Bioinformatics Advance Access published online on February 15, 2006
Bioinformatics, doi:10.1093/bioinformatics/btl055
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1 DEIS, IEIIT - CNR, Università di Bologna, Viale Risorgimento 2, 40136 Bologna, Italy
Prediction of protein-protein interaction is a difficult and important problem in biology. In this paper, we propose a new method based on an ensemble of K-Local Hyperplane Distance Nearest Neighbor (HKNN) classifiers, where each HKNN is trained using a different physicochemical property of the amino-acids. Moreover, we propose a new encoding technique that combines the amino acid indices together with the 2-Grams amino-acid composition. A fusion of HKNN classifiers combined with the "Sum rule" enables us to obtain an improvement over the other state-of-the-art methods. The approach is demonstrated by building a learning system based on experimentally validated protein-protein interactions in human gastric bacterium Helicobacter pylori and in Human Dataset.
Received December 5, 2005
Revised January 30, 2006
Accepted February 9, 2006
Discovery note
An ensemble of K-local hyperplanes for predicting protein-protein interactions
Loris Nanni 1
and
Alessandra Lumini 1
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Abstract
Associate Editor: Anna Tramontano
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