simdata

<p>There are 16 columns with 1000 rows. The first 8 columns contain continuous item response time data and the last 8 columns with discrete item responses. 
Among the discrete items, there are 4 dichotomous and 4 four-category ones.</p>

data

Estimation, scoring, and plotting functions for the semi-parametric factor model proposed by Liu & Wang (2022) <doi:10.1007/s11336-021-09832-8> and Liu & Wang (2023) <arXiv:2303.10079>. Both the conditional densities of observed responses given the latent factors and the joint density of latent factors are estimated non-parametrically. Functional parameters are approximated by smoothing splines, whose coefficients are estimated by penalized maximum likelihood using an expectation-maximization (EM) algorithm. E- and M-steps can be parallelized on multi-thread computing platforms that support 'OpenMP'. Both continuous and unordered categorical response variables are supported.

simdata: simdata

Description

Arguments