ShortForm

Author: Anthony W. Raborn, Walter L. Leite
Contact: https://cran.r-project.org/web/packages/ShortForm/index.html
Description: ShortForm: Automatic Short Form Creation. Performs automatic creation of short forms of scales with an ant colony optimization algorithm and a Tabu search. As implemented in the package, the ant colony algorithm randomly selects items to build a model of a specified length, then updates the probability of item selection according to the fit of the best model within each set of searches. The algorithm continues until the same items are selected by multiple ants a given number of times in a row. On the other hand, the Tabu search changes one parameter at a time to be either free, constrained, or fixed while keeping track of the changes made and putting changes that result in worse fit in a tabu list so that the algorithm does not revisit them for some number of searches. See Leite, Huang, & Marcoulides (2008) <doi:10.1080/00273170802285743> for an applied example of the ant colony algorithm, and Marcoulides & Falk (2018) <doi:10.1080/10705511.2017.1409074> for an applied example of the Tabu search.
Analyses: Dimensionality; Factor/Latent Structure; Multidimensional Models
System Requirements: Windows, Mac, Linux
Measurement Model: Classical
License Type: Open-Source (R)
Documentation: user manual, real and simulated datasets