INDSCAL - INDividual differences SCALing
compares up to 100 different HAMLET matrices using Carroll and Chang's
(1970) Individual Differences Scaling,
as an alternative to PINDIS.
These should all have been produced using the same search list,
and be of the same size, or an error will be indicated and the
matrix selected will be ignored.
INDSCAL provides internal metric analysis of
a set of dis/similarity matrices in terms of a weighted distance
model, such that each "subject" (or text source) has a set of
dimensional weights which systematically "distort" the group
stimulus space.
- First select a series of matrices by clicking on their
names in the file list window. This will add the names of the
files selected to the right-hand window. (Note that all windows
are resizeable.)
- Then click on the Run INDSCAL button to
execute the procedure. The results will be displayed in
graphic form. It is possible to
switch the display between the subject space,
representing comparisons between the matrices selected, and the
group space, which shows the corresponding
search list items as reflected by combining all of the
individual matrices. SUBJSTAT provides an appropriate
arc-distance measure for the analysis of the significance
of distances between items in the group space coordinates produced by
INDSCAL