README.md

---
license: apache-2.0
tags:
- git
- code
size_categories:
- 10K<n<100K
---
# Dataset Summary
GitGoodBench Lite is a subset of 17469 samples for collecting trajectories of AI agents resolving git tasks (see Supported Scenarios) for model training purposes. 
We support the programming languages Python, Java and Kotlin and the sample types merge conflict resolution and file-commit chain.

All data in this dataset are collected from 816 unique, open-source GitHub repositories with permissive licenses 
that have >= 1000 stars, >= 5 branches, >= 10 contributors and are not a fork or archived. We collected the initial list of repositories using [SEART.](https://seart-ghs.si.usi.ch/)

[For further details see our paper.]()

# Supported Tasks 
GitGoodBench Lite contains two types of samples: 'merge' and 'file_commit_chain'.
It is important to note that the sample type 'file_commit_chain' can be used for two scenario types: Performing an interactive rebase to clean up the local tree or iteratively
generating commits based on the staged, uncommitted changes.

## Merge
Merge scenarios are contain one or more merge conflicts that occurred during a merge. All merge conflicts are guaranteed to be in a Python, Java or Kotlin file. There are only 
merges with exactly two parents in our dataset (no octopus merges).

A merge scenario looks as follows:
```
{
  'merge_commit_hash': '9bcf252fb11ec692dfbc152933dddd427098dcc9',
  'parents': ['5d5df76aa7df56bdbec07c18e063a1125cfd0465', '3bf663778b2a56c614818069043354d4b6d5f156'],
  'number_of_files_with_merge_conflict': 1,
  'total_number_of_merge_conflicts': 2,
  'files_in_merge_conflict': ['models/index_model.py']
}
```

Where `merge_commit_hash` contains the ground truth merge commit and the `parents` are the commits during the merge of which the conflict(s) in `files_in_merge_conflict` occurred.

## File-Commit Chain
File-commit chain scenarios consist of two commits, the oldest and newest commit. In all commits between the `oldest_commit` and `newest_commit` (inclusive) `file` was modified. 
In total the chain consists of `times_seen_consecutively` commits. The intended use-cases of these scenarios are to evaluate the agent's capacity to create meaningful, cohesive commits or 
improve the local tree via rebasing. Thus samples of this `sample_type` cover two scenario types.

File-commit chains are at least 3 commits long, the file the sample concerns itself with is guaranteed to be of `programming_language` (this is not the case for other potential files in the commits of the sample) and no commit is a merge commit.

A `file_commit_chain` scenario looks as follows:
```
{
  'file': 'torchaudio/transforms/_transforms.py',
  'branch': 'main',
  'times_seen_consecutively': 3,
  'purity': 0.69,
  'newest_commit': '7ac3e2e237e443baf91dfbf9893fca114c1c6001',
  'oldest_commit': '3742cebb7dc0f8adf24f4ee1cea368195c448f78'
}
```
`purity` indicates the relative amount of changes in the chain that occurred solely in `file` and is a heuristic for the difficulty of the scenario. We expect noisier scenarios to be more difficult.

# Dataset Structure
The following table provides per-field details. Columns marked “Yes” under **Is Metadata?** are those that provide contextual or descriptive information but are not essential to the primary scenario logic.

| **Field**                | **Type**   |  **Description**                                                                                                                                                    | **Is Metadata?** |
|--------------------------|------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------|
| **id**                   | string     |  A unique identifier for the dataset entry: <name>-<sample_type>-<running_index>                                                                              | No               |
| **name**                 | string     |  The repository name, in “owner/repository” format.                                                                                                       | No               |
| **default_branch**       | string     |  The primary or default branch for the repository.                                                                                                                   | No               |
| **license**              | string     | Repository license.                                                                                                 | Yes              |
| **stargazers**           | integer    |  The number of stars on GitHub.                                                                                                    | Yes              |
| **created_at**           | string     |  The repository creation date.                                                                                                                    | Yes              |
| **topics**               | string     |  A semicolon-delimited list of topics or tags associated with the repository.                                                                                       | Yes              |
| **programming_language** | string     |  The programming language of the sample. Possible values: "java," "python," or "kotlin."                                                                           | No               |
| **scenario**             | string     |  A JSON string describing specific scenario data (e.g., merge-conflict details, parent commits).                                                                     | No               |
| **sample_type**          | string     |  The type of sample. Possible values: "merge" or "file_commit_chain."                                                                                                | No               |
| **project_size**         | string     |  Estimated size based on lines of code. Possible values: "tiny," "small," "medium," "large," or "huge."                                                              | Yes              |
| **difficulty**           | string     |  The complexity level of the scenario. Possible values: "easy," "medium," or "hard."                                                                                 | Yes              |

**Note**:  
- Fields marked as **Is Metadata? = Yes** provide contextual information (e.g., project stats, licensing) rather than forming the core logic of a scenario.  
- Fields marked **No** represent the primary data for the scenario. Use them to inform or categorize the scenario type and project details.  

# Dataset statistics
We provide some statistics on the diversity of our dataset with respect to repositories, programming languages and merge conflict resolution samples.

## Dataset Skew

The below statistics show that our dataset does not exhibit an extreme skew towards some repositories and is relatively well balanced with respect to source repositories.

### Distribution Statistics
- Total number of repositories analyzed: 816
- Average (mean) samples per repository: 21.4
- Standard deviation (std): 48.8
- Minimum (min): 1
- 25th percentile (25%): 2
- Median (50%): 6
- 75th percentile (75%): 18
- Maximum (max): 644

### Top-10 Repositories by Sample Count

| Repository                               | Percentage of Total Samples |
|------------------------------------------|----------------------------:|
| zulip/zulip                              | 3.69%                       |
| trinodb/trino                            | 2.47%                       |
| wandb/wandb                              | 2.46%                       |
| facebook/litho                           | 2.16%                       |
| oss-review-toolkit/ort                   | 1.96%                       |
| apache/tomcat                            | 1.94%                       |
| nvidia/nemo                              | 1.76%                       |
| h2oai/h2ogpt                             | 1.32%                       |
| conan-io/conan                           | 1.30%                       |
| huggingface/transformers                 | 1.05%                       |


### Distribution of Programming Languages

We do however note a severe skew towards Python and Java with only 3.8% of samples being Kotlin.

| Programming Language |  Count  | Percentage |
|----------------------|--------:|-----------:|
| python               |  10985  | 62.82%     |
| java                 |   5881  | 33.67%     |
| kotlin               |    603  | 3.45%      |


## Difficulty Distribution for "merge" Scenarios

| Difficulty | Proportion |
|------------|-----------:|
| easy       | 0.516466   |
| hard       | 0.299672   |
| medium     | 0.183861   |

**Languages** We note that the text data in this dataset consists mostly of: commit messages, comments and is primarily in English. We do however not filter for any human languages explcitly.