范畴变量
异常检测
计算机科学
异常(物理)
k-最近邻算法
探测器
数据挖掘
模式识别(心理学)
人工智能
机器学习
电信
物理
凝聚态物理
作者
Guansong Pang,Kai Ming Ting,David Albrecht
标识
DOI:10.1109/icdmw.2015.62
摘要
We introduce the concept of Least Similar Nearest Neighbours (LeSiNN) and use LeSiNN to detect anomalies directly. Although there is an existing method which is a special case of LeSiNN, this paper is the first to clearly articulate the underlying concept, as far as we know. LeSiNN is the first ensemble method which works well with models trained using samples of one instance. LeSiNN has linear time complexity with respect to data size and the number of dimensions, and it is one of the few anomaly detectors which can apply directly to both numeric and categorical data sets. Our extensive empirical evaluation shows that LeSiNN is either competitive to or better than six state-of-the-art anomaly detectors in terms of detection accuracy and runtime.
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