Bayesian 4 Parameter Item Response Model

Estimate Barton & Lord's (1981) four parameter IRT model with lower and upper asymptotes using Bayesian formulation described by Culpepper (2016) .


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

News

fourPNO 1.0.4

  • Added src/init.c to meet R 3.4 standards.
  • Added URL to project on GitHub.

fourPNO 1.0.3

  • Changed default chain_length to be burnin*2 in examples.

fourPNO 1.0.2

  • Variable name change for guessing and slipping matrices.

fourPNO 1.0.1

  • Corrected guessing parameter notation from cs to gs.

fourPNO 1.0.0

  • Initial release of fourPNO

Reference manual

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install.packages("fourPNO")

1.0.4 by Steven Andrew Culpepper, 2 years ago


https://github.com/tmsalab/fourPNO


Report a bug at https://github.com/tmsalab/fourPNO/issues


Browse source code at https://github.com/cran/fourPNO


Authors: Steven Andrew Culpepper [aut, cre]


Documentation:   PDF Manual  


Task views: Psychometric Models and Methods


GPL (>= 2) license


Imports Rcpp

Linking to Rcpp, RcppArmadillo


See at CRAN