The Open UniversitySkip to content

Gene Expression Imputation Techniques for Robust Post Genomic Knowledge Discovery

Sehgal, Shoaib; Gondal, Iqbal and Dooley, Laurence S. (2008). Gene Expression Imputation Techniques for Robust Post Genomic Knowledge Discovery. In: Kelemen, Arpad; Abraham, Ajith and Liang, Yulan eds. Computational Intelligence in Medical Informatics. Studies in Computational Intelligence, 85. Berlin: Springer-Verlag, pp. 185–206.

DOI (Digital Object Identifier) Link:
Google Scholar: Look up in Google Scholar


Microarrays measure expression patterns of thousands of genes at a time, under same or diverse conditions, to facilitate faster analysis of biological processes. This gene expression data is being widely used for diagnosis, prognosis and tailored drug discovery. Microarray data, however, commonly contains missing values, which can have high impact on subsequent biological knowledge discovery methods. This has been catalyst for the manifest of different imputation algorithms, including Collateral Missing Value Estimation (CMVE), Bayesian Principal Component Analysis (BPCA), Least Square Impute (LSImpute), Local Least Square Impute (LLSImpute) and K-Nearest Neighbour (KNN). This Chapter investigates the impact of missing values on post genomic knowledge discovery methods like, Gene Selection and Gene Regulatory Network (GRN) reconstruction. A framework for robust subsequent biological knowledge inference has been proposed which has shown significant improvements in the outcomes of Gene Selection and GRN reconstruction methods.

Item Type: Book Chapter
ISBN: 3-540-75766-X, 978-3-540-75766-5
Keywords: Microarray Gene Expression Data; Missing Values Estimaiton; Post Genomic Knowledge Discovery;
Academic Unit/Department: Mathematics, Computing and Technology > Computing & Communications
Interdisciplinary Research Centre: Centre for Research in Computing (CRC)
Item ID: 10504
Depositing User: Laurence Dooley
Date Deposited: 08 Apr 2008
Last Modified: 02 Dec 2010 20:07
Share this page:


Scopus Citations

Actions (login may be required)

Policies | Disclaimer

© The Open University   + 44 (0)870 333 4340