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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.
The traditional sample-based mutual information estimation method can not directly deal with discrete and continuous mixed attributes.In this paper, we give a mutual information estimation method (PG method) that can directly deal with mixed attributes.In order to better consider the relationship between attributes , A criterion of feature selection called HMI is proposed.A new feature selection method (PG-HMI) is proposed by combining PG mutual information estimation method and HMI feature selection criterion.The experimental results verify the rationality of PG mutual information estimation method and PG The effectiveness of HMI feature selection method.