rater provides tools for fitting and interrogating statistical models of repeated categorical rating data. The package provides a simple interface to fit a selection of these models, with arbitrary priors, using MCMC and optimisation provided by Stan. A selection of functions are also provided to plot parts of these models and extract key parameters.
Get the posterior mean of the “pi” parameter.
point_estimate(fit, pars = "pi")
Plot the accuracy matrices of the raters.
plot(fit, pars = "raters")
rater requires the rstan package to fit models. Detailed instructions to install rstan can be found here
Install rater from CRAN with:
To install the development version of rater from GitHub run:
# install.packages("remotes") remotes::install_github("jeffreypullin/rater")
When installing from source, i.e. when installing the development version or installing from CRAN on Linux, the Stan models in the package will be compiled - this will lead to an install time of few minutes. Please be patient - this compilation means that no compilation is required when using the package
During compilation many warnings may be displayed in the terminal; these are harmless but impossible to suppress.