This MATLAB software package estimates the parameters of the Optimal Scaling of
Interactions (OSI) model and presents the estimation results. For an overview of
the OSI model, see Van Rosmalen, Koning, & Groenen, Multivariate Behavioral
Research (conditionally accepted).

The main file of the software package is Main.m, and this file contains
instructions on how to use the programs.

To estimate the models for two example data sets, please run test_GSS_data.m or
test_STAR_data.m. These two data sets are described in the manuscript.

To be able to run the programs, the MATLAB Optimization Toolbox must have been
installed.
