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Statistical Methods for Estimation, ...

Lithio, Andrew Joseph.

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Statistical Methods for Estimation, Testing, and Clustering with Gene Expression Data.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Statistical Methods for Estimation, Testing, and Clustering with Gene Expression Data./
Author:	Lithio, Andrew Joseph.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
Description:	129 p.
Notes:	Source: Dissertation Abstracts International, Volume: 79-04(E), Section: B.
Contained By:	Dissertation Abstracts International79-04B(E).
Subject:	Statistics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10286151
ISBN:	9780355334760

Statistical Methods for Estimation, Testing, and Clustering with Gene Expression Data.
Lithio, Andrew Joseph.

Statistical Methods for Estimation, Testing, and Clustering with Gene Expression Data. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 129 p.

Source: Dissertation Abstracts International, Volume: 79-04(E), Section: B.

Thesis (Ph.D.)--Iowa State University, 2017.

This thesis is comprised of a collection of papers on the analysis of gene expression data, namely high-throughput RNA-sequencing (RNA-seq) data, with some methods generalizable to other scientific data. We first introduce a method for identifying differentially expressed genes using an empirical-Bayes-type analysis of RNA-seq data that employs efficient computational algorithms. A generalizable method for reparameterization is discussed, and simulation is used to demonstrate its importance in test performance. Next, exact tests for a monotone mean expression pattern are developed and incorporated into an existing pipeline for analysis of RNA-seq data. The advantages of computing exact p-values and of borrowing information across genes are demonstrated. The monotone tests are compared to existing tests and shown to perform favorably, particularly on data where the monotone hypothesis is appropriate. Finally, we extend existing k-means clustering algorithms to accommodate data with missing values and replicates. Among many other uses, clustering is often performed on gene expression patterns as an exploratory or summarizing tool. We show that in many cases, the extended algorithms improve upon existing methods and techniques without requiring significantly more computational expenditure.

ISBN: 9780355334760Subjects--Topical Terms:

517247
Statistics.

Statistical Methods for Estimation, Testing, and Clustering with Gene Expression Data.
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245 1 0 $a Statistical Methods for Estimation, Testing, and Clustering with Gene Expression Data.
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300 $a 129 p.
500 $a Source: Dissertation Abstracts International, Volume: 79-04(E), Section: B.
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502 $a Thesis (Ph.D.)--Iowa State University, 2017.
520 $a This thesis is comprised of a collection of papers on the analysis of gene expression data, namely high-throughput RNA-sequencing (RNA-seq) data, with some methods generalizable to other scientific data. We first introduce a method for identifying differentially expressed genes using an empirical-Bayes-type analysis of RNA-seq data that employs efficient computational algorithms. A generalizable method for reparameterization is discussed, and simulation is used to demonstrate its importance in test performance. Next, exact tests for a monotone mean expression pattern are developed and incorporated into an existing pipeline for analysis of RNA-seq data. The advantages of computing exact p-values and of borrowing information across genes are demonstrated. The monotone tests are compared to existing tests and shown to perform favorably, particularly on data where the monotone hypothesis is appropriate. Finally, we extend existing k-means clustering algorithms to accommodate data with missing values and replicates. Among many other uses, clustering is often performed on gene expression patterns as an exploratory or summarizing tool. We show that in many cases, the extended algorithms improve upon existing methods and techniques without requiring significantly more computational expenditure.
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