This is the program for the 2010 Joint Statistical Meetings in Vancouver, British Columbia.
Abstract Details
Activity Number:
|
403
|
Type:
|
Topic Contributed
|
Date/Time:
|
Tuesday, August 3, 2010 : 2:00 PM to 3:50 PM
|
Sponsor:
|
Biometrics Section
|
Abstract - #307570 |
Title:
|
Functional Clustering in Nested Designs
|
Author(s):
|
Abel Rodriguez*+ and David Dunson
|
Companies:
|
University of California, Santa Cruz and Duke University
|
Address:
|
1156 High Street, Santa Cruz, CA, 95060, USA
|
Keywords:
|
Nonparametric Bayes ;
Nested Dirichlet Process ;
Hierarchical Functional Data ;
Functional Clustering ;
Hormone Profile
|
Abstract:
|
We discuss functional clustering procedures for nested designs, where multiple curves are collected for each subject in the study. We start by considering the application of standard functional clustering tools to this problem, which leads to groupings based on the average subject profiles. After discussing some of the shortcomings of this approach, we present a mixture model based on a generalization of the nested Dirichlet process that clusters subjects based on the distribution of their curves. This generalization of the Dirichlet processes induces a more flexible prior on the partitions of the data than other popular model-based clustering methods, allowing for different rates of introduction of new clusters as the number of observations increases. The methods are illustrated using hormone profiles from multiple menstrual cycles collected for women in the Early Pregnancy Study.
|
The address information is for the authors that have a + after their name.
Authors who are presenting talks have a * after their name.
Back to the full JSM 2010 program
|
2010 JSM Online Program Home
For information, contact jsm@amstat.org or phone (888) 231-3473.
If you have questions about the Continuing Education program, please contact the Education Department.