README.md

metadata

dataset_info:
  features:
    - name: diff
      dtype: string
    - name: message
      dtype: string
    - name: reasoning_trace
      dtype: 'null'
    - name: repo
      dtype: string
    - name: license
      dtype: string
    - name: language
      dtype: string
  splits:
    - name: train
      num_bytes: 57994147
      num_examples: 52173
    - name: validation
      num_bytes: 3248866
      num_examples: 2898
    - name: test
      num_bytes: 3352948
      num_examples: 2898
  download_size: 29457578
  dataset_size: 64595961
configs:
  - config_name: default
    data_files:
      - split: train
        path: data/train-*
      - split: validation
        path: data/validation-*
      - split: test
        path: data/test-*
tags:
  - code
  - commit-messages
  - conventional-commits
  - git
task_categories:
  - text-generation
license: other
language:
  - en
  - code

Committed — Conventional Commits dataset

Filtered (diff -> Conventional Commits message) pairs derived from CommitChronicle, for fine-tuning small models to write commit messages from a diff. Built by the Committed project.

Schema

Field	Type	Notes
diff	string	The code diff for a single-file change.
message	string	Normalized Conventional Commits subject line (the training target).
reasoning_trace	string | null	Reserved for v2 (reasoning distillation); always null here.
repo	string	Source repository (provenance).
license	string	Source repository's license (provenance).
language	string	Programming language, identified by file extension.

Composition

Split	Rows
train	52,173
validation	2,898
test	2,898

Languages (identified by file extension):

Language	Rows	%
TypeScript	6,000	10.4%
JavaScript	6,000	10.4%
Python	6,000	10.4%
Go	6,000	10.4%
Java	6,000	10.4%
Rust	6,000	10.4%
Shell	4,215	7.3%
C++	3,753	6.5%
PHP	2,708	4.7%
C	2,407	4.2%
C#	2,146	3.7%
Swift	2,129	3.7%
Kotlin	1,812	3.1%
Dart	1,370	2.4%
Ruby	750	1.3%
Elixir	679	1.2%

Commit types:

Type	Rows	%
fix	28,366	48.9%
feat	7,706	13.3%
chore	5,959	10.3%
test	5,214	9.0%
refactor	5,055	8.7%
docs	2,482	4.3%
ci	1,336	2.3%
style	868	1.5%
build	562	1.0%
perf	421	0.7%

How it was built

Starting from CommitChronicle, a commit is kept only if:

• the subject line matches a relaxed Conventional Commits pattern (feat|fix|refactor|docs|test|chore|perf|style|build|ci, optional scope, optional breaking !), then normalized (lowercase type, doc -> docs, strip !, subject line only, trim, strip one trailing period);
• the subject is 5-200 characters;
• it touches exactly one file, and that file is a recognized code file by extension (the per-repo language attribute is ignored because it mislabels polyglot repos);
• it is not a merge, revert, or bot commit (e.g. Dependabot, detected by message pattern);
• the diff is at most 2048 tokens (Qwen3-1.7B tokenizer); over-cap diffs are dropped, not truncated.

The pool is then balanced (each language capped to 6,000 rows, languages with fewer than 500 rows dropped) and split 90/5/5 train/validation/test, stratified by commit type so each split preserves the type distribution.

Provenance & license

Each row keeps its source repo and license. CommitChronicle aggregates permissively-licensed repositories (MIT, Apache-2.0, BSD-3-Clause); this derivative is redistributed under those source terms. Please cite CommitChronicle and its paper:

Eliseeva et al., From Commit Message Generation to History-Aware Commit Message Generation, arXiv:2308.07655.

Known limitations

• The source scan covered ~85-90% of CommitChronicle's train split, not a full pass, so the language mix is near-complete rather than exhaustive.
• Commit types are imbalanced (fix is the plurality); a trivial always-predict-fix baseline scores around its share, so read prefix-accuracy against that floor.
• Description casing is not normalized (acronyms are preserved) — an accepted v1 limitation.
• No automated scrubbing of secrets/PII; the sensitive-data caveat from CommitChronicle is carried forward.