Research Interests

Exploratory multivariate data analysis, with special interest in rotation of principal components.
An Introduction to Principal Component Rotation (slide presentation in PDF format)
Gives background and motivation on the subject of principal component rotation. Originally presented in Steve Marron's Functional Data Analysis course, Spring 2002.

About the Varimax Criterion for Orthogonal Rotation
A movie, MATLAB® code, and more.

Principal Component Rotation: A Penalized Likelihood Approach (presentation in PDF format)
A brief introduction to some ongoing research. Originally presented as a poster at the IMS Mini-Meeting on Functional Data Analysis, University of Florida, Department of Statistics, January 10-11, 2003.