---
dataset_info:
- config_name: commitchronicle-py-long
  features:
  - name: hash
    dtype: string
  - name: repo
    dtype: string
  - name: date
    dtype: string
  - name: license
    dtype: string
  - name: message
    dtype: string
  - name: mods
    list:
      - name: change_type
        dtype: string
      - name: old_path
        dtype: string
      - name: new_path
        dtype: string
      - name: diff
        dtype: string
  splits:
  - name: test
    num_examples: 163
- config_name: commitchronicle-py-long-labels
  features:
  - name: hash
    dtype: string
  - name: repo
    dtype: string
  - name: date
    dtype: string
  - name: license
    dtype: string
  - name: message
    dtype: string
  - name: label
    dtype: int8
  - name: comment
    dtype: string
  splits:
  - name: test
    num_bytes: 272359
    num_examples: 858
configs:
- config_name: commitchronicle-py-long
  data_files:
  - split: test
    path: commitchronicle-py-long/test-*
- config_name: commitchronicle-py-long-labels
  data_files:
  - split: test
    path: commitchronicle-py-long-labels/test-*
---

# 🏟️ Long Code Arena (Commit message generation)

This is the benchmark for the Commit message generation task as part of the
🏟️ [Long Code Arena benchmark](https://huggingface.co/spaces/JetBrains-Research/long-code-arena).

The current version is a manually curated subset of the Python test set from the 🤗 [CommitChronicle dataset](https://huggingface.co/datasets/JetBrains-Research/commit-chronicle), tailored for larger commits.

## How-to

1. List all the available configs
   via [`datasets.get_dataset_config_names`](https://huggingface.co/docs/datasets/v2.14.3/en/package_reference/loading_methods#datasets.get_dataset_config_names)
   and choose an appropriate one.

   Current configs: `commitchronicle-py-long`, `commitchronicle-py-long-labels`

2. Load the data
   via [`load_dataset`](https://huggingface.co/docs/datasets/v2.14.3/en/package_reference/loading_methods#datasets.load_dataset):

    ```
    from datasets import load_dataset

    configuration = "TODO"  # select a configuration
    dataset = load_dataset("JetBrains-Research/lca-cmg", configuration, split="test")
    ```

   Note that all the data we have is considered to be in the test split.

**Note.** Working with git repositories
under [`repos`](https://huggingface.co/datasets/JetBrains-Research/lca-cmg/tree/main/repos) directory is not supported
via 🤗 Datasets. Download and extract the contents of each repository. We provide a full list of files
in [`paths.json`](https://huggingface.co/datasets/JetBrains-Research/lca-cmg/blob/main/paths.json).

## Dataset Structure

This dataset contains three kinds of data:

* *full data* about each commit (including modifications)
* metadata with quality *labels*
* compressed *git repositories*

### Full data

This section concerns configuration with *full data* about each commit (no `-labels` suffix).

Each example has the following fields:

| **Field** |              **Description**              |
|:---------:|:-----------------------------------------:|
|  `repo`   |            Commit repository.             |
|  `hash`   |               Commit hash.                |
|  `date`   |               Commit date.                |
| `license` |       Commit repository's license.        |
| `message` |              Commit message.              |
|  `mods`   | List of file modifications from a commit. |

Each file modification has the following fields:

|   **Field**   |                                          **Description**                                          |
|:-------------:|:-------------------------------------------------------------------------------------------------:|
| `change_type` | Type of change to current file. One of: `ADD`, `COPY`, `RENAME`, `DELETE`, `MODIFY` or `UNKNOWN`. |
|  `old_path`   |                           Path to file before change (might be empty).                            |
|  `new_path`   |                            Path to file after change (might be empty).                            |
|    `diff`     |                                   `git diff` for current file.                                    |

Data point example:

```
{'hash': 'b76ed0db81b3123ede5dc5e5f1bddf36336f3722',
 'repo': 'apache/libcloud',
 'date': '05.03.2022 17:52:34',
 'license': 'Apache License 2.0',
 'message': 'Add tests which verify that all OpenStack driver can be instantiated\nwith all the supported auth versions.\nNOTE: Those tests will fail right now due to the regressions being\nintroduced recently which breaks auth for some versions.',
 'mods': [{'change_type': 'MODIFY',
    'new_path': 'libcloud/test/compute/test_openstack.py',
    'old_path': 'libcloud/test/compute/test_openstack.py',
    'diff': '@@ -39,6 +39,7 @@ from libcloud.utils.py3 import u\n<...>'}],
}    
```

### Labels

This section concerns configuration with metadata and *labels* (with `-labels` suffix).

Each example has the following fields:

| **Field** |                          **Description**                           |
|:---------:|:------------------------------------------------------------------:|
|  `repo`   |                         Commit repository.                         |
|  `hash`   |                            Commit hash.                            |
|  `date`   |                            Commit date.                            |
| `license` |                    Commit repository's license.                    |
| `message` |                          Commit message.                           |
|  `label`  |         Label of the current commit as a target for CMG task.          |
| `comment` | Comment for a label for the current commit (optional, might be empty). |

Labels are in 1–5 scale, where:

* 1 – strong no
* 2 – weak no
* 3 – unsure
* 4 – weak yes
* 5 – strong yes

Data point example:

```
{'hash': '1559a4c686ddc2947fc3606e1c4279062cc9480f',
 'repo': 'appscale/gts',
 'date': '15.07.2018 21:00:39',
 'license': 'Apache License 2.0',
 'message': 'Add auto_id_policy and logs_path flags\n\nThese changes were introduced in the 1.7.5 SDK.',
 'label': 1,
 'comment': 'no way to know the version'}
```

### Git Repositories

This section concerns the [`repos`](https://huggingface.co/datasets/JetBrains-Research/lca-cmg/tree/main/repos) directory,
which stores compressed Git repositories for all the commits in this benchmark. After you download and extract it, you
can work with each repository either via Git or via Python libraries
like [GitPython](https://github.com/gitpython-developers/GitPython)
or [PyDriller](https://github.com/ishepard/pydriller).