update_z_row_ord: Compute the observed ordinal mean and var in a row

In udellgroup/mixedgcImp: Missing value imputation for mixed data through Gaussian copula

Compute the observed ordinal mean and var in a row

Description

Iteratively update an estimate of the conditional mean and var at observed ordinal entries

Usage

update_z_row_ord(
  z,
  lower,
  upper,
  obs_indices,
  ord_obs_indices,
  ord_in_obs,
  obs_in_ord,
  f_sigma_oo_inv_z,
  sigma_oo_inv_diag,
  n_update = 1
)

Arguments

z	A row of Z
lower	A row of Lower
upper	A row of Upper
obs_indices	Boolean vector where TRUE indicates observed entries.
ord_obs_indices	Boolean vector where TRUE indicates observed ordinal entries.
ord_in_obs	Boolean vector where TRUE indicates ordinal entries.
obs_in_ord	Boolean vector where TRUE indicates observed ordinal entries.
f_sigma_oo_inv_z	A function computing The matrix-vector product Sigma_{obs, obs}^{-1} * z_{obs}
sigma_oo_inv_diag	The diagonal of Sigma_{obs, obs}^{-1}
n_update	The number of updates, only used when trunc_method is 'Iterative'

Value

A list containing

mean

Mean for observed ordinal

var

Var for observed ordinal

udellgroup/mixedgcImp documentation built on Jan. 25, 2023, 7:55 p.m.