Journal
EXPERT SYSTEMS WITH APPLICATIONS
Volume 129, Issue -, Pages 135-155Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eswa.2019.03.043
Keywords
Moth-flame optimization algorithm; Parameter optimization; Chaotic local search; Gaussian mutation; Kernel extreme learning machine
Categories
Funding
- Science and Technology Plan Project of Wenzhou, China [ZG2017019]
- Zhejiang Provincial Natural Science Foundation of China [LY17F020012]
- Graduate Scientific Research Foundation of Wenzhou University [3162018024]
- Guangdong Natural Science Foundation [2018A030313339]
- MOE (Ministry of Education in China) Youth Fund Project of Humanities and Social Sciences [17YJCZH261]
- National Natural Science Foundation of China [61471133, 61871475]
- Medical and Health Technology Projects of Zhejiang Province [2019RC207]
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Moth-flame optimization algorithm (MFO) is a new nature-inspired meta-heuristic based on the navigation routine of moths in the environment known as transverse orientation. For some complex optimization tasks, especially high dimensional and multimodal problems, the conventional MFO may face problems in the convergence trends or be trapped into the local and deceptive optima. Therefore, in this study, two strategies have been introduced into the conventional MFO to get a more stable sense of balance between the exploration and exploitation propensities. First, Gaussian mutation is employed to increase the population diversity of MFO. Then, a chaotic local search is applied to the flame updating process of MFO for better exploiting the locality of the solutions. The proposed CLSGMFO approach was compared against a wide range of well-known classical metaheuristic algorithms (MAs) and various advanced MAs using 23 classical benchmark functions. It was shown that the designed CLSGMFO can outperform most of the popular MAs in terms of solution quality and convergence speed. Moreover, based on CLSGMFO, a hybrid kernel extreme learning machine model, which is called CLSGMFO-KELM, is established to deal with financial stress prediction scenarios. To investigate the effectiveness of the CLSGMFO-KELM model, the proposed hybrid system was tested on two widely used financial datasets and compared against a broad array of popular classifiers. The results demonstrate that the proposed learning scheme can offer a superior kernel extreme learning machine model with excellent predictive performance. Accordingly, the proposed CLSGMFO can serve as an effective and efficient computer-aided tool for financial prediction. (C) 2019 Elsevier Ltd. All rights reserved.
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