【摘要】 在文本分类研究中,人们希望用特征权来改善文本分类效果。以最优分类器——贝叶斯分类器为基准分类器,研究了特征权对文本分类性能的可能影响。理论推导表明,就最优分类器而言,特征权不能有效提高文本分类效果。更多还原

【Abstract】 In the field of text categorization, researchers tend to use feature weights to promote the performance of text classifiers. Taking the optimal classifier-Bayesian classifier, as the benchmark, theoretical analysis was performed about the possible influence of feature weight on text categorization performance. Theoretical deduction proves that feature weight can not effectively improve the performance of text categorization if the text classifier is a Bayesian one.更多还原