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stat.ME2025
Robust estimation of polyserial correlation coefficients: A density power divergence approach
Max Welz
The association between a continuous and an ordinal variable is commonly modeled through the polyserial correlation model. However, this model, which is based on a partially-latent…
stat.ME2024
Robust Estimation of Polychoric Correlation
Max Welz, Patrick Mair, Andreas Alfons
Polychoric correlation is often an important building block in the analysis of rating data, particularly for structural equation models. However, the commonly employed maximum like…
stat.ME2024
Robust Estimation and Inference with Categorical Data
Max Welz
Categorical data pose a distinctive robustness challenge: contingency-table cells need not have a meaningful magnitude, ordering, or metric, so departures must instead be assessed…