professor, Department of Biostatistics,
Analysis of categorical data.
I have worked with several topics under this heading. Particular interests are
SCD and DIGRAM
Most of my work on analysis of ordinal categorical data has been implemented in a program, SCD, for statistical analysis of categorical data. DIGRAM started life (too many years ago) as a series of stand alone programs. An early version collecting procedures for analysis of high-dimensional contingency tables by Discrete Graphical Models was called DIGRAM. DIGRAM has since then been included in the larger SCD package now supporting:
A ZIP file with the version 1.84 of the program, the user guide and some examples may be downloaded here: digram.zip. Use the SHOW N command if you want to see what has happened to the program, since the publication of the user guide in 2003.