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jorgetendeiro
GGUM:Generalized Graded Unfolding Model
An implementation of the generalized graded unfolding model (GGUM) in R, see Roberts, Donoghue, and Laughlin (2000) <doi:10.1177/01466216000241001>). It allows to simulate data sets based on the GGUM. It fits the GGUM and the GUM, and it retrieves item and person parameter estimates. Several plotting functions are available (item and test information functions; item and test characteristic curves; item category response curves). Additionally, there are some functions that facilitate the communication between R and 'GGUM2004'. Finally, a model-fit checking utility, MODFIT(), is also available.
Maintained by Jorge N. Tendeiro. Last updated 2 years ago.
6 stars 4.99 score 18 scripts 1 dependents
cran
metRology:Support for Metrological Applications
Provides classes and calculation and plotting functions for metrology applications, including measurement uncertainty estimation and inter-laboratory metrology comparison studies.
Maintained by Stephen L R Ellison. Last updated 2 months ago.
5 stars 3.41 score 7 dependents