BayesAME: Bayesian Active Model Evaluation

• URL: http://arxiv.org/abs/2607.27023v1
• Date: Wed, 29 Jul 2026 15:20:39 GMT
• Title: BayesAME: Bayesian Active Model Evaluation
• Abstract summary: BayesAME is a sequential Bayesian framework specifically targeting automatic determination of the coreset size.<n>We show that BayesAME consistently outperforms sequential adaptations of existing methods.<n>We also highlight that leveraging continuous response log-likelihoods over traditional binary scores significantly enhances estimation accuracy.
• Score: 27.758157009505908
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Evaluating large generative models across benchmarks is time-consuming and computationally expensive. This drives the need for methods that can estimate full benchmark performance by evaluating models on only a subset of items, known as a coreset. Current literature mostly requires the practitioner to input a coreset size. However, when reliable performance estimation takes priority over efficiency, an evaluation method should also be capable of automatically determining a coreset size that reflects this priority. We introduce BayesAME, a sequential Bayesian framework specifically targeting automatic determination of the coreset size. BayesAME models performance as a random variable by defining a latent ability for each group of items sharing the same historical model performances, with a joint prior distribution encoding the belief that the target model behaves similarly to these historical models. The posterior distribution over these abilities is used to derive performance estimators, quantify performance uncertainty, and select items to add to the coreset via an information-gain criterion. The coreset is iteratively augmented until the performance estimate fluctuation and the performance uncertainty fall below their respective user-defined thresholds. We propose a multi-target extension that captures performance correlations across multiple target models to further reduce the coreset size. Through extensive experiments across diverse benchmarks, we demonstrate that BayesAME consistently outperforms sequential adaptations of existing methods. Crucially, our comprehensive analysis addresses recent skepticism in the literature, establishing that non-random coreset selection is advantageous over random selection. Finally, we highlight that leveraging continuous response log-likelihoods over traditional binary scores significantly enhances estimation accuracy.

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