Check inputs to a call to vim, cv_vim, or sp_vim
check_inputs(Y, X, f1, f2, indx)
None. Called for the side effect of stopping the algorithm if any inputs are in an unexpected format.
the outcome
the covariates
estimator of the population-optimal prediction function using all covariates
estimator of the population-optimal prediction function using the reduced set of covariates
the index or indices of the covariate(s) of interest
Ensure that inputs to vim
, cv_vim
, and sp_vim
follow the correct formats.