Fast Non-negative Dimensionality Reduction for Protein Fold Recognition. - Oleg Okun; Helen Priisalu; Alexessander Alves (ECML, 2005)

Fast Nonnegative Matrix Factorization and Its Application for Protein Fold Recognition. - Oleg Okun; Helen Priisalu (EURASIP J. Adv. Signal Process., 2006)

Random Forest for Gene Expression Based Cancer Classification: Overlooked Issues. - Oleg Okun; Helen Priisalu (IbPRIA (2), 2007)

Dataset Complexity and Gene Expression Based Cancer Classification. - Oleg Okun; Helen Priisalu (WILF, 2007)

Unsupervised data reduction. - Oleg Okun; Helen Priisalu (Signal Process., 2007)

Ensembles of k-nearest neighbors and dimensionality reduction. - Oleg Okun; Helen Priisalu (IJCNN, 2008)

Dataset complexity in gene expression based cancer classification using ensembles of k-nearest neighbors. - Oleg Okun; Helen Priisalu (Artif. Intell. Medicine, 2009)