Πλοήγηση ανά Συγγραφέα "Kowald, A."
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Forest classification trees and forest support vector machines algorithms: Demonstration using microarray data
Zintzaras, E.; Kowald, A. (2010)Classification into multiple classes when the measured variables are outnumbered is a major methodological challenge in -omics studies. Two algorithms that overcome the dimensionality problem are presented: the forest ... -
A mathematical model of HIV dynamics in the presence of a rescuing virus with replication deficiency
Zintzaras, E.; Kowald, A. (2011)Recently, an enzyme (Cre recombinase) has been developed by directed evolution that successfully removes the HIV genome from the nuclear DNA of infected cells. To explore this idea further, we hypothesized that a replication ... -
Non-parametric classification of protein secondary structures
Zintzaras, E.; Brown, N. P.; Kowald, A. (2006)Proteins were classified into their families using a classification tree method which is based on the coefficient of variations of physico-chemical and geometrical properties of the secondary structures of proteins. The ... -
Telomere Length in Peripheral Blood Mononuclear Cells of Patients on Chronic Hemodialysis Is Related With Telomerase Activity and Treatment Duration
Stefanidis, I.; Voliotis, G.; Papanikolaou, V.; Chronopoulou, I.; Eleftheriadis, T.; Kowald, A.; Zintzaras, E.; Tsezou, A. (2015)Telomere shortening to a critical limit is associated with replicative senescence. This process is prevented by the enzyme telomerase. Oxidative stress and chronic inflammation are factors accelerating telomere loss. Chronic ... -
A tree-based decision rule for identifying profile groups of cases without predefined classes: application in diffuse large B-cell lymphomas
Zintzaras, E.; Bai, M.; Douligeris, C.; Kowald, A.; Kanavaros, P. (2007)In this paper, we examined the utility of a forward growing classification tree as a supplement to cluster analysis for deriving a decision rule for the identification of profile groups when the cases do not belong to ...