中文摘要：

通过对当前有代表性的离群数据检测方法的分析和比较,总结了各方法的特性及优缺点.针对大数据的数据量大、维数高的特性,分析了离群点检测方法的改进策略,并以T-ODCD算法和AROD算法为例,进一步说明离群点检测改进策略.

英文摘要：

The paper compared and analyzed major outlier detection method and their features and merit and demerit were summarized. In addition,in view of the large amount of data and high dimension of the big data,improvement strategies of outlier detection method were analyzed. Improvement strategies of outlier detection were further illustrated by T-ODCD and AROD algorithms.