Factor, Bi-Factor, Second-Order and Factor Tree Copula Models

Estimation, model selection and goodness-of-fit of (1) factor copula models for mixed continuous and discrete data in Kadhem and Nikoloulopoulos (2021) ; (2) bi-factor and second-order copula models for item response data in Kadhem and Nikoloulopoulos (2023) ; (3) factor tree copula models for item response data in Kadhem and Nikoloulopoulos (2022) .