DUAL SCALING OF SUCCESSIVE CATEGORIES DATA
Shizuhiko Nishisato · Japanese Psychological Research · 1980
A method was developed to determine values of stimuli and category boundaries through differential weighting of subjects. The method transforms the data into the subjects-by-parameters (scale values of stimuli and category boundaries) matrix of incidences, and derives both weights for the subjects and estimates of the parameters which are the most discriminative in the least squares sense. A numerical example was presented to illustrate the procedure and points of interest.