Theoretical Basis of Novelty Detection in Time Series Using Negative Selection Algorithms

Author(s):  
Rafał Pasek



2005 ◽  
Vol 293-294 ◽  
pp. 71-78 ◽  
Author(s):  
Yong Gui Dong ◽  
Ensheng Dong ◽  
Huibo Jia ◽  
Wener Lv

In case of mechanical system health monitoring, a need to develop normal-knowledge based novelty detection techniques is increasing. The negative selection algorithm, which is inspired from the operation mechanism of human immune system, is one of such approaches. Our approach is to apply the idea for the anomaly detection in the vibration time series of the rotor system. A real-valued negative selection algorithm based on Euclidean distance, as well as cosine similarity, has been implemented. By means of adding the corresponding coverage radius to each antibody elements, the detection efficiency of each antibody element is increased. The detection efficiency is evaluated with simulated data as well as vibration signal sampled from one rotor system. The results indicate that the algorithm can efficiently detect the anomaly in time series data. Moreover, the number of detectors in antibody set is less enough for potential application in online signal monitoring.





Author(s):  
T.K. Horiuchi ◽  
R. Etienne-Cummings


2013 ◽  
Vol 411-414 ◽  
pp. 2007-2012
Author(s):  
Kun Peng Wang

In this article, we present a new negative selection algorithm which the self-data is organized as a R-Tree structure. And the negative selection process could be transformed into the data query process in the self-R-Tree, if a new detector is indexed in any leaf node it will be dropped. As the time complexity of data query process in the tree is in the log level, the negative selection process of our algorithm is superior to the linearly comparation procedure in the traditional negative selection algorithms.



2017 ◽  
Vol 23 (5) ◽  
pp. 4586-4590 ◽  
Author(s):  
Nurul Fadhilah Sulaiman ◽  
Mohd Zalisham Jali ◽  
Zul Hilmi Abdullah ◽  
Shaharudin Ismail


2009 ◽  
Vol 179 (10) ◽  
pp. 1407-1425 ◽  
Author(s):  
Michał Bereta ◽  
Tadeusz Burczyński


2013 ◽  
Vol 2013 ◽  
pp. 1-15 ◽  
Author(s):  
Ruirui Zhang ◽  
Tao Li ◽  
Xin Xiao

Negative selection algorithm is one of the main algorithms of artificial immune systems. However, candidate detectors randomly generated by traditional negative selection algorithms need to conduct self-tolerance with all selves in the training set in order to eliminate the immunological reaction. The matching process is the main time cost, which results in low generation efficiencies of detectors and application limitations of immune algorithms. A novel algorithm is proposed, named GB-RNSA. The algorithm analyzes distributions of the self set in real space and regards then-dimensional [0, 1] space as the biggest grid. Then the biggest grid is divided into a finite number of sub grids, and selves are filled in the corresponding subgrids at the meantime. The randomly generated candidate detector only needs to match selves who are in the grid where the detector is and in its neighbor grids, instead of all selves, which reduces the time cost of distance calculations. And before adding the candidate detector into mature detector set, certain methods are adopted to reduce duplication coverage between detectors, which achieves fewer detectors covering the nonself space as much as possible. Theory analysis and experimental results demonstrate that GB-RNSA lowers the number of detectors, time complexity, and false alarm rate.



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