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A Multi-Strategy whale optimization algorithm and Its Application

ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE 2022年第0期108卷 104558-104558页

作者： Yang, Wenbiao Xia, Kewen Fan, Shurui Wang, Li Li, Tiejun Zhang, Jiangnan Feng, Yu Hebei Univ Technol Sch Elect & Informat Engn Tianjin 300401 Peoples R China Hebei Univ Technol Sch Mech Engn Tianjin 300401 Peoples R China

whale optimization algorithm (WOA) is a key tool for solving complex engineering optimization problems, aiming at adjusting important parameters to satisfy constraints and optimal objectives. WOA has a simple structure, few parameters, high search capability, and easy implementation. However, it suffers from the same problems as other metaheuristic algorithms of being prone to local optima and slow convergence, for which the Multi-Strategy whale optimization algorithm (MSWOA) is proposed. Four strategies are introduced in MSWOA. Firstly, a highly randomized chaotic logistic map is used to generate a high-quality initial population. Secondly, exploitation and exploration are enhanced by setting adaptive weights and dynamic convergence factors. Further, a Levy flight mechanism is introduced to maintain the population diversity in each iteration. Finally, the Evolutionary Population Dynamics (EPD) mechanism is introduced to improve the efficiency of search agents in finding the optimum. Another problem lies in the Semi-Supervised Extreme Learning Machine (SSELM) based on manifold regularization is an effective classification and regression model, but the random generation of input weights and hidden layer thresholds and the grid selection of hyperparameters lead to unsatisfactory classification performance. To this end, we developed the MSWOA-SSELM model, optimally selected the parameters of SSLEM using MSWOA, and applied it to logging layer recognition, which effectively improved the accuracy of logging interpretation. By comparing the experiments with 14 swarm intelligence algorithms on 18 benchmark test functions, the CEC2017 benchmark suite, and an engineering application problem, the experimental results show that MSWOA is significantly superior and effective in solving global optimization problems. Finally, the proposed MSWOA-SSELM is applied in three wells and outperforms other classification models in terms of Accuracy (ACC), Root Mean Square Error (RMSE), and

关键词： whale optimization algorithm Semi-supervised extreme learning machine Levy flight mechanism Evolutionary population dynamics Oil layer recognition

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Hybrid whale optimization algorithm enhanced with Levy flight and differential evolution for job shop scheduling problems

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APPLIED SOFT COMPUTING 2020年 87卷 105954-000页

作者： Liu, Min Yao, Xifan Li, Yongxiang South China Univ Technol Sch Mech & Automot Engn Guangzhou 510640 Guangdong Peoples R China Guizhou Univ Engn Sci Sch Mech Engn Bijie 551700 Guizhou Peoples R China

The job shop scheduling problem (JSSP) has been a hot issue in manufacturing. For the past few decades, scholars have been attracted to research JSSP and proposed many novel meta-heuristic algorithms to solve it. whale optimization algorithm (WOA) is such a novel meta-heuristic algorithm and has been proven to be efficient in solving real-world optimization problems in the literature. This paper proposes a hybrid WOA enhanced with Levy flight and differential evolution (WOA-LFDE) to solve JSSP. By changing the expression of Levy flight and DE search strategy, Levy flight enhances the abilities of global search and convergence of WOA in iteration, while DE algorithm improves the exploitation and local search capabilities of WOA and keeps the diversity of solutions to escape local optima. It is then applied to solve 88 JSSP benchmark instances and compared with other state-of-art algorithms. The experimental results and statistical analysis show that the proposed algorithm has superior performance over contesting algorithms. (C) 2019 Elsevier B.V. All rights reserved.

关键词： Job shop scheduling problem whale optimization algorithm Levy flight Differential evolution

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A cooperative whale optimization algorithm for energy-efficient scheduling of the distributed blocking flow-shop with sequence-dependent setup time

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COMPUTERS & INDUSTRIAL ENGINEERING 2023年第1期178卷

作者： Zhao, Fuqing Xu, Zesong Bao, Haizhu Xu, Tianpeng Zhu, Ningning Jonrinaldi Lanzhou Univ Technol Sch Comp & Commun Lanzhou 730050 Peoples R China Univ Andalas Dept Ind Engn Padang 25163 Indonesia

The distributed blocking flow-shop sequence-dependent scheduling problem (DBFSDSP) with the production efficiency measures has been extensively concerned as its wide industrial applications. Whereas, energy effi-ciency indicators are often ignored in the literature. The DBFSDSP considered makespan, total tardiness, and total energy consumption is investigated in this paper. A cooperative whale optimization algorithm (CWOA) is proposed to solve the DBFSDSP as the complexity of the distributed and multi-objective optimization. First, the critical path of DBFSDSP is defined. An energy-saving operation for the non-critical path is designed to reduce the energy consumption of the system. Second, an accelerated operation for the critical path is designed to reduce the makespan and total tardiness. Third, three acceptance criteria for multi-objective optimization are proposed to improve the diversity of the population. The statistical and computational experimentation in an extensive benchmark testified that the CWOA outperforms the state-of-the-art algorithms regarding efficiency and sig-nificance in solving DBFSDSP.

关键词： Distributed scheduling Blocking flow -shop whale optimization algorithm Energy-efficient scheduling Sequence-dependent setup times

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Weapon-Target Assignment Using a whale optimization algorithm

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INTERNATIONAL JOURNAL OF COMPUTATIONAL INTELLIGENCE SYSTEMS 2023年第1期16卷 62-62页

作者： Zhang, Jinzhong Kong, Min Zhang, Gang Huang, Yourui West Anhui Univ Sch Elect & Optoelect Engn Luan 237012 Peoples R China

The weapon-target assignment (WTA) is a well-known task distribution issue in complicated combinational optimization, which is essential to management and decision-making in marine coordinated combat. This paper proposes a whale optimization algorithm (WOA) to address the WTA and the purpose was to maximize the combat effectiveness and determine the greatest decision matrix while equitably distributing the weapon unit resources of the weapon systems to the threat targets. The WOA is based on the whales' bubble-net assaulting behavior that mimics encompassing contraction strategy, bubble-net assaulting strategy and random hunting strategy to successfully resolve the optimization issue. The WOA not only has excellent stability and robustness to determine a quicker convergence speed and greater calculation accuracy but also utilizes exploration or exploitation to avoid search stagnation and accomplish the most effective solution. Four sets of experiments are utilized to confirm the superiority and productivity of the WOA, the results are compared with those of AOA, BA, GWO, MVO, SCA, SOA, SSA and TSA by maximizing the fitness value. The experimental results demonstrate that WOA has a greater convergence precision and stronger optimization efficiency, which is a practical and feasible method to satisfy the fundamental requirements of real-time decision-making.

关键词： Weapon-target assignment whale optimization algorithm Weapon system Decision matrix Combat effectiveness

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A novel combined model based on echo state network optimized by whale optimization algorithm for blast furnace gas prediction

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ENERGY 2023年第1期279卷

作者： Wen, Shizhao Wang, Hongzeng Qian, Jinhua Men, Xuanyu Northeastern Univ Dept Math Shenyang Peoples R China

The accurate prediction of blast furnace gas (BFG) holder level is crucial for reasonable gas dispatch. Therefore, we propose an improved echo-state network (ESN) model, based on variational modal decomposition (VMD) and whale optimization algorithm (WOA), for the BFG system. This model extracts inherent characteristic components of the sequence using VMD for prediction and determines model inputs via partial autocorrelation functions (PACF). ESN effectively handles the shortcomings of other classical neural networks with many training parameters and slow calculation speed. The important parameters are optimized through WOA to improve the prediction accuracy of the proposed model. Based on our proposed model, the average MAPE of three datasets is 0.1805% for 1-Step prediction, 0.1829% for 3-Step prediction, and 0.1886% for PACF prediction. With high prediction accuracy for BFG holder level, our model takes less time to establish and calculate, meeting requirements for short-term level prediction and more reasonable BFG scheduling decisions. The experiments and discussions support the correctness, effectiveness, and superiority of our model.

关键词： Blast furnace gas Short-term forecasting Variational modal decomposition Echo state network whale optimization algorithm

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A Location Method for Partial Discharge Using Time Reversal and Improved whale optimization algorithm

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IEEE ACCESS 2020年 8卷 171977-171987页

作者： Ma, Pengchi Wang, Zhijie Liu, Yonghui Shen, Pan Wang, Hong Fu, Xiaolin Yang, Wanhao Shanghai Dianji Univ Coll Elect Engn Shanghai 201306 Peoples R China Jiangsu Hongyuan Elect Co Ltd Nanjing 211100 Peoples R China Tongji Univ Sch Econ & Management Shanghai 200092 Peoples R China

Time difference of arrival method is commonly used in the location of partial discharges. In this method, the main problem are as follows: (1) time delay error is inevitable. (2) location algorithm is sensitive to time delay error. To solve the problems above, an ultra-high frequency localization method for transformer partial discharge based on time reversal and improved whale optimization algorithm is proposed in this article. The method is consisted of three parts, that including time delay extraction, time reversal imaging and optimal solution. Firstly, the time delay is extracted by energy accumulation method. And then the approximate position of partial discharge source is determined by time reversal imaging. Combined with the time reversal imaging, the strategy of initial population selection and weight setting in the whale optimization algorithm is improved. Finally, the improved whale optimization algorithm is used to solve the optimal solution. The results are demonstrated through simulation and experiment. Compared with other localization algorithms, it is shown that the improved whale optimization algorithm has a better control performance in stability and accuracy.

关键词： Partial discharges whales optimization Delay effects Focusing Interference Transformer partial discharge ultra-high frequency time reversal whale optimization algorithm location method

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Health-aware multi-stage charging strategy for lithium-ion batteries based on whale optimization algorithm

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JOURNAL OF ENERGY STORAGE 2022年 55卷

作者： Zhao, Guanghui Wang, Yujie Chen, Zonghai Univ Sci & Technol China Dept Automat Hefei 230027 Peoples R China

Lithium-ion batteries are widely used in electronics, new energy electric vehicles and energy storage plants. They have become ideal energy storage devices for their excellent characteristics of high energy density, low self-discharge rate, low carbon and environmental protection. Thus, research on lithium-ion batteries has wide scientific and engineering significance. To promote the application of lithium-ion batteries, the charging speed and aging rate of the lithium-ion batteries should be optimized to improve the convenience and economics for using them. Therefore, in this paper, a health-aware multi-stage charging strategy is presented based on the whale optimization algorithm. Specifically, the electrical model, thermal model, and the semi-empirical aging model are established firstly. Then the multi-stage charging optimization strategy considering charging time and battery health loss is proposed. The whale optimization algorithm is presented to obtain the optimal current value at each stage, followed by exploring the factors affecting the charging performance which include fitness function weight, cut-off voltage and current stage number. Compared with constant current (CC) charging, the total fitness function loss decreased by 34.64%, and the charging time decreased by 11.45%. This paper provides audiences with a strategy to meet the trade-off between charging rapidity and battery life in different scenarios by setting the optimization weights.

关键词： Lithium-ion batteries Optimal charging strategy whale optimization algorithm Semi-empirical aging model

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Short-term traffic flow prediction based on whale optimization algorithm optimized BiLSTM_Attention

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CONCURRENCY AND COMPUTATION-PRACTICE & EXPERIENCE 2022年第10期34卷 e6782-e6782页

作者： Xu, Xing Liu, Chengxing Zhao, Yun Lv, Xiaoshu Zhejiang Univ Sci & Technol Sch Mech & Energy Engn Hangzhou Peoples R China Zhejiang Univ Sci & Technol Sch Informat & Elect Engn Hangzhou Peoples R China Univ Vaasa Dept Elect Engn & Energy Technol Vaasa Finland Aalto Univ Dept Civil Engn Espoo Finland

With the growths in population and vehicles, traffic flow becomes more complex and uncertain disruptions occur more often. Accurate prediction of urban traffic flow is important for intelligent decision-making and warning, however, remains a challenge. Many researchers have applied neural network methods, such as convolutional neural networks and recurrent neural networks, for traffic flow prediction modeling, but training the conventional network that can obtain the best network parameters and structure is difficult, different hyperparameters lead to different network structures. Therefore, this article proposes a traffic flow prediction model based on the whale optimization algorithm (WOA) optimized BiLSTM_Attention structure to solve this problem. The traffic flow is predicted first using the BiLSTM_Attention network which is then optimized by using the WOA to obtain its four best parameters, including the learning rate, the training times, and the numbers of the nodes of two hidden layers. Finally, the four best parameters are used to build a WOA_BiLSTM_Attention model. The proposed model is compared with both conventional neural network model and neural network model optimized by the WOA. Based on the evaluation metrics of MAPE, RMSE, MAE, and R2, the WOA_BiLSTM_Attention model proposed in this article presents the best performance.

关键词： attention BiLSTM prediction traffic flow whale optimization algorithm

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Research on Parameter Inversion of Coal Mining Subsidence Prediction Model Based on Improved whale optimization algorithm

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ENERGIES 2024年第5期17卷 1158页

作者： Guo, Qingbiao Qiao, Boqing Yang, Yingming Guo, Junting State Key Lab Water Resource Protect & Utilizat Co Beijing 100000 Peoples R China Anhui Univ Sci & Technol Sch Spatial Informat & Geomat Engn Huainan 232001 Peoples R China

Rapid coal mining results in a series of mining subsidence damages. Predicting surface movement and deformation accurately is essential to reducing mining damage. The accurate determination of parameters for a mining subsidence prediction model is crucial for accurately predicting mining subsidence. In this research, with the incorporation of the Sobol sequence and Levy flight strategy, we propose an improved whale optimization algorithm (IWOA), thereby enhancing its global optimization capability and mitigating local optimization issues. Our simulation experiment results demonstrate that the IWOA achieved a root mean square error and relative error of less than 0.42 and 0.27%, respectively, indicating its superior accuracy compared to a basic algorithm. The IWOA inversion model also exhibits superior performance compared to a basic algorithm in mitigating gross error interference, Gaussian noise interference, and missing observation point interference. Additionally, it demonstrates enhanced global search capabilities. The IWOA was employed to perform parameter inversion for the working face 1414(1) in Guqiao Coal Mine. The root mean square error of the inversion results did not exceed 6.03, while the subsidence coefficient q, tangent of the main influence angle tan beta, horizontal movement coefficient b, and mining influence propagation angle theta were all below 0.32. The average value of the fitted root mean square error for the subsidence value's fitted root mean square error and horizontal movement value's fitted root mean square error of the IWOA was 91.51 mm, which satisfies the accuracy requirements for general engineering applications.

关键词： mining subsidence whale optimization algorithm Sobol sequence Levy flight probability integral method parameter inversion

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A novel path planning approach for AUV based on improved whale optimization algorithm using segment learning and adaptive operator selection

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OCEAN ENGINEERING 2023年第1期280卷

作者： Huang, Yujie Li, Yibing Zhang, Zitang Sun, Qian Harbin Engn Univ Coll Informat & Commun Harbin 150001 Peoples R China Minist Ind & Informat Technol Key Lab Adv Marine Commun & Informat Technol Harbin 150001 Peoples R China

A novel path planning approach for autonomous underwater vehicles is proposed in this paper. It seeks a better navigation path under complex terrain and uncertain ocean currents. On the one hand, this problem is converted into a deterministic optimization problem using the order relation of interval number and vector analysis method. On the other hand, the whale optimization algorithm using segment learning and adaptive operator selection is proposed to solve this problem. Firstly, the elite and edge sets are judged by fitness and Euclidean distance, respectively. Based on them, a dynamic partitioning strategy and a weighted mean strategy are used to construct virtual individuals. The virtual individuals are incorporated into the whale optimization algorithm to construct an evolutionary pool, which can realize the balance between exploration to exploitation to improve the search ability of the algorithm. Second, an adaptive operator selection mechanism considering individual preferences is added to the algorithm. This mechanism uses the operators' historical information and future projections to guide the individual in choosing an appropriate evolutionary operator. The simulation results show that the robustness and search capability of the algorithm presented in this study are more potent than other comparative algorithms.

关键词： Path planning Autonomous underwater vehicle Uncertain ocean currents whale optimization algorithm Segment learning Adaptive operator selection

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