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stat.ME2021
Bi-factor and second-order copula models for item response data
Sayed H. Kadhem, Aristidis K. Nikoloulopoulos
Bi-factor and second-order models based on copulas are proposed for item response data, where the items can be split into non-overlapping groups such that there is a homogeneous de…
stat.ME2019
Factor copula models for mixed data
Sayed H. Kadhem, Aristidis K. Nikoloulopoulos
We develop factor copula models for analysing the dependence among mixed continuous and discrete responses. Factor copula models are canonical vine copulas that involve both observ…