Journal
COMBINATORIAL CHEMISTRY & HIGH THROUGHPUT SCREENING
Volume 12, Issue 4, Pages 409-423Publisher
BENTHAM SCIENCE PUBL LTD
DOI: 10.2174/138620709788167926
Keywords
Virtual screening; graph kernels; support vector machines
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Support vector machines and kernel methods have recently gained considerable attention in chemoinformatics. They offer generally good performance for problems of supervised classification or regression, and provide a flexible and computationally efficient framework to include relevant information and prior knowledge about the data and problems to be handled. In particular, with kernel methods molecules do not need to be represented and stored explicitly as vectors or fingerprints, but only to be compared to each other through a comparison function technically called a kernel. While classical kernels can be used to compare vector or fingerprint representations of molecules, completely new kernels were developed in the recent years to directly compare the 2D or 3D structures of molecules, without the need for an explicit vectorization step through the extraction of molecular descriptors. While still in their infancy, these approaches have already demonstrated their relevance on several toxicity prediction and structure-activity relationship problems.
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