通过扩散模型进行数据增强,以提高AI公平性
Christina Hastings Blow1, Lijun Qian1, Camille Gibson2
1Prairie View A&M University, Electrical and Computer Engineering, Texas A&M University System, Prairie View, TX, United States.
Frontiers in artificial intelligence
|April 3, 2025
概括
使用扩散模型生成的合成数据,特别是表式无序扩散概率模型 (Tab-DDPM),可以提高人工智能 (AI) 在二进制分类任务中的公平性.
科学领域:
- 人工智能的人工智能
- 机器学习 机器学习
- 数据科学数据科学数据科学
背景情况:
- 人工智能公平旨在确保人工智能系统是透明的,可解释的,并符合用户的利益.
- 使用合成数据生成进行数据增强是解决数据稀缺问题的关键策略.
- 扩散模型是先进的生成技术,在计算机视觉中特别有效,并且越来越多地被用于其他数据类型.
研究的目的:
- 调查扩散模型在生成合成表格数据的有效性,以提高AI公平性.
- 在公平的背景下,评估表式数据增强的表式排斥扩散概率模型 (Tab-DDPM).
主要方法:
- 使用表格式排斥扩散概率模型 (Tab-DDPM) 来生成合成表格式数据.
- 应用数据增强与不同数量的生成数据.
- 从事从AIF360重新加权的样本,以进一步提高公平性.
- 通过使用五种传统的机器学习模型验证了这一方法:决策树,高斯天真贝斯,K-最近邻居,物流回归和随机森林.
主要成果:
- 由Tab-DDPM生成的合成数据在二进制分类任务中明显改善了公平性指标.
- 在多个传统的机器学习算法中验证了Tab-DDPM的有效性.
结论:
- 以Tab-DDPM为例的扩散模型显示,通过合成表格数据生成来增强AI公平性的巨大潜力.
- 这种方法提供了一种可行的方法来提高处理表格数据的AI系统的伦理性能.
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