Estep {regDIF} | R Documentation |
Expectation step.
Description
Expectation step.
Usage
Estep(
p,
item_data,
pred_data,
item_type,
mean_predictors,
var_predictors,
theta,
samp_size,
num_items,
num_responses,
adapt_quad,
num_quad,
get_eap,
NA_cases
)
Arguments
p |
List of parameters. |
item_data |
Matrix or dataframe of item responses. |
pred_data |
Matrix or dataframe of DIF and/or impact predictors. |
item_type |
Vector of character values indicating the item type. |
mean_predictors |
Possibly different matrix of predictors for the mean impact equation. |
var_predictors |
Possibly different matrix of predictors for the variance impact equation. |
theta |
Vector of fixed quadrature points. |
samp_size |
Sample size in dataset. |
num_items |
Number of items in dataset. |
num_responses |
Number of responses for each item. |
adapt_quad |
Logical indicating whether to use adaptive quadrature. |
num_quad |
Number of quadrature points used for approximating the latent variable. |
get_eap |
Logical indicating whether to compute EAP scores. |
NA_cases |
Logical vector indicating missing observations. |
Value
a "list"
of posterior values from the expectation step
[Package regDIF version 1.1.1 Index]