American Statistical Association
New York City
Metropolitan Area Chapter

Memorial Sloan-Kettering Cancer Center
Biostatistics Seminar



Jon A. Wellner
Department of Statistics/Biostatistics
University of Washington

SEMI-PARAMETRIC MODELS WITH DATA MISSING BY DESIGN
AND INVERSE PROBABILITY WEIGHTED EMPIRICAL PROCESSES:
PARTIAL RESULTS AND OPEN PROBLEMS

Horovitz-Thompson or inverse probability weighted (IPW) versions of likelihood equations provide one simple method of estimation for two-phase stratified sampling designs. In this talk, I will discuss some results for the basic Horovitz-Thompson empirical processes, which allows study of the asymptotic behavior of estimators for semiparametric models with nuisance parameters which can be estimated at rate square-root n. The results are based in part on theory for exchangeably weighted bootstrap empirical processes and also in part on new $Z-$theorems with estimated parameters.


Date: Wednesday, November 11, 2009
Time: 4:00 - 5:00 P.M.
Location: Memorial Sloan-Kettering Cancer Center
Department of Epidemiology and Biostatistics
307 East 63rd Street
(between First and Second Avenues)
3rd Floor Conference Room
New York, New York
Note: To gain access to the building, please follow the directions by the telephone in the foyer.

RESERVATIONS ARE NOT REQUIRED


Home Page | Chapter News | Chapter Officers | Chapter Events
Other Metro Area Events | ASA National Home Page | Links To Other Websites
NYC ASA Chapter Constitution | NYC ASA Chapter By-Laws

Copyright © 2009 by New York City Metropolitan Area Chapter of the ASA
Designed and maintained by Cynthia Scherer
Send questions or comments to nycasa@mindspring.com