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Optimizing Large-Scale Educational Assessment with a “Divide-and-Conquer” Strategy: Fast and Efficient Distributed Bayesian Inference in IRT Models

Published online by Cambridge University Press:  01 January 2025

Sainan Xu
Affiliation:
Northeast Normal University
Jing Lu*
Affiliation:
Northeast Normal University
Jiwei Zhang*
Affiliation:
Northeast Normal University
Chun Wang
Affiliation:
University of Washington
Gongjun Xu
Affiliation:
University of Michigan
*
Correspondence should be made to Jing Lu, Key Laboratory of Applied Statistics of MOE, School of Mathematics and Statistics, Northeast Normal University, Changchun, Jilin, China. Email: luj282@nenu.edu.cn
Correspondence should be made to Jiwei Zhang, Faculty of Education, Key Laboratory of Applied Statistics of MOE, Northeast Normal University, Changchun, Jilin, China. Email: zhangjw713@nenu.edu.cn

Abstract

With the growing attention on large-scale educational testing and assessment, the ability to process substantial volumes of response data becomes crucial. Current estimation methods within item response theory (IRT), despite their high precision, often pose considerable computational burdens with large-scale data, leading to reduced computational speed. This study introduces a novel “divide- and-conquer” parallel algorithm built on the Wasserstein posterior approximation concept, aiming to enhance computational speed while maintaining accurate parameter estimation. This algorithm enables drawing parameters from segmented data subsets in parallel, followed by an amalgamation of these parameters via Wasserstein posterior approximation. Theoretical support for the algorithm is established through asymptotic optimality under certain regularity assumptions. Practical validation is demonstrated using real-world data from the Programme for International Student Assessment. Ultimately, this research proposes a transformative approach to managing educational big data, offering a scalable, efficient, and precise alternative that promises to redefine traditional practices in educational assessments.

Information

Type
Theory and Methods
Copyright
© 2024 The Author(s), under exclusive licence to The Psychometric Society

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