FairCoder: Evaluating Social Bias of LLMs in Code Generation

• URL: http://arxiv.org/abs/2501.05396v2
• Date: Tue, 01 Apr 2025 19:17:32 GMT
• Title: FairCoder: Evaluating Social Bias of LLMs in Code Generation
• Authors: Yongkang Du, Jen-tse Huang, Jieyu Zhao, Lu Lin,
• Abstract summary: We introduce FairCoder, a novel benchmark for evaluating social bias in code generation.<n>Three metrics are designed to assess fairness performance on this benchmark.<n>The findings reveal that all tested LLMs exhibit social bias.
• Score: 25.358230310973248
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Large language models (LLMs) have been widely deployed in coding tasks, drawing increasing attention to the evaluation of the quality and safety of LLMs' outputs. However, research on bias in code generation remains limited. Existing studies typically identify bias by applying malicious prompts or reusing tasks and dataset originally designed for discriminative models. Given that prior datasets are not fully optimized for code-related tasks, there is a pressing need for benchmarks specifically designed for evaluating code models. In this study, we introduce FairCoder, a novel benchmark for evaluating social bias in code generation. FairCoder explores the bias issue following the pipeline in software development, from function implementation to unit test, with diverse real-world scenarios. Additionally, three metrics are designed to assess fairness performance on this benchmark. We conduct experiments on widely used LLMs and provide a comprehensive analysis of the results. The findings reveal that all tested LLMs exhibit social bias.

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