JSM Preliminary Online Program
This is the preliminary program for the 2009 Joint Statistical Meetings in Washington, DC.

The views expressed here are those of the individual authors
and not necessarily those of the ASA or its board, officers, or staff.

Back to main JSM 2009 Program page

Activity Number: 151
Type: Topic Contributed
Date/Time: Monday, August 3, 2009 : 10:30 AM to 12:20 PM
Sponsor: Section on Bayesian Statistical Science
Abstract - #303797
Title: Targeted Sequential Resampling from Large Data Sets in Mixture Modeling
Author(s): Ioanna Manolopoulou*+
Companies: Statistical and Applied Mathematical Sciences Institute
Address: 19 T.W. Alexander Drive, Durham, NC, 27709-4006,
Keywords: Sequential Monte Carlo ; Rare event detection ; Large datasets ; Mixture models

One of the challenges of Markov Chain Monte Carlo in large data sets is the need to scan through the whole data at each iteration of the sampler, which can be computationally prohibitive. Several approaches have been developed to address this, typically drawing computationally manageable samples of the data. Here we consider the specific case when most of the data provides no information about the parameters of interest. The motivating application arises in flow cytometry, where interest lies in identifying specific rare cell subtypes and characterizing them according to their corresponding markers. We present a MCMC approach where an initial sample of the full data is used to draw a further set of datapoints which contains more information about rare events, and extend it to a Sequential Monte Carlo framework whereby the selected sample is augmented sequentially as estimates improve.

  • 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 2009 program

JSM 2009 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.
Revised September, 2008