Generalized score matching

Jiazhen Xu, Janice L. Scealy, Andrew T.A. Wood and Tao Zou

Journal of Multivariate Analysis, 2025, vol. 210, issue C

Abstract: Score matching is an estimation procedure that has been developed for statistical models whose probability density function or probability mass function is known up to proportionality but whose normalizing constant is intractable, so that maximum likelihood is difficult or impossible to implement. To date, applications of score matching have focused more on continuous IID models. Motivated by various data modeling problems, this article proposes a unified asymptotic theory of generalized score matching developed under the independence assumption, covering both continuous and discrete response data, thereby giving a sound basis for score-matching-based inference. Real data analyses and simulation studies provide convincing evidence of strong practical performance of the proposed methods.

Keywords: Auto model; Compositional data analysis; Conway–Maxwell–Poisson regression; Fisher divergence; Intractable normalizing constant (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1016/j.jmva.2025.105473

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