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arXiv 2409.05798cs.LGcs.AIcs.HCecon.EMstat.ML
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通过人类响应时间增强基于偏好的线性赌博机

Enhancing Preference-based Linear Bandits via Human Response Time

Massachusetts Institute of Technology(麻省理工学院);Harvard University(哈佛大学)

Shen Li, Yuyang Zhang, Zhaolin Ren, Claire Liang, Na Li, Julie A. Shah

AI总结:

本文提出利用人类响应时间作为偏好强度的补充信号,结合二元选择与EZ扩散模型构建高效效用估计器,并将其集成到基于偏好的线性赌博机中,在三个真实数据集上验证了该方法相比仅用选择的方法能显著加速偏好学习。

摘要:

交互式偏好学习系统通过将查询呈现为成对选项并收集二元选择来推断人类偏好。尽管二元选择简单且被广泛使用,但它们提供的关于偏好强度的信息有限。为了解决这一问题,我们利用与偏好强度呈负相关的人类响应时间作为额外信号。我们提出了一种计算高效的方法,结合选择与响应时间来估计人类效用函数,该方法以心理学中的EZ扩散模型为理论基础。理论与实证分析表明,对于具有强偏好的查询,响应时间通过提供关于偏好强度的额外信息来补充选择,从而显著改善效用估计。我们将该估计器纳入基于偏好的线性赌博机中,用于固定预算的最佳臂识别。在三个真实世界数据集上的模拟表明,与仅使用选择的方法相比,使用响应时间显著加速了偏好学习。更多材料,如代码、幻灯片和演讲视频,可在 https://shenlirobot.github.io/pages/NeurIPS24.html 获取。

英文摘要:

Interactive preference learning systems infer human preferences by presenting queries as pairs of options and collecting binary choices. Although binary choices are simple and widely used, they provide limited information about preference strength. To address this, we leverage human response times, which are inversely related to preference strength, as an additional signal. We propose a computationally efficient method that combines choices and response times to estimate human utility functions, grounded in the EZ diffusion model from psychology. Theoretical and empirical analyses show that for queries with strong preferences, response times complement choices by providing extra information about preference strength, leading to significantly improved utility estimation. We incorporate this estimator into preference-based linear bandits for fixed-budget best-arm identification. Simulations on three real-world datasets demonstrate that using response times significantly accelerates preference learning compared to choice-only approaches. Additional materials, such as code, slides, and talk video, are available at https://shenlirobot.github.io/pages/NeurIPS24.html

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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