不均衡数据集中基于Adaboost的过抽样算法  

Over-sampling Algorithm Based on Adaboost in Unbalanced Data Set

作　　者：韩慧[1] 王文渊[1] 毛炳寰[2] 

机构地区：[1]清华大学自动化系,北京100084 [2]中央财经大学统计系,北京100081

出　　处：《计算机工程》2007年第10期207-209,共3页Computer Engineering

摘　　要：为了提高不均衡数据集中少数类的分类性能,该文融合了提升和过抽样的优点,提出了基于提升算法Adaboost的过抽样算法MCMO-Boost,并且将其与决策树算法C4.5、提升算法Adaboost和过抽样算法SMOTE进行了实验比较与分析。结果表明,MCMO-Boost算法在少数类和数据集的总体分类性能方面都优于其它算法。To improve the classification performance of minority class, this paper combines the advantages of boosting and over-sampling, and presents an over-sampling algorithm based on MCMO-Boost of Adaboost. MCMO-Boost is compared with C4.5, Adaboost and SMOTE, and the results show that MCMO-Boost performs better than others for the classification performance of minority class and the whole data set.

关 键 词：不均衡数据集 过抽样 提升算法 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]