%0 Journal Article
%T Detecting traffic anomalies at application layer in metro area network<br>城域网应用层流量异常检测与分析*
%A PEI Wei
%A YUAN Xiao-fang
%A WANG Dong
%A DONG Zhi-chao
%A XIE Gao-gang
%A <br>裴唯
%A 袁小坊
%A 王东
%A 董智超
%A 谢高岗
%J 计算机应用研究
%D 2010
%I 
%X This paper constructed a traffic data matrix with the application layer metrics provided by the measurement system developed by ourselves. Applied wavelet analysis to deal with the noise of raw data, and then used PCA method to model the traffic. Experiments show that traffic anomalies can be effectively monitored with SPE statistic, and the main causes of the anomalies can be found out with contribution plot of SPE statistic.
%K 主元分析
%K 小波去噪
%K 平方预测误差统计量
%K 贡献图
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=A9D9BE08CDC44144BE8B5685705D3AED&aid=0BF083BB9A665420B28C85B3FD24736F&yid=140ECF96957D60B2&vid=DB817633AA4F79B9&iid=B31275AF3241DB2D&sid=BBE4941DB42FA885&eid=86C17F046E2342EE&journal_id=1001-3695&journal_name=计算机应用研究&referenced_num=1&reference_num=12