Statistics: Multivariate

cluster analysis

Agglomerative cluster analysis by Jan de Leeuw, and minimum spanning tree by David Betz.

correspondence analysis

CA program by M. Ennis, student in Nancy Reid's Sta2102S class.

gifi

Xlisp-Stat celebration of the work of Albert Gifi. More information elsewhere.

mds

Various Multidimensional Scaling methods, mostly metric. By Jan de Leeuw.

pca3

Puts the principle axis in a spin-proto. By Jan de Leeuw and John Fox.

power-method

Graphical demo of the power method to compute the dominant eigen-pair of a 2 x 2 matrix. By Jan de Leeuw.

rasch

The infamous Rasch model, with code for elementary symmetric functions, and various maximum likelihood procedures. By Jan de Leeuw.

Factor Analysis

Lots of factor analysis methods by Jan de Leeuw. Minimum residuals, maximum likelihood, Swain's method, Minimum Trace, and Image Analysis.