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stat.ME2025
Fitting sparse high-dimensional varying-coefficient models with Bayesian regression tree ensembles
Soham Ghosh, Saloni Bhogale, Sameer K. Deshpande
By allowing the effects of covariates in a linear regression model to vary as functions of additional effect modifiers, varying-coefficient models (VCMs) strike a compellin…
stat.AP2025
Spatial Dependencies in Item Response Theory: Gaussian Process Priors for Ecological and Cognitive Measurement
Mingya Huang, Soham Ghosh
Measurement validity in Item Response Theory depends on appropriately modeling dependencies between items when these reflect meaningful theoretical structures rather than random me…
stat.ME2025
High-dimensional regression with outcomes of mixed-type using the multivariate spike-and-slab LASSO
Soham Ghosh, Sameer K. Deshpande
We consider a high-dimensional multi-outcome regression in which possibly dependent, binary and continuous outcomes are regressed onto covariates. We model the observed ou…