Missing Data Imputation Using Gaussian Copulas
Provides functions to impute missing values using Gaussian
copulas for mixed data types as described by Christoffersen et al.
(2021) <2102.02642>. The method is related to Hoff (2007)
<10.1214> and Zhao and Udell (2019) <1910.12845>
but differs by making a direct approximation of the log marginal likelihood
using an extended version of the Fortran code created by Genz and Bretz
(2002) <10.1198> in addition to also support multinomial