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  2021, Vol. 34 Issue (10): 873-884    DOI: 10.16451/j.cnki.issn1003-6059.202110001
Adaptive Learning for Classification and Clustering Current Issue| Next Issue| Archive| Adv Search |
Class-Aware Based KNN Classification Method
BIAN Zekang1, ZHANG Jin1, WANG Shitong1,2
1. School of Artificial Intelligence and Computer Science, Jiangnan University, Wuxi 214122
2. Jiangsu Key Construction Laboratory of Internet of Things App-lication Technology, Wuxi Taihu University, Wuxi 214064

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Abstract  Many conventional classification methods start with the hypothesis that the distribution of training samples is same as or at least similar to that of testing samples. In many practical applications, it is difficult to agree with the above hypothesis. And thus the classification performance of some traditional methods, such as support vector machine, is reduced. Therefore, a class-aware based KNN classification method(CA-KNN) is proposed. A sparse representation model is proposed based on the assumption that any testing sample can be represented sparsely by the training samples. The class label information is utilized effectively by CA-KNN to improve the accuracy of the sparse representation. The idea of nearest neighbor classification of KNN is introduced to improve the generalization capability of CA-KNN . And it is proved in theory that CA-KNN classifier is directly related to Bayes decision rule for the minimum error. The experimental and theoretical results show that CA-KNN generates better classification performance.
Key wordsClass-Aware      Sparse Representation      K Nearest Neighbor Classification      Bayes Decision Rule for Minimum Error     
Received: 21 June 2021     
ZTFLH: TP 181  
Fund:National Natural Science Foundation of China(No.61972181,61772198), Natural Science Foundation of Jiangsu Province(No.BK20191331), Internet of Things Application of Jiangsu Province Key Construction Laboratory 2020 Open Project(No.WXWL01)
Corresponding Authors: WANG Shitong, master, professor. His research interests include artificial intelligence and pattern recognition.   
About author:: BIAN Zekang, Ph.D. candidate. His research interests include artificial intelligence and pattern recognition.
ZHANG Jin, Ph.D. candidate. His research interests include artificial intelligence and pattern recognition.
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BIAN Zekang
ZHANG Jin
WANG Shitong
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BIAN Zekang,ZHANG Jin,WANG Shitong. Class-Aware Based KNN Classification Method[J]. , 2021, 34(10): 873-884.
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http://manu46.magtech.com.cn/Jweb_prai/EN/10.16451/j.cnki.issn1003-6059.202110001      OR     http://manu46.magtech.com.cn/Jweb_prai/EN/Y2021/V34/I10/873
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