基于图的特征选择算法

摘要

针对数据挖掘与模式识别领域中的高维数据处理问题,通过分析样本类间距离与类内距离,给出一种基于图理论的特征排序框架.根据该框架,提出使用类内一类间和K近邻相似度定义的2种快速特征选择算法,能避免复杂度较高的广义特征分解过程.实验结果表明,该算法具有较高的分类精度.%The high dimensionality of the data samples often makes the data mining or pattern recognition tasks intractable, through analyzing both the within-class distance and between-class distance, it presents a fast feature ranking framework, from which the computationally expensive feature decomposition is avoided. Two similarity measures of within-class and between-class similarity and K nearest neighbor similarity are employed to derive efficient feature selection algorithms. Experimental results demonstrate that these algorithms have higher classification precision.