takes as input, in the exact slices used in the paper.
+
+📄 **Paper** — [arXiv:2512.16149](https://arxiv.org/abs/2512.16149)
+💻 **Code** — [github.com/Buycar-arb/ToolForge](https://github.com/Buycar-arb/ToolForge)
+
+```bash
+git clone https://github.com/Buycar-arb/ToolForge.git && cd ToolForge
+pip install -e ".[all]"
+python download_data.py
+```
+
+## Contents
+
+257,901 questions across six corpora, drawn from HotpotQA and 2WikiMultihopQA.
+
+| corpus | questions | size | question shape |
+|---|---:|---:|---|
+| `HotpotQA/bridge_hp` | 72,991 | 246.5 MB | bridge: the answer to hop 1 identifies the subject of hop 2 |
+| `HotpotQA/comparison_hp` | 17,456 | 52.5 MB | comparison: "which of X and Y…" |
+| `2WikiMultihopQA/compositional_wiki` | 76,481 | 134.9 MB | compositional: "the Z of the Y of X" |
+| `2WikiMultihopQA/comparison_wiki` | 51,963 | 92.4 MB | comparison |
+| `2WikiMultihopQA/bridge_comparison_wiki` | 34,631 | 70.8 MB | bridge *and* comparison combined |
+| `2WikiMultihopQA/inference_wiki` | 4,379 | 9.7 MB | inference over family relations |
+
+## Record schema
+
+```json
+{
+  "_id": "5a8b57f25542995d1e6f1371",
+  "question": "Were Scott Derrickson and Ed Wood of the same nationality?",
+  "answer": "yes",
+  "type": "comparison",
+  "context": [
+    ["Scott Derrickson", ["Scott Derrickson (born 1966) is an American director."]],
+    ["Ed Wood", ["Edward Davis Wood Jr. was an American director and screenwriter."]]
+  ],
+  "supporting_facts": [["Scott Derrickson", 0], ["Ed Wood", 0]]
+}
+```
+
+`supporting_facts` is what makes the pipeline work: it splits `context` into the
+passages that contain the answer and everything else. ToolForge treats the first
+as the evidence a tool call should surface, and runs BM25 over the second to
+produce realistic distractors — which is how a *failed* tool call in the
+generated data can be genuinely, plausibly unhelpful.
+
+Nested columns are stored as JSON strings so they fit in Parquet. Convert to the
+JSONL the pipeline reads with:
+
+```bash
+toolforge convert to-jsonl original_data/HotpotQA
+```
+
+## Which corpus for which dialogue shape
+
+ToolForge generates 29 dialogue cases in four families, and a corpus can only
+produce the families its questions are shaped for. Measured by sampling and
+labelling each corpus:
+
+| corpus | → A | → B | → C | → D | good for |
+|---|---:|---:|---:|---:|---|
+| `inference_wiki` | 93% | 7% | — | — | **A** |
+| `comparison_wiki` | — | 100% | — | — | **B** |
+| `comparison_hp` | 16% | 84% | — | — | A, **B** |
+| `compositional_wiki` | 13% | — | 83% | 3% | **C** |
+| `bridge_hp` | 76% | 4% | 20% | — | **A**, C |
+| `bridge_comparison_wiki` | 4% | 44% | 36% | 16% | **B, C, D** |
+
+`bridge_comparison_wiki` is the only corpus that reliably yields **D** — label
+roughly six times as much of it to get a comparable number of D samples.
+Details in [`docs/choosing-source-data.md`](https://github.com/Buycar-arb/ToolForge/blob/main/docs/choosing-source-data.md).
+
+## Citation
+
+```bibtex
+@article{chen2025toolforge,
+  title={ToolForge: A Data Synthesis Pipeline for Multi-Hop Search without Real-World APIs},
+  author={Chen, Hao and Hu, Zhexin and Chai, Jiajun and Yang, Haocheng and He, Hang and Wang, Xiaohan and Lin, Wei and Wang, Luhang and Yin, Guojun and others},
+  journal={arXiv preprint arXiv:2512.16149},
+  year={2025}
+}
+```
+
+Please also cite the original datasets:
+[HotpotQA](https://arxiv.org/abs/1809.09600) ·
+[2WikiMultihopQA](https://arxiv.org/abs/2011.01060)

original_data/2WikiMultihopQA/bridge_comparison_wiki.parquet

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