Likelihood Ratio Test for DIF Detection in M2PL Models — D2PL_lrt • VEMIRT

Likelihood Ratio Test for DIF Detection in M2PL Models

Usage

D2PL_lrt(data, model, group, unif = F)

Arguments

data: An \(N\times J\) binary matrix of item responses
model: A \(J\times K\) binary matrix of loading indicators
group: An \(N\) dimensional vector of group indicators (integers from 1 to G)
unif: Whether to detect uniform D2PL only

Value

A list:

Sigma: Group-level posterior covariance matrices
Mu: Group-level posterior mean vectors
a: Slopes for group 1
b: Intercepts for group 1
gamma: D2PL parameters for the slopes
beta: D2PL parameters for the intercepts

See also

D2PL_em, D2PL_pair_em, D2PL_gvem

Author

Ruoyi Zhu <zhux0445@uw.edu>

Examples

if (FALSE) { # \dontrun{
with(D2PL_data, D2PL_lrt(data, model, group))} # }