Letters: Bio-molecular cancer prediction with random subspace ensembles of support vector machines

Authors:
Alberto Bertoni;Raffaella Folgieri;Giorgio Valentini
Affiliations:
DSI-Dipartimento di Scienze dell'Informazione Universití degli Studi di Milano, Italy;DSI-Dipartimento di Scienze dell'Informazione Universití degli Studi di Milano, Italy;DSI-Dipartimento di Scienze dell'Informazione Universití degli Studi di Milano, Italy
Venue:
Neurocomputing
Year:
2005

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Abstract

Support vector machines (SVMs), and other supervised learning techniques have been experimented for the bio-molecular diagnosis of malignancies, using also feature selection methods. The classification task is particularly difficult because of the high dimensionality and low cardinality of gene expression data. In this paper we investigate a different approach based on random subspace ensembles of SVMs: a set of base learners is trained and aggregated using subsets of features randomly drawn from the available DNA microarray data. Experimental results on the colon adenocarcinoma diagnosis and medulloblastoma clinical outcome prediction show the effectiveness of the proposed approach.