网页分类中特征提取方法的比较与改进

THE COMPARISON AND IMPROVEMENT OF FEATURE-SELECTION METHOD IN WEB PAGE CLASSIFICATION

在传统的特征提取算法的基础上,对CHI公式做了两点改进,并结合KNN算法进行了分类测试比较,通过实验证明本文所采用的特征词提取方式,在一定程度上,能够得到较高的分类准确率,存在一定的合理性.

The document, on the basis of traditional feature extraction algorithm, makes two improvements on CHI formula and makes classification testing comparison combined with KNN algorithm. It proves via experiment that the feature extraction method adopted in the document can acquire higher classification accuracy rate and certain nationality on certain degree.