Learn R Programming
⚠️There's a newer version (1.1.0) of this package.Take me there.

fourPNO R package

Estimate Barton & Lord's four parameter IRT model with lower and upper asymptotes using Bayesian formulation described by Culpepper (2015).

Copy Link

Version

Install

install.packages('fourPNO')

Monthly Downloads

70

Version

1.0.4

License

GPL (>= 2)

Issues

0

Pull Requests

0

Stars

1

Forks

1

Maintainer

Steven Andrew Culpepper

Last Published

April 26th, 2017

Functions in fourPNO (1.0.4)

Gibbs_2PNO

Gibbs Implementation of 2PNO
Gibbs_4PNO

Gibbs Implementation of 4PNO
min2LL_4pno

Compute 4PNO Deviance
rmvnorm

Generate Random Multivariate Normal Distribution
Total_Tabulate

Calculate Tabulated Total Scores
Y_4pno_simulate

Simulate from 4PNO Model
fourPNO-package

fourPNO: Bayesian 4 Parameter Item Response Model
kappa_initialize

Initialize Thresholds
update_2pno

Update 2PNO Model Parameters
update_WKappaZ_NA

Update Lower and Upper Asymptote Parameters of 4PNO
update_theta

Internal Function for Updating Theta in Gibbs Sampler
update_ab_NA

Update a and b Parameters of 2PNO, 3PNO, 4PNO
update_ab_norestriction

Update a and b Parameters of 4pno without alpha > 0 Restriction