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arXiv 2409.01735stat.MEstat.AP
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多目标贝叶斯优化用于序列采样模型决策中的似然自由推断

Multi-objective Bayesian optimization for Likelihood-Free inference in sequential sampling models of decision making

National University of Singapore(新加坡国立大学);Ajou University(亚洲大学)

David Chen, Xinwei Li, Eui-Jin Kim, Prateek Bansal, David Nott

AI总结:

本文提出MOBOLFI方法,利用多源数据进行似然自由推断,通过多维不一致度建模检测信息冲突并提升参数估计精度。

摘要:

统计模型常通过生成过程模拟合成数据,但会导致不可行的似然函数。似然自由推断(LFI)方法允许在这种情况下的贝叶斯推断。我们扩展了流行的方法,提出多目标贝叶斯优化用于似然自由推断(MOBOLFI),以在多源数据上进行LFI。MOBOLFI使用每个数据源的独立不一致度建模多维不一致度,允许对单个数据源似然和联合似然进行近似,从而检测信息冲突并深入理解不同数据源在估计参数中的重要性。通过多目标贝叶斯优化自适应选择模拟参数,确保所有数据源的似然组件高效近似。我们在序列采样模型(SSMs)中展示了我们的方法,这些模型广泛用于心理学和消费者行为建模。SSMs通常使用多源数据拟合,如选择和反应时间。我们的方法在与单不一致度方法的比较中展示了优势,后者用于拟合评估新加坡网约车司机对电动车偏好的数据。

英文摘要:

Statistical models are often defined by a generative process for simulating synthetic data, but this can lead to intractable likelihoods. Likelihood free inference (LFI) methods enable Bayesian inference to be performed in this case. Extending a popular approach to simulation-efficient LFI for single-source data, we propose Multi-objective Bayesian Optimization for Likelihood Free Inference (MOBOLFI) to perform LFI using multi-source data. MOBOLFI models a multi-dimensional discrepancy between observed and simulated data, using a separate discrepancy for each data source. The use of a multivariate discrepancy allows for approximations to individual data source likelihoods in addition to the joint likelihood, enabling detection of conflicting information and deeper understanding of the importance of different data sources in estimating individual parameters. The adaptive choice of simulation parameters using multi-objective Bayesian optimization ensures simulation efficient approximation of likelihood components for all data sources. We illustrate our approach in sequential sampling models (SSMs), which are widely used in psychology and consumer-behavior modeling. SSMs are often fitted using multi-source data, such as choice and response time. The advantages of our approach are illustrated in comparison with a single discrepancy for an SSM fitted to data assessing preferences of ride-hailing drivers in Singapore to rent electric vehicles.

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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