A real value negative selection algorithm based on antibody evolution for anomaly detection

2018 ◽  
Author(s):  
Tao Yang ◽  
Wen Chen ◽  
Zhengjun Liu ◽  
Ping Lin
Keyword(s):  
Anomaly Detection ◽  
Negative Selection ◽  
Selection Algorithm ◽  
Negative Selection Algorithm ◽  
Real Value

An improved real-valued negative selection algorithm based on the constant detector for anomaly detection

2021 ◽  
Vol 40 (5) ◽  
pp. 8793-8806
Author(s):  
Dong Li ◽  
Xin Sun ◽  
Furong Gao ◽  
Shulin Liu
Keyword(s):  
Anomaly Detection ◽  
False Alarm ◽  
State Space ◽  
False Alarm Rate ◽  
Negative Selection ◽  
Detection Rate ◽  
Detection Methods ◽  
Selection Algorithm ◽  
Negative Selection Algorithm ◽  
Synthetic Datasets

Compared with the traditional negative selection algorithms produce detectors randomly in whole state space, the boundary-fixed negative selection algorithm (FB-NSA) non-randomly produces a layer of detectors closely surrounding the self space. However, the false alarm rate of FB-NSA is higher than many anomaly detection methods. Its detection rate is very low when normal data close to the boundary of state space. This paper proposed an improved FB-NSA (IFB-NSA) to solve these problems. IFB-NSA enlarges the state space and adds auxiliary detectors in appropriate places to improve the detection rate, and uses variable-sized training samples to reduce the false alarm rate. We present experiments on synthetic datasets and the UCI Iris dataset to demonstrate the effectiveness of this approach. The results show that IFB-NSA outperforms FB-NSA and the other anomaly detection methods in most of the cases.

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