Estimation of the Three Parameter Logistic (3PL) model using penalized likelihood estimation and bias reduction methodology.

#install.packages("devtools")
devtools::install_github("micbtz/S3PL", build_vignettes = TRUE)

Battauz, M. and Bellio, R. (2021). Shrinkage estimation of the three-parameter logistic model. Br J Math Stat Psychol. https://doi.org/10.1111/bmsp.12241