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---
license: apache-2.0
dataset_info:
features:
- name: repo
dtype: string
- name: base_commit
dtype: string
- name: license
dtype: string
splits:
- name: test
num_examples: 4814
programming_languages: [java]
tags:
- coding
- code-migration
- java
- amazon
- amazon-science
- aws
---
# MigrationBench
<table>
<tr>
<td style="padding: 0;">
<a href="https://huggingface.co/collections/AmazonScience/migrationbench-68125452fc21a4564b92b6c3">
<img src="https://img.shields.io/badge/-🤗 MigrationBench-4d5eff?style=flatten&labelColor" alt="MigrationBench (Hugging Face)">
</a>
</td>
<td style="padding: 0;">
<a href="https://github.com/amazon-science/MigrationBench">
<img src="https://img.shields.io/badge/MigrationBench-000000?style=flatten&logo=github" alt="MigrationBench (GitHub)">
</a>
</td>
<td style="padding: 0;">
<a href="https://github.com/amazon-science/SDFeedback">
<img src="https://img.shields.io/badge/SDFeedback-000000?style=flatten&logo=github&logoColor=white" alt="SDFeedback (GitHub)">
</a>
</td>
<td style="padding: 0;">
<a href="https://arxiv.org/abs/2505.09569">
<img src="https://img.shields.io/badge/arXiv-2505.09569-b31b1b.svg?style=flatten" alt="MigrationBench (arXiv)">
</a>
</td>
<td style="padding: 0; padding-left: 10px; vertical-align: middle;">
<a href="https://huggingface.co/datasets/AmazonScience/migration-bench-java-full">
<img src="https://img.shields.io/badge/-🤗 java--full-8a98ff?style=flat&labelColor" alt="java-full">
</a>
</td>
<td style="padding: 0; vertical-align: middle;">
<a href="https://huggingface.co/datasets/AmazonScience/migration-bench-java-selected">
<img src="https://img.shields.io/badge/-🤗 java--selected-8a98ff?style=flat&labelColor" alt="java-selected">
</a>
</td>
<td style="padding: 0; vertical-align: middle;">
<a href="https://huggingface.co/datasets/AmazonScience/migration-bench-java-utg">
<img src="https://img.shields.io/badge/-🤗 java--utg-8a98ff?style=flat&labelColor" alt="java-utg">
</a>
</td>
</tr>
</table>
## 1. 📖 Overview
[🤗 MigrationBench](https://huggingface.co/collections/AmazonScience/migrationbench-68125452fc21a4564b92b6c3)
is a large-scale code migration benchmark dataset at the **repository** level,
across multiple programming languages.
- Current and initial release includes `java 8` repositories with the `maven` build system, as of May 2025.
## 2. Datasets
There are three datasets in [🤗 MigrationBench](https://huggingface.co/collections/AmazonScience/migrationbench-68125452fc21a4564b92b6c3):
- All repositories included in the datasets are available on GitHub, under the `MIT` or `Apache-2.0` license.
| Index | Dataset | Size | Notes |
|-------|-----------------------------------------------|-------|-----------------------------------------------------------------------------------------------------|
| 1 | [🤗 `AmazonScience/migration-bench-java-full`](https://huggingface.co/datasets/AmazonScience/migration-bench-java-full) | 5,102 | Each repo has a test directory or at least one test case |
| 2 | [🤗 `AmazonScience/migration-bench-java-selected`](https://huggingface.co/datasets/AmazonScience/migration-bench-java-selected) | 300 | A **subset** of [🤗 `migration-bench-java-full`](https://huggingface.co/datasets/AmazonScience/migration-bench-java-full) |
| 3 | [🤗 `AmazonScience/migration-bench-java-utg`](https://huggingface.co/datasets/AmazonScience/migration-bench-java-utg) | 4,814 | The unit test generation (utg) dataset, **disjoint** with [🤗 `migration-bench-java-full`](https://huggingface.co/datasets/AmazonScience/migration-bench-java-full)|
## 3. Metadata
Metadata is provided in the `csv` file for each dataset:
1. `repo (str)`: The original repo URL without the `https://github.com/` prefix
1. `base_commit (str)`: Base commit id
- At this commit with `java 8` and `maven`, the repository is able to (1) compile and (2) pass existing unit tests and integration tests if any
- It is the starting point for code migration from `java 8`
1. `license (str)`: The license of the repository, either `MIT` or `Apache2.0` for the whole dataset
## 4. 📚 Citation
```bibtex
@misc{liu2025migrationbenchrepositorylevelcodemigration,
title={MIGRATION-BENCH: Repository-Level Code Migration Benchmark from Java 8},
author={Linbo Liu and Xinle Liu and Qiang Zhou and Lin Chen and Yihan Liu and Hoan Nguyen and Behrooz Omidvar-Tehrani and Xi Shen and Jun Huan and Omer Tripp and Anoop Deoras},
year={2025},
eprint={2505.09569},
archivePrefix={arXiv},
primaryClass={cs.SE},
url={https://arxiv.org/abs/2505.09569},
}
```
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