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arXiv 0708.0171q-bio.QMcs.LG
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基于支持向量机和结构核的虚拟筛选

Virtual screening with support vector machines and structure kernels

Xerox Research Center Europe(施乐欧洲研究中心);Centre for Computational Biology, Ecole des Mines de Paris(巴黎矿业学院计算生物学中心)

Pierre Mahé, Jean-Philippe Vert

摘要:

支持向量机和核方法近年来在化学信息学中得到了广泛的关注。它们为监督分类或回归问题提供了良好的性能,并提供了一个灵活且计算效率高的框架,以包含有关数据和待处理问题的相关信息和先验知识。特别地,使用核方法,分子不需要被明确地表示和存储为向量或指纹,而仅需要通过技术上称为核的比较函数来相互比较。虽然经典的内核可以用于比较分子的矢量或指纹表示,但近年来开发了全新的内核来直接比较分子的2D或3D结构,而不需要通过提取分子描述符进行明确的矢量化步骤。虽然仍处于起步阶段,这些方法已经证明了其相关性的几个毒性预测和结构-活性关系的问题。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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