Affiliations: [a] College of Artificial Intelligence, Nankai University, Tianjin, China | [b] Key Laboratory of Intelligent Robotics of Tianjin, Tianjin, China
Correspondence:
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Corresponding author: Zhongxin Liu, College of Artificial Intelligence, Nankai University, Tianjin 300350, China. E-mail: lzhx@nankai.edu.cn.
Abstract: Krill herd algorithm (KHA) is an emerging nature-inspired approach that has been successfully applied to optimization. However, KHA may get stuck into local optima owing to its poor exploitation. In this paper, the orthogonal learning (OL) mechanism is incorporated to enhance the performance of KHA for the first time, then an improved method named orthogonal krill herd algorithm (OKHA) is obtained. Compared with the existing hybridizations of KHA, OKHA could discover more useful information from historical data and construct a more promising solution. The proposed algorithm is applied to solve CEC2017 numerical problems, and its robustness is verified based on the simulation results. Moreover, OKHA is applied to tackle data clustering problems selected from the UCI Machine Learning Repository. The experimental results illustrate that OKHA is superior to or at least competitive with other representative clustering techniques.
Keywords: Global optimization, krill herd algorithm, orthogonal learning mechanism, data clustering
