NDLI: Missing value estimation for DNA microarray gene expression data with principal curves

Content Provider	IEEE Xplore Digital Library
Author	Jinlong Shi Zhigang Luo
Copyright Year	2010
Description	Author affiliation: School of Computer, National University of Defense Technology, Hunan Changsha 410073, China (Jinlong Shi; Zhigang Luo)
Abstract	Computing analysis of gene expression data has been an essential approach for understanding cellular activities and identifying gene function. However, expression profiles generated by the high-throughput microarray experiments often contain missing values, which significantly affect the performance of subsequent statistical analysis and machine learning algorithms. So there is a great need for estimating these missing values as accurately as possible. Although there have been many estimation algorithms, but each of them has its flaws. This paper proposes an estimation method for missing values based on principal curve which is a nonlinear generalization of the first linear principal component analysis. Through finding the self-consistent smooth one dimensional curves that pass through the ‘middle’ of a multidimensional data set, principal curve can integrate the linear and nonlinear relationships between genes, and reveal the distribution of genes. Based on the framework of all the expression profiles, missing values can be estimated more accurately. To assess the performance of the method, comparisons with recently proposed estimation algorithms are carried out on several microarray data sets. The results shows that our method provides a better solution for the estimation of missing values in DNA microarray gene expression data.
Starting Page	262
Ending Page	265
File Size	288515
Page Count	4
File Format	PDF
ISBN	9781424467754
e-ISBN	9781424467754
DOI	10.1109/ICBBT.2010.5478964
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-04-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Machine learning algorithms Multidimensional systems Statistical analysis Humans Estimation Missing value Gene expression Matrix decomposition Microarray Condition monitoring Pattern analysis Principal curve DNA computing Principal component analysis
Content Type	Text
Resource Type	Article

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