Tejaswiniprabhakaran19/patchpilot-localization

PatchPilot fault-localization dataset

Training data for PatchPilot's fault-localization cross-encoder (A1): pairs of a bug report and a code candidate (a file or a function), labelled 1 if the developers' fix edits that candidate.

Source

Built by scripts/build_localization_data.py (seed 42) from three public datasets by Princeton NLP:

Dataset	Used for
princeton-nlp/SWE-bench (train split)	issue text, gold patch, repository
princeton-nlp/SWE-bench_oracle (train)	contents of the files the gold patch edits
princeton-nlp/SWE-bench_bm25_27K (train)	contents of BM25-retrieved files (hard negatives)

Only the SWE-bench training split is used. Its 35 repositories are disjoint from the 12 repositories of SWE-bench Lite (our evaluation set).

Leakage check

scripts/check_leakage.py compares every selected training instance, and the whole training split, with all 300 SWE-bench Lite test instances on repository, instance id, normalised issue text and normalised gold patch. Result (results/leakage_check.json): zero overlap on all four keys.

Construction

1. Selection: at most 400 instances per repository (seeded), so pandas (5,049 instances) does not dominate.
2. Labels: the gold patch is parsed into edited files and original-file line numbers (insertions are attributed to the preceding line); Python's ast maps those lines to the innermost enclosing function. Test files, non-Python files and newly created files are not localization targets.
3. Candidates: gold files + BM25-retrieved Python files. Functions: every function of a gold file (positives and in-file hard negatives) and up to 40 functions of each other file.
4. Text views: a file is its path plus class/function signatures and one-line docstrings (max 3,000 characters); a function is path::Qualified.name plus its source (max 2,000 characters); the query is the issue text (max 4,000 characters).
5. Splits: by repository (whole repositories go to train, validation or test), so validation and test measure generalisation to unseen codebases.

Size

From results/localization/dataset_stats.json and results/localization/dataset_function_stats.json:

Split	Repositories	Instances	File candidates (positive)	Function candidates (positive functions)	Instances with a gold function
train	26	6,329	44,665 (15,931)	824,343 (26,794)	5,378
val	5	1,020	6,382 (3,188)	125,239 (4,116)	888
test	4	1,212	7,296 (3,263)	208,766 (6,066)	1,107

• Validation repositories: huggingface/transformers, open-mmlab/mmdetection, pypa/pip, scipy/scipy, tiangolo/fastapi. Test repositories: apache/airflow, conda/conda, explosion/spaCy, mesonbuild/meson. No repository appears in more than one split.
• Of the 8,867 selected instances, 101 do not appear in SWE-bench_oracle's train split and 205 edit no existing non-test Python file; the remaining 8,561 were built.
• Median candidates per instance: 5-6 files and 91-112 functions.
• Module-level edits: an edited line outside any function (imports, class attributes, new top-level code) is labelled path::<module> (10,268 / 2,073 / 2,000 such labels in train / val / test). No candidate is ever a whole module, so these labels are excluded from function-level scoring (function_targets()); 951 / 132 / 105 instances only edit module-level code and are therefore scored at file level only. The positive_functions field of dataset_stats.json counts these labels too.

Format

{train,val,test}.jsonl.gz, one JSON object per instance:

{"instance_id": "...", "repo": "owner/name", "split": "train", "query": "issue text",
 "gold_files": ["pkg/mod.py"], "gold_units": ["pkg/mod.py::Class.method"],
 "files": [{"cid": "pkg/mod.py", "text": "skeleton", "label": 1}, ...],
 "units": [{"cid": "pkg/mod.py::Class.method", "text": "source", "label": 1}, ...]}

Limitations

• Python only; issue text only (no failing-test output, unlike PatchPilot's agent at run time).
• BM25 candidates come from the SWE-bench 27K-token retrieval, so a file's negatives are capped by what fit in that context.
• Labels mark what the developers edited; a different correct fix could edit other places.

Licence

Derived from SWE-bench (MIT). The underlying code belongs to the respective open-source projects under their own licences.