Modeling Preferences: A Bayesian Mixture of Finite Mixtures for Rankings and Ratings
偏好建模:排名与评分的贝叶斯有限混合之混合模型AI 解读 ↓
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偏好建模:排名与评分的贝叶斯有限混合之混合模型AI 解读 ↓
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Rankings and ratings are commonly used to express preferences but provide distinct and complementary information.Rankings give ordinal and scale-free comparisons but lack granularity; ratings provide cardinal and granular assessments but may be highly subjective or inconsistent.Collecting and analyzing rankings and ratings jointly has not been performed until recently due to a lack of principled methods.In this work, we propose a flexible, joint statistical model for rankings and ratings-the Bradley-Terry-Luce-Binomial (BTL-Binomial).The model captures rater effects and preference heterogeneity, respectively, with judge-specific random effects and a latent class mixture framework where the number of classes is unknown a priori.We propose computationally-efficient estimation via a Bayesian mixture of finite mixtures (MFM) approach.Finally, we demonstrate statistical inference and decision-making based on rankings and ratings jointly through applications to real and simulated datasets in academic peer review.Supplementary materials for this article are available online, including a standardized description of the materials available for reproducing the work.