A note on equivalent and nonequivalent parametrizations of the two-parameter logistic item response model

A Robitzsch - Information, 2024‏ - search.proquest.com
The two-parameter logistic (2PL) item response model is typically estimated using an
unbounded distribution for the trait θ. In this article, alternative specifications of the 2PL …

Deep Discrete Encoders: Identifiable Deep Generative Models for Rich Data with Discrete Latent Layers

S Lee, Y Gu - arxiv preprint arxiv:2501.01414, 2025‏ - arxiv.org
In the era of generative AI, deep generative models (DGMs) with latent representations have
gained tremendous popularity. Despite their impressive empirical performance, the …

[PDF][PDF] Exploratory General-response Cognitive Diagnostic Models with Higher-order Structures

J Liu, S Lee, Y Gu‏ - sites.stat.columbia.edu
Abstract Cognitive Diagnostic Models (CDMs) are popular discrete latent variable models in
educational and psychological measurement. While existing CDMs mainly focus on binary …