# Dataset: Copy-based Reuse in Open Source Software

arXiv: https://arxiv.org/abs/2312.09370 · HTML: https://mlsanity.com/paper/2312.09370/

## Key facts

- Cited by 1 papers in the map (data through 14 Oct 2026).
- First posted on arXiv 14 Dec 2023.

## Built on by (most cited first, 1 of 1)

- [Cracks in The Stack: Hidden Vulnerabilities and Licensing Risks in LLM Pre-Training Datasets](https://mlsanity.com/paper/2501.02628/) (2025)

## Abstract (arXiv)

In Open Source Software, the source code and any other resources available in a project can be viewed or reused by anyone subject to often permissive licensing restrictions. In contrast to some studies of dependency-based reuse supported via package managers, no studies of OSS-wide copy-based reuse exist. This dataset seeks to encourage the studies of OSS-wide copy-based reuse by providing copying activity data that captures whole-file reuse in nearly all OSS. To accomplish that, we develop approaches to detect copy-based reuse by developing an efficient algorithm that exploits World of Code infrastructure: a curated and cross referenced collection of nearly all open source repositories. We expect this data to enable future research and tool development that support such reuse and minimize associated risks.