Article
Computer Science, Artificial Intelligence
Mahdis Banaie-Dezfouli, Mohammad H. Nadimi-Shahraki, Zahra Beheshti
Summary: The paper proposes a representative-based grey wolf optimizer (R-GWO) to address the weaknesses of GWO, introducing a search strategy that enhances exploration and diversity. Experimental results demonstrate that R-GWO outperforms competitor algorithms on most benchmark functions and engineering design problems, with an overall effectiveness of 95.4%.
APPLIED SOFT COMPUTING
(2021)
Article
Computer Science, Interdisciplinary Applications
Runqian Ma, Misagh Karimzadeh, Aria Ghabussi, Yousef Zandi, Shahrizan Baharom, Abdellatif Selmi, Nelson Maureira-Carsalade
Summary: This study investigated the structural behavior of simply supported Composite Beams (CBs) jointed with concrete slabs and steel parts. By using a hybrid Extreme machine learning-Grey wolf optimizer algorithm, the performance was compared, showing that the GWO-ELM hybrid model performed better and was more reliable than the solo ELM and GWO models.
ENGINEERING WITH COMPUTERS
(2022)
Article
Computer Science, Information Systems
Ervin Galan-Uribe, Luis Morales-Velazquez
Summary: Robotic systems are crucial for technological development in various sectors, and optimizing robots for specific tasks is essential for improved performance. Bio-inspired algorithms HHO and GWO were applied in this study for robot arm design optimization, with HHO proving to be the best technique for optimal robot design.
Article
Computer Science, Interdisciplinary Applications
Mohammad H. Nadimi-Shahraki, Shokooh Taghian, Seyedali Mirjalili, Hoda Zamani, Ardeshir Bahreininejad
Summary: In this article, a variant of the grey wolf optimizer called gaze cues learning-based grey wolf optimizer (GGWO) is proposed to address the issues of premature convergence, local optima trapping, and stagnation in GWO algorithm. The GGWO algorithm combines neighbor gaze cues learning and random gaze cues learning to enhance exploitation ability and diversity, and achieve a balance between exploration and exploitation. Experimental results demonstrate that the GGWO algorithm performs competitively and effectively in solving engineering problems.
JOURNAL OF COMPUTATIONAL SCIENCE
(2022)
Article
Computer Science, Artificial Intelligence
Jesus Aguila-Leon, Carlos Vargas-Salgado, Cristian Chinas-Palaciosa, Dacil Diaz-Bello
Summary: This study proposes a Maximum Power Point Tracking controller based on the Grey Wolf Optimization algorithm, which outperforms traditional techniques in various test scenarios, with higher output power, efficiency, and faster response time.
EXPERT SYSTEMS WITH APPLICATIONS
(2023)
Article
Computer Science, Artificial Intelligence
Jianhua Jiang, Ziying Zhao, Yutong Liu, Weihua Li, Huan Wang
Summary: This paper proposes an improved Grey Wolf Optimizer algorithm (DSGWO) to address the issues of poor population diversity and weak global search capability in the original GWO algorithm. DSGWO significantly improves the algorithm's performance through the combination of group-stage competition mechanism and exploration-exploitation balance mechanism, and its applicability and effectiveness are demonstrated through experiments.
KNOWLEDGE-BASED SYSTEMS
(2022)
Article
Computer Science, Artificial Intelligence
Mohammad H. Nadimi-Shahraki, Shokooh Taghian, Seyedali Mirjalili
Summary: An Improved Grey Wolf Optimizer (I-GWO) is proposed in this article to tackle global optimization and engineering design problems by introducing a dimension learning-based hunting (DLH) search strategy. The IGWO algorithm addresses the lack of population diversity, imbalance between exploitation and exploration, and premature convergence seen in the GWO algorithm. Experimental results show that I-GWO is competitive against six other state-of-the-art metaheuristics, demonstrating its efficiency and applicability in engineering design problems.
EXPERT SYSTEMS WITH APPLICATIONS
(2021)
Article
Computer Science, Artificial Intelligence
Benyamin Abdollahzadeh, Farhad Soleimanian Gharehchopogh, Seyedali Mirjalili
Summary: Metaheuristics play a crucial role in solving optimization problems, often inspired by the collective intelligence of natural organisms. This paper introduces a new metaheuristic algorithm, GTO, inspired by gorilla troops' social intelligence in nature. Results show that the GTO outperforms existing metaheuristics on most benchmark functions and engineering problems, especially in high-dimensional scenarios.
INTERNATIONAL JOURNAL OF INTELLIGENT SYSTEMS
(2021)
Article
Computer Science, Interdisciplinary Applications
Amir Seyyedabbasi, Farzad Kiani
Summary: This paper introduces two novel meta-heuristic algorithms inspired by the Grey Wolf Optimizer (GWO) algorithm, which are the expanded Grey Wolf Optimizer and the incremental Grey Wolf Optimizer. Both algorithms focus on exploration and exploitation, and their simulated results over 33 benchmark functions show promising solutions for various problems.
ENGINEERING WITH COMPUTERS
(2021)
Article
Thermodynamics
Mehdi Ghalambaz, Reza Jalilzadeh Yengejeh, Amir Hossein Davami
Summary: In this research, the Grey Wolf Optimizer (GWO) was utilized to minimize the energy consumption of an office building in Seattle, with optimal performance achieved using 40 wolves. Compared to other optimization algorithms, GWO efficiently led to excellent optimal solutions.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Computer Science, Information Systems
Wu Lei, Wu Jiawei, Meng Zezhou
Summary: Since its introduction, the Grey Wolf Optimizer (GWO) has been widely used due to its simplicity and applicability. However, the problem of early convergence and inefficient results in GWO variants still persists. To address this, the GWO is integrated with Levy Flight in LFGWO. Experimental results show that LFGWO outperforms other algorithms in terms of average and standard deviation values, demonstrating its performance, stability, and robustness. Additionally, LFGWO is superior in solving real-world problems and IIR challenging model identification.
Article
Engineering, Marine
Fang Wang, Liang Zhao
Summary: This paper discusses the coordinated path planning mission accomplished by collaborative efforts among multiple Autonomous Underwater Vehicles (AUVs). By formulating a sophisticated coordinated path planning model and addressing the optimization problem through the incorporation of a restricted initialization scheme and a multi-objective clustering strategy, the Parallel Grey Wolf Optimizer (P-GWO) is developed, which exhibits strong global searching abilities and a rapid convergence rate, providing an effective solution for underwater missions.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Computer Science, Interdisciplinary Applications
Prakhar Kumar Kharwar, Rajesh Kumar Verma
Summary: The nanosize of reinforcement in epoxy composites creates a better synergistic effect, enhancing the properties of multifunctional components. This article explores the machining aspects of MWCNT composites using Grey relation analysis and Grey wolf optimization, resulting in optimal machining parameters.
ENGINEERING WITH COMPUTERS
(2022)
Article
Engineering, Multidisciplinary
Mohammad H. H. Nadimi-Shahraki, Ebrahim Moeini, Shokooh Taghian, Seyedali Mirjalili
Summary: This paper presents a new algorithm called DI-GWOCD, which is an improved discrete version of the Grey Wolf Optimizer algorithm, for effectively detecting communities in different networks. The algorithm first uses a local search strategy to improve the search ability of the algorithm and then introduces a novel Binary Distance Vector to calculate the distances between the wolves. Experimental results show that DI-GWOCD can detect communities more effectively than other algorithms.
JOURNAL OF BIONIC ENGINEERING
(2023)
Article
Computer Science, Artificial Intelligence
Jia Cai, Tianhua Luo, Guanglong Xu, Yi Tang
Summary: Biologically inspired computing is a method that uses elegantly modeled techniques motivated by the behaviors of creatures in nature to solve real-world problems. This paper investigates an improved Harris hawks optimizer (HHO) by introducing the grey wolf optimizer (GWO) and improving the balance between exploration and exploitation. The proposed approach combines different cognitive hunting behaviors of Harris' hawks and grey wolf packs and selects the best solutions through iterations. Experimental results demonstrate the effectiveness and efficiency of the proposed method.
COGNITIVE COMPUTATION
(2022)
Article
Computer Science, Artificial Intelligence
Erik Cuevas, Hector Escobar, Ram Sarkar, Heba F. Eid
Summary: This paper proposes a new population initialization method for metaheuristic algorithms, where the initial set of candidate solutions is obtained through the sampling of the objective function. The method aims to find initial solutions that are close to the prominent values of the objective function, and these initial points represent promising regions of the search space. The proposed approach shows faster convergence and improved quality of solutions compared to other similar approaches.
APPLIED INTELLIGENCE
(2023)
Article
Computer Science, Artificial Intelligence
Eduardo H. Haro, Omar Avalos, Octavio Camarena, Erik Cuevas
Summary: The increasing demand for products and services due to globalization has highlighted the importance of improving manufacturing processes. Flexible process planning (FPP) has been treated as an optimization problem in the context of distributed manufacturing. In this study, a genetic algorithm is employed for an accurate FPP process, achieving competitive results.
NEURAL COMPUTING & APPLICATIONS
(2023)
Article
Computer Science, Information Systems
Alberto Luque-Chang, Erik Cuevas, Angel Chavarin, Marco Perez-Cisneros
Summary: This paper proposes a method for improving image contrast by treating pixels as autonomous agents and adjusting their intensity values based on differences in intensity among neighboring pixels. Experimental results demonstrate that the proposed approach effectively enhances image contrast with a lower computational execution time.
Article
Computer Science, Artificial Intelligence
Carolina Del-Valle-Soto, Alma Rodriguez, Cesar Rodolfo Ascencio-Pina
Summary: This paper reviews the most recent clustering routing protocols for Wireless Sensor Networks (WSNs) based on metaheuristic techniques, aiming to provide clear and meaningful information about state-of-the-art approaches. Due to a lack of comprehensive survey studies in this field, a more in-depth study is presented, focusing on different metaheuristic-based strategies for selecting optimal cluster heads. The primary objective is to review approaches that have developed novel cluster-based routing protocols primarily for reducing energy consumption in WSNs. The survey examines each protocol considering its methodology, properties, and provides a comparative analysis of the reviewed approaches based on network structure, characteristics, metaheuristic algorithm used, search strategy, metrics, and results reported.
ARTIFICIAL INTELLIGENCE REVIEW
(2023)
Article
Computer Science, Interdisciplinary Applications
Gemma Corona, Oscar Maciel-Castillo, Juan Morales-Castaneda, Adrian Gonzalez, Erik Cuevas
Summary: Template matching is a computer vision technique used to identify a predefined sub image (template) and its corresponding area in a large image. Existing methods fail to detect rotated templates. This paper presents a new approach for template matching using a metaheuristic algorithm and the structural similarity index, which solves the problem of detecting rotated templates.
MATHEMATICS AND COMPUTERS IN SIMULATION
(2023)
Article
Mathematics, Applied
Avelina Alejo-Reyes, Abraham Mendoza, Erik Cuevas, Miguel Alcaraz-Rivera
Summary: This article focuses on solving the order quantity allocation problem for retailers, considering quality constraints, nonlinear quantity discounts, and price-dependent demand. By formulating it as a nonlinear maximization problem, the article proposes a new mathematical model that can solve the problem of quality constraint and demand simultaneously. The proposed model considers demand as output and includes price-dependent demand, showing better results than previous solutions regarding profit maximization.
Article
Mathematics, Applied
Paulina Gonzalez-Ayala, Avelina Alejo-Reyes, Erik Cuevas, Abraham Mendoza
Summary: Economic Order Quantity (EOQ) is an important optimization problem for inventory management. This paper proposes a modified multiple-agent adaptive Simulated Annealing (SA) algorithm, which can efficiently solve complex problems with non-linear, non-convex, and non-differentiable objective functions.
Article
Engineering, Multidisciplinary
Erik Cuevas, Alma Rodriguez, Marco Perez, Jesus Murillo-Olmos, Bernardo Morales-Castaneda, Avelina Alejo-Reyes, Ram Sarkar
Summary: A new contagious disease or unidentified COVID-19 variants could lead to a new global economic collapse. To mitigate the economic effects, companies and organizations must adopt reopening policies based on mathematical models that simulate infection chains. Agent-based schemes provide accurate simulation results by modeling person-to-person interactions, and the integration of optimization and simulation can automatically find the realistic scenario with the lowest risk of infection.
APPLIED MATHEMATICAL MODELLING
(2023)
Article
Computer Science, Information Systems
Angel Chavarin, Erik Cuevas, Omar Avalos, Jorge Galvez, Marco Perez-Cisneros
Summary: Homomorphic filtering (HF) is a method that decomposes an image into illumination and reflectance components to improve contrast while preserving edges and sharp features. Finding the optimal filter parameters is challenging and often involves trial-and-error, but this paper proposes using cluster chaotic optimization (CCO) to efficiently search the parameter space. Experimental results show that the proposed method produces competitive results in terms of quality, stability, and accuracy compared to other methods on different datasets.
Article
Computer Science, Information Systems
Hector Escobar, Erik Cuevas, Miguel Islas Toski, Francisco Javier Ceron Ramirez, Marco Perez-Cisneros
Summary: Statistical methods have limitations when modeling complex crime patterns, but agent-based models offer a promising alternative by considering each agent's neighborhood and employing simple rules. This paper proposes a new agent-based model to simulate crime patterns in urban areas, involving offenders, citizens, and defenders. The simulation results provide valuable information for creating or improving public security strategies, such as escape trajectories and robbery frequencies. The model's effectiveness is validated through experiments in Guadalajara, Mexico, demonstrating its ability to accurately predict criminal behavior and inform security measures to reduce crime.
Article
Computer Science, Information Systems
Ernesto Ayala, Erik Cuevas, Daniel Zaldivar, Marco Perez
Summary: Image segmentation is the process of dividing an image into different regions or objects that represent coherent and meaningful parts of the image. Traditional methods often struggle to handle regions with noise and intensity inconsistencies, resulting in poor quality performance. This paper proposes an agent-based model approach that iteratively modifies the intensity values of each pixel based on the states of neighboring pixels, aiming to achieve homogeneous grayscale levels and reduce the presence of noisy pixels and undesirable artifacts. Experimental results demonstrate that the proposed approach produces better-segmented images in terms of quality and robustness, especially when combined with the Otsu's method.
Article
Computer Science, Information Systems
Jorge Galvez, Erik Cuevas, David Eliel Bocanegra Michel, Alma Rodriguez, Marco Antonio Perez-Cisneros
Summary: Automatic circle detection is a crucial element in designing complex industrial image tasks. There are two perspectives on multi-circle detection: deterministic and stochastic. Deterministic approaches combine geometric and histogram information, but cannot handle noise, shape variance, or occlusion. Stochastic methods, such as metaheuristic algorithms, have been proposed as alternatives but can only detect one circle per execution. This paper reformulates the multi-circle detection problem as a multimodal optimization problem and utilizes the Multimodal Flower Pollination Algorithm to detect all circular instances in the image, significantly improving detection.
Article
Computer Science, Information Systems
Karla Avila, Erik Cuevas, Marco Perez, Ram Sarkar
Summary: This paper presents a metaphor-free metaheuristic algorithm based on complex networks and Bezier curves. The algorithm represents candidate solutions as nodes in a graph and continuously modifies the graph based on the evaluation of new candidate solutions, allowing for exploration and exploitation of the search space. The experimental results demonstrate the effectiveness of the algorithm compared to other well-known metaheuristic algorithms on various benchmark functions.
Article
Engineering, Multidisciplinary
A. A. Aganin, A. I. Davletshin
Summary: A mathematical model of interaction of weakly non-spherical gas bubbles in liquid is proposed in this paper. The model equations are more accurate and compact compared to existing analogs. Five problems are considered for validation, and the results show good agreement with experimental data and numerical solutions. The model is also used to analyze the behavior of bubbles in different clusters, providing meaningful insights.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Hao Wu, Jie Sun, Wen Peng, Lei Jin, Dianhua Zhang
Summary: This study establishes an analytical model for the coupling of temperature, deformation, and residual stress to explore the mechanism of residual stress formation in hot-rolled strip and how to control it. The accuracy of the model is verified by comparing it with a finite element model, and a method to calculate the critical exit crown ratio to maintain strip flatness is proposed.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Shengwen Tu, Naoki Morita, Tsutomu Fukui, Kazuki Shibanuma
Summary: This study aimed to extend the finite element method to cope with elastic-plastic problems by introducing the s-version FEM. The s-version FEM, which overlays a set of local mesh with fine element size on the conventional FE mesh, simplifies domain discretisation and provides accurate numerical predictions. Previous applications of the s-version FEM were limited to elastic problems, lacking instructions for stress update in plasticity. This study presents detailed instructions and formulations for addressing plasticity problems with the s-version FEM and analyzes a stress concentration problem with linear/nonlinear material properties.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Bo Fan, Zhongmin Wang
Summary: A 3D rotating hyperelastic composite REF model was proposed to analyze the influence of tread structure and rotating angular speed on the vibration characteristics of radial tire. Nonlinear dynamic differential equations and modal equations were established to study the effects of internal pressure, tread pressure sharing ratio, belt structure, and rotating angular speed on the vibration characteristics.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
X. W. Chen, Z. Q. Yue, Wendal Victor Yue
Summary: This paper examines the axisymmetric problem of a flat mixed-mode annular crack near and parallel to an arbitrarily graded interface in functionally graded materials (FGMs). The crack is modeled as plane circular dislocation loop and an efficient solution for dislocation in FGMs is used to calculate the stress field at the crack plane. The analytical solutions of the stress intensity factors are obtained and numerical study is conducted to investigate the fracture mechanics of annular crack in FGMs.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Xumin Guo, Jianfei Gu, Hui Li, Kaihua Sun, Xin Wang, Bingjie Zhang, Rangwei Zhang, Dongwu Gao, Junzhe Lin, Bo Wang, Zhong Luo, Wei Sun, Hui Ma
Summary: In this study, a novel approach combining the transfer matrix method and lumped parameter method is proposed to analyze the vibration response of aero-engine pipelines under base harmonic and random excitations. The characteristics of the pipelines are investigated through simulation and experiments, validating the effectiveness of the proposed method.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Xiangyu Sha, Aizhong Lu, Ning Zhang
Summary: This paper investigates the stress and displacement of a layered soil with a fractional-order viscoelastic model under time-varying loads. The correctness of the solutions is validated using numerical methods and comparison with existing literature. The research findings are of significant importance for exploring soil behavior and its engineering applications under time-varying loads.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Thuy Dong Dang, Thi Kieu My Do, Minh Duc Vu, Ngoc Ly Le, Tho Hung Vu, Hoai Nam Vu
Summary: This paper investigates the nonlinear torsional buckling of corrugated core sandwich toroidal shell segments with functionally graded graphene-reinforced composite (FG-GRC) laminated coatings in temperature change using the Ritz energy method. The results show the significant beneficial effects of FG-GRC laminated coatings and corrugated core on the nonlinear buckling responses of structures.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Zhihao Zhai, Chengbiao Cai, Qinglai Zhang, Shengyang Zhu
Summary: This paper investigates the effect of localized cracks induced by environmental factors on the dynamic performance and service life of ballastless track in high-speed railways. A mathematical approach for forced vibrations of Mindlin plates with a side crack is derived and implemented into a train-track coupled dynamic system. The accuracy of this approach is verified by comparing with simulation and experimental results, and the dynamic behavior of the side crack under different conditions is analyzed.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
James Vidler, Andrei Kotousov, Ching-Tai Ng
Summary: The far-field methodology, developed by J.C. Maxwell, is utilized to estimate the effective third order elastic constants of composite media containing random distribution of spherical particles. The results agree with previous studies and can be applied to homogenization problems in other fields.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Kim Q. Tran, Tien-Dat Hoang, Jaehong Lee, H. Nguyen-Xuan
Summary: This study presents novel frameworks for graphene platelets reinforced functionally graded triply periodic minimal surface (GPLR-FG-TPMS) plates and investigates their performance through static and free vibration analyses. The results show that the mass density framework has potential for comparing different porous cores and provides a low weight and high stiffness-to-weight ratio. Primitive plates exhibit superior performance among thick plates.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Bence Hauck, Andras Szekrenyes
Summary: This study explores several methods for computing the J-integral in laminated composite plate structures with delamination. It introduces two special types of plate finite elements and a numerical algorithm. The study presents compact formulations for calculating the J-integral and applies matrix multiplication to take advantage of plate transition elements. The models and algorithms are applied to case studies and compared with analytical and previously used finite element solutions.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Wu Ce Xing, Jiaxing Wang, Yan Qing Wang
Summary: This paper proposes an effective mathematical model for bolted flange joints to study their vibration characteristics. By modeling the flange and bolted joints, governing equations are derived. Experimental studies confirm that the model can accurately predict the vibration characteristics of multiple-plate structures.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Pingchao Yu, Li Hou, Ke Jiang, Zihan Jiang, Xuanjun Tao
Summary: This paper investigates the imbalance problem in rotating machinery and finds that mass imbalance can induce lateral-torsional coupling vibration. By developing a model and conducting detailed analysis, it is discovered that mass imbalance leads to nonlinear time-varying characteristics and there is no steady-state torsional vibration in small unbalanced rotors. Under largely unbalanced conditions, both resonant and unstable behavior can be observed, and increasing lateral damping can suppress instability and reduce lateral amplitude in the resonance region.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Yong Cao, Ziwen Guo, Yilin Qu
Summary: This paper investigates the mechanically induced electric potential and charge redistribution in a piezoelectric semiconductor cylindrical shell. The results show that doping levels can affect the electric potentials and mechanical displacements, and alter the peak position of the zeroth-order electric potential. The doping level also has an inhibiting effect on the first natural frequency. These findings are crucial for optimizing the design and performance of cylindrical shell-shaped sensors and energy harvesters.
APPLIED MATHEMATICAL MODELLING
(2024)