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Integrating related data sets to imp...

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Integrating related data sets to improve inference in computational biology.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Integrating related data sets to improve inference in computational biology./
Author:	Fan, Xiaodan.
Description:	145 p.
Notes:	Adviser: Jun S. Liu.
Contained By:	Dissertation Abstracts International69-04B.
Subject:	Biology, Bioinformatics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3312349
ISBN:	9780549614852

Integrating related data sets to improve inference in computational biology.
Fan, Xiaodan.

Integrating related data sets to improve inference in computational biology. - 145 p.

Adviser: Jun S. Liu.

Thesis (Ph.D.)--Harvard University, 2008.

Biological systems are generally too complex to be fully characterized by a snapshot from a single viewpoint or at a single condition. Modern high-throughput experimental techniques are used to collect massive amounts of data to interrogate biological systems from various angles or on diverse conditions. Coupling with this trend, there is a growing interest in statistical methods for integrating multiple sources of information in an effort to improve statistical inference and gain deeper understanding of the systems. This dissertation presents data integration approaches in several computational biology problems. The main focus of these works is the development of hierarchical models, efficient Bayesian algorithms for computation, and systematical evaluation of their statistical power.

ISBN: 9780549614852Subjects--Topical Terms:

1018415
Biology, Bioinformatics.

Integrating related data sets to improve inference in computational biology.
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100 1 $a Fan, Xiaodan. $3 1036338
245 1 0 $a Integrating related data sets to improve inference in computational biology.
300 $a 145 p.
500 $a Adviser: Jun S. Liu.
500 $a Source: Dissertation Abstracts International, Volume: 69-04, Section: B, page: 2395.
502 $a Thesis (Ph.D.)--Harvard University, 2008.
520 $a Biological systems are generally too complex to be fully characterized by a snapshot from a single viewpoint or at a single condition. Modern high-throughput experimental techniques are used to collect massive amounts of data to interrogate biological systems from various angles or on diverse conditions. Coupling with this trend, there is a growing interest in statistical methods for integrating multiple sources of information in an effort to improve statistical inference and gain deeper understanding of the systems. This dissertation presents data integration approaches in several computational biology problems. The main focus of these works is the development of hierarchical models, efficient Bayesian algorithms for computation, and systematical evaluation of their statistical power.
520 $a The first chapter introduces the trend toward data integration in computational biology, together with a brief literature review. The second chapter presents a Bayesian meta-analysis approach for integrating multiple microarray time-course data sets to detect cell cycle-regulated genes. A new Metropolis-Hastings algorithm was designed to achieve fast convergence of MCMC in the scenario of pooling multiple data sets. A model comparison approach was used for classification and power evaluation. The third chapter provides another approach for detecting cell cycle-regulated genes, where the problem is formulated as parallel model selection with hierarchical Structure. Reversible jump MCMC was used to do dynamic model selection. A new procedure for proposal construction improved the mixing property of reversible jump MCMC, which made it feasibility for high-dimensional problems. In the fourth chapter, we discuss several basic problems in comparative genomics studies, where multiple genomes are combined for detecting functional elements. As an effort to direct future comparative genomics study, the phylogenetic HMM model was used to analyze the power of detecting conserved elements in various settings. We also present an empirical study on the conservation of transcriptional factor binding sites. It serves as a check of the conservation assumption and a clue for future integrated approach for genome annotation.
590 $a School code: 0084.
650 4 $a Biology, Bioinformatics. $3 1018415
650 4 $a Biology, Biostatistics. $3 1018416
650 4 $a Statistics. $3 517247
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710 2 $a Harvard University. $3 528741
773 0 $t Dissertation Abstracts International $g 69-04B.
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790 1 0 $a Liu, Jun S., $e advisor
791 $a Ph.D.
792 $a 2008
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