gpt is an R package to fit generalized processing tree models in R.
The package is not yet available on CRAN. To get the latest developer version
from GitHub, gpt can be installed via:
# install.packages("numDeriv", "methods", "matrixStats", "statmod")
# install.packages("devtools")
devtools::install_github("danheck/gpt")
If you use gpt, please cite the package as:
- Heck, D. W., Erdfelder, E., & Kieslich, P. J. (2018). Generalized processing tree models: Jointly modeling discrete and continuous variables. Psychometrika, 83, 893–918. https://doi.org/10.1007/s11336-018-9622-0