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A Bayesian Semiparametric Latent Variable Model for Mixed Responses

Published online by Cambridge University Press:  01 January 2025

Ludwig Fahrmeir*
Affiliation:
Ludwig-Maximilians-Universität München
Alexander Raach
Affiliation:
Ludwig-Maximilians-Universität München
*
Requests for reprints should be sent to Ludwig Fahrmeir, Institut für Statistik, Seminar für Statistik und ihre Anwendung in den Wirtschafts- und Sozialwissenschaften, Ludwig-Maximilians-Universität München, Ludwigstraße 33, 80539 Munich, Germany. E-mail: ludwig.fahrmeir@stat.uni-muenchen.de

Abstract

In this paper we introduce a latent variable model (LVM) for mixed ordinal and continuous responses, where covariate effects on the continuous latent variables are modelled through a flexible semiparametric Gaussian regression model. We extend existing LVMs with the usual linear covariate effects by including nonparametric components for nonlinear effects of continuous covariates and interactions with other covariates as well as spatial effects. Full Bayesian modelling is based on penalized spline and Markov random field priors and is performed by computationally efficient Markov chain Monte Carlo (MCMC) methods. We apply our approach to a German social science survey which motivated our methodological development.

Information

Type
Theory and Methods
Copyright
Copyright © 2007 The Psychometric Society

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