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中文摘要：
传统的基于样本的互信息估计方法不能直接处理离散、连续属性混合的情况．本文给出一种能够直接处理混合属性的互信息估计方法（PG法）．为了更好地考虑属性之间的关联，提出名为HMI的特征选择准则．结合PG互信息估计方法和HMI特征选择准则，给出一种新的特征选择方法（PG—HMI）．实验结果验证PG互信息估计法的合理性及PG—HMI特征选择方法的有效性．
英文摘要：
Conventional sample-based mutual information estimation methods can＇t handle the mixed features directly that include both numeric attributes and nominal attributes. A Parzen window based general mutual information calculation method, PG method, is proposed in this paper, which could deal with the mixed attributes directly. A criterion named hybrid mutual information （HMI） is presented. Based on PG mutual information estimation method and HMI feature selection criterion, a feature selection algorithm （PG-HMI） is proposed. Experimental results show the correctness of PG and the effectiveness of PG-HMI.
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