The role of indirect connections in gene networks in predicting function

Bioinformatics - Tập 27 Số 13 - Trang 1860-1866 - 2011
Jesse Gillis1, Paul Pavlidis1
1Centre for High-Throughput Biology and Department of Psychiatry, 177 Michael Smith Laboratories, 2185 East Mall, University of British Columbia, Vancouver, BC V6T1Z4, Canada

Tóm tắt

AbstractMotivation: Gene networks have been used widely in gene function prediction algorithms, many based on complex extensions of the ‘guilt by association’ principle. We sought to provide a unified explanation for the performance of gene function prediction algorithms in exploiting network structure and thereby simplify future analysis.Results: We use co-expression networks to show that most exploited network structure simply reconstructs the original correlation matrices from which the co-expression network was obtained. We show the same principle works in predicting gene function in protein interaction networks and that these methods perform comparably to much more sophisticated gene function prediction algorithms.Availability and implementation: Data and algorithm implementation are fully described and available at http://www.chibi.ubc.ca/extended. Programs are provided in Matlab m-code.Contact:  [email protected]Supplementary information:  Supplementary data are available at Bioinformatics online.

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Bioinformatics

Tập 27 Số 13

1860-1866

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