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arXiv 2403.05565cs.HCcs.AI
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OpenHEXAI:一个用于可解释机器学习以人为中心评估的开源框架

OpenHEXAI: An Open-Source Framework for Human-Centered Evaluation of Explainable Machine Learning

UIUC(伊利诺伊大学厄巴纳-香槟分校);Visa Research(Visa研究院);Carnegie Mellon University(卡内基梅隆大学);University of Chicago(芝加哥大学);Harvard University(哈佛大学)

Jiaqi Ma, Vivian Lai, Yiming Zhang, Chacha Chen, Paul Hamilton, Davor Ljubenkov, Himabindu Lakkaraju, Chenhao Tan

AI总结:

针对可解释AI方法以人为中心评估存在的实施复杂、可复现性差等难题,本文提出开源框架OpenHEXAI,提供数据集、工具、指标等全套支撑,并基于其完成四种主流事后解释方法的系统性基准测试。

摘要:

近年来,出于理解高风险场景下机器学习模型行为的需求,可解释人工智能(XAI)方法大量涌现。然而,要合理评估XAI方法的有效性,必然需要人类受试者的参与,而开展以人为中心的基准测试在诸多方面存在挑战:用户研究的设计与实施过程复杂;用户研究设计空间中的大量设计选择会导致可复现性问题;对机器学习研究者而言,开展用户研究颇具难度甚至令人望而却步。为应对这些挑战,本文提出OpenHEXAI——一个用于XAI方法以人为中心评估的开源框架。OpenHEXAI具备以下特性:(1)包含多样化的基准数据集、预训练模型与事后解释方法;(2)提供易用的用户研究网页应用;(3)拥有全面的评估指标,用于衡量事后解释方法在人-AI决策任务场景下的有效性;(4)给出实验文档记录的最佳实践建议;(5)配备功效分析与成本估算的便捷工具。OpenHEXAI是首个旨在推动XAI方法以人为中心基准测试的大规模基础设施项目,它简化了XAI方法用户研究的设计与实施流程,从而让研究者和从业者能够聚焦于科学问题本身,此外还通过标准化设计提升了可复现性。基于OpenHEXAI,我们进一步对四种最先进的事后解释方法开展了系统性基准测试,从准确率、公平性以及用户对机器学习模型的信任度与理解度等维度,比较了它们对人-AI决策任务的影响。

英文摘要:

Recently, there has been a surge of explainable AI (XAI) methods driven by the need for understanding machine learning model behaviors in high-stakes scenarios. However, properly evaluating the effectiveness of the XAI methods inevitably requires the involvement of human subjects, and conducting human-centered benchmarks is challenging in a number of ways: designing and implementing user studies is complex; numerous design choices in the design space of user study lead to problems of reproducibility; and running user studies can be challenging and even daunting for machine learning researchers. To address these challenges, this paper presents OpenHEXAI, an open-source framework for human-centered evaluation of XAI methods. OpenHEXAI features (1) a collection of diverse benchmark datasets, pre-trained models, and post hoc explanation methods; (2) an easy-to-use web application for user study; (3) comprehensive evaluation metrics for the effectiveness of post hoc explanation methods in the context of human-AI decision making tasks; (4) best practice recommendations of experiment documentation; and (5) convenient tools for power analysis and cost estimation. OpenHEAXI is the first large-scale infrastructural effort to facilitate human-centered benchmarks of XAI methods. It simplifies the design and implementation of user studies for XAI methods, thus allowing researchers and practitioners to focus on the scientific questions. Additionally, it enhances reproducibility through standardized designs. Based on OpenHEXAI, we further conduct a systematic benchmark of four state-of-the-art post hoc explanation methods and compare their impacts on human-AI decision making tasks in terms of accuracy, fairness, as well as users' trust and understanding of the machine learning model.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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