Title
Mixture Models For Detecting Differentially Expressed Genes In Microarrays
Abstract
An important and common problem in microarray experiments is the detection of genes that are differentially expressed in a given number of classes. As this problem concerns the selection of significant genes from a large pool of candidate genes, it needs to be carried out within the framework of multiple hypothesis testing. In this paper, we focus on the use of mixture models to handle the multiplicity issue. With this approach, a measure of the local FDR (false discovery rate) is provided for each gene. An attractive feature of the mixture model approach is that it provides a framework for the estimation of the prior probability that a gene is not differentially expressed, and this probability can subsequently be used in forming a decision rule. The rule can also be formed to take the false negative rate into account. We apply this approach to a well-known publicly available data set on breast cancer, and discuss our findings with reference to other approaches.
Year
DOI
Venue
2006
10.1142/S0129065706000755
INTERNATIONAL JOURNAL OF NEURAL SYSTEMS
Keywords
Field
DocType
decision rule,false discovery rate,breast cancer,multiple hypothesis testing,candidate gene,mixture model
Decision rule,Data mining,False discovery rate,Candidate gene,Computer science,Multiple comparisons problem,Prior probability,Gene expression profiling,Mixture model,DNA microarray
Journal
Volume
Issue
ISSN
16
5
0129-0657
Citations 
PageRank 
References 
3
0.45
3
Authors
4
Name
Order
Citations
PageRank
L. Ben-Tovim Jones11429.50
Richard Bean236933.05
McLachlan Geoffrey J.31787126.70
Justin Xi Zhu4394.75