title: A large descriptor set and a probabilistic kernel-based classifier significantly improve druglikeness classification.
abstract: Probabilistic support vector machine (SVM) in combination with ECFP_4 (Extended Connectivity Fingerprints) were applied to establish a druglikeness filter for molecules. Here, the World Drug Index (WDI) and the Available Chemical Directory (ACD) were used as surrogates for druglike and nondruglike molecules, respectively. Compared with published methods using the same data sets, the classifier significantly improved the prediction accuracy, especially when using a larger data set of 341 601 compounds, which further pushed the correct classification rates up to 92.73%. On the other hand, most characteristic features for drugs and nondrugs found by the current method were visualized, which might be useful as guiding fragments for de novo drug design and fragment based drug design.
authors: Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Structural Chemistry for Stable and Unstable Species, College of Chemistry and Molecular Engineering, and Center for Theoretical Biology, Peking University, 100871 Beijing, China.
authors: Qingliang
authors: Q
authors: Li
authors: Andreas
authors: A
authors: Bender
authors: Jianfeng
authors: J
authors: Pei
authors: Luhua
authors: L
authors: Lai
mesh_terms: D000465:Algorithms; D001185:Artificial Intelligence; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003627:Data Interpretation, Statistical; D016208:Databases, Factual; D015195:Drug Design; D016014:Linear Models; D015233:Models, Statistical; D004364:Pharmaceutical Preparations / Q000737:chemistry* / Q000145:classification*
chemical_list: D004364:Pharmaceutical Preparations