李国臣. 文本分类中基于对数似然比测试的特征词选择方法[J]. 中文信息学报, 1999, 13(4): 17-22.
Li Guochen. A Log-Likelihood-Ratio-Test-Based Feature Word Selection Approach in Text Categorization. , 1999, 13(4): 17-22.
文本分类中基于对数似然比测试的特征词选择方法
李国臣
山西大学计算机科学系
A Log-Likelihood-Ratio-Test-Based Feature Word Selection Approach in Text Categorization
Li Guochen
Department of Computer Science , Shanxi University
Abstract：The paper uses the Log-Likelihood-Ratio-Test-Based feature words selection approach in the field of text categorization. In comparison with the traditional method , that is , each of the frequecy test , salience test and distributioness test is conducted independently , the proposed approach uses covariance matrix to coordinate the associations among the variant statistics so that all of them are integrated into a whole. The experiments show that the approach is superior to the t raditional approach.
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