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文件名称：svm数据挖掘挖掘挖掘挖掘挖掘挖掘挖掘
文件大小：287KB
文件格式：PDF
更新时间：2013-12-07 15:19:03
挖掘
SVMs (Support Vector Machines) are a useful technique for data classi cation. Al-
though SVM is considered easier to use than Neural Networks, users not familiar with
it often get unsatisfactory results at rst. Here we outline a \cookbook" approach
which usually gives reasonable results.
Note that this guide is not for SVM researchers nor do we guarantee you will
achieve the highest accuracy. Also, we do not intend to solve challenging or di-
cult problems. Our purpose is to give SVM novices a recipe for rapidly obtaining
acceptable results.
Although users do not need to understand the underlying theory behind SVM, we
brie
y introduce the basics necessary for explaining our procedure. A classi cation
task usually involves separating data into training and testing sets. Each instance
in the training set contains one \target value" (i.e. the class labels) and several
\attributes" (i.e. the features or observed variables). The goal of SVM is to produce
a model (based on the training data) which predicts the target values of the test data
given only the test data attributes.