Improved functional prediction of proteins by learning kernel combinations in multilabel settings.

Abstract:

BACKGROUND:We develop a probabilistic model for combining kernel matrices to predict the function of proteins. It extends previous approaches in that it can handle multiple labels which naturally appear in the context of protein function. RESULTS:Explicit modeling of multilabels significantly improves the capability of learning protein function from multiple kernels. The performance and the interpretability of the inference model are further improved by simultaneously predicting the subcellular localization of proteins and by combining pairwise classifiers to consistent class membership estimates. CONCLUSION:For the purpose of functional prediction of proteins, multilabels provide valuable information that should be included adequately in the training process of classifiers. Learning of functional categories gains from co-prediction of subcellular localization. Pairwise separation rules allow very detailed insights into the relevance of different measurements like sequence, structure, interaction data, or expression data. A preliminary version of the software can be downloaded from http://www.inf.ethz.ch/personal/vroth/KernelHMM/.

journal_name

BMC Bioinformatics

journal_title

BMC bioinformatics

authors

Roth V,Fischer B

doi

10.1186/1471-2105-8-S2-S12

subject

Has Abstract

pub_date

2007-05-03 00:00:00

pages

S12

issn

1471-2105

pii

1471-2105-8-S2-S12

journal_volume

8 Suppl 2

pub_type

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