title: Application of Kohonen Neural Networks in classification of biologically active compounds.
abstract: Automated data classification is an indispensable tool in Drug Design. It allows to select homogeneous training sets or to distinguish compounds with required biological properties. The Kohonen Neural Networks (KNN) suggest new means for classification of biologically interesting compounds. In this paper, first, capabilities of KNN in data dimensionality reduction are presented as compared with the capabilities of Principal Component Analysis (PCA) and Hierarchical Cluster Analysis (HCA). The advantages of KNN become evident with increasing data dimensionality and size of the training set. Then, new methods are suggested to evaluate the quality of KNN models. Finally, a case study on chemical and biological data is presented. The database studied includes more than 2000 organophosphorous potent pesticides. The Kohonen maps were obtained which allow to distinguish compounds with different biological behavior.
authors.affiliation: Laboratory of Chemometrics, University of Orléans, France.
authors.forename: D B
authors.initials: DB
authors.lastname: Kirew
authors.forename: J R
authors.initials: JR
authors.lastname: Chretien
authors.forename: P
authors.initials: P
authors.lastname: Bernard
authors.forename: F
authors.initials: F
authors.lastname: Ros
mesh_terms: D016000:Cluster Analysis; D008956:Models, Chemical; D016571:Neural Networks, Computer; D004364:Pharmaceutical Preparations / Q000145:classification*; D013329:Structure-Activity Relationship
chemical_list: D004364:Pharmaceutical Preparations