And the TF-IDF based and explicit feedback based models were also constructed for performance comparison.
为了对比,本文也引入了基于TF - IDF的和显示反馈的用户模型。
2
To make up for the original TF-IDF formula defects, an improved TF-IDF formula, which combines concentration of a feature among categories, distribution of a feature in category, is proposed.
To verify efficiency of the new feature selection approach and improved TF-IDF formula, a multi-set of experiments base on the Chinese text categorization test system platform have been taken.