masking_ratio: Numeric (default is 0.5). Probability of masking a feature in the mcar_mask_generator() (MCAR = Missing Completely At Random). The MCAR masking scheme ensures that vaeac
model can do arbitrary conditioning as all coalitions will be trained. masking_ratio will be overruled if mask_gen_coalitions is specified.
n_features: The number of features, i.e., the number of columns in the training data.