raschdlikLA: Rasch model (with discrimination prameter) marginal...

In nando11235813/raschreg: Item Response Theory models including explanatory variables of the ability parameter

Description

Approximation of the marginal log-likelihood of the Rasch model (with a common discrimination parameter for all items) using the Laplace approximation.

Usage

  raschdlikLA(par, X, fixed = NULL)

Arguments

par	Numeric vector of parameters (length J+1).
X	Item matrix (J columns) containing only zeroes and ones.
fixed	Optional numeric vector (length J). If supplied, only NA entries in fixed will be estimated.

Details

Uses two Rcpp compiled functions: hbc and raschlik

Value

Returns the value of the marginal log-likelihood evaluated at par

Author(s)

Fernando Massa, [e-mail]

References

\insertRef

azevedo1994raschreg

See Also

raschlikLA, raschreglikLA, raschdreglikLA, irt2plikLA, irt2preglikLA

nando11235813/raschreg documentation built on Oct. 2, 2021, 3:11 p.m.