Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2022-06-06 Cooperative journals: 《计算机应用研究》
Abstract： The Aquila optimizer (AO) , although capable of robust global exploration, had problems with inadequate local development. In the study, a differential evolution mutation and tangent flight Aquila optimizer (DEtanAO) was proposed. Firstly, the mutation operation in the differential evolution algorithm can make the algorithm have strong development ability and make up for the shortcomings of the AO algorithm. Then, the tangent flight strategy in the tangent search algorithm has a strong ability to explore the search space and can make the algorithm jump out of the local optimal solution, which is used to replace the Levy flight in the AO algorithm. The combination of these two strategies effectively balanced the exploration and exploitation stage of the DEtanAO algorithm. Finally, in order to verify the optimization performance of the DEtanAO algorithm, the optimization ability of the improved algorithm was tested in 12 standard benchmark functions, high-dimensional functions, Wilcoxon rank-sum test, and engineering optimization problems. The results showed that the optimization ability and convergence speed of the DEtanAO algorithm was better, compared with other newly proposed intelligent algorithms.
Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2022-05-10 Cooperative journals: 《计算机应用研究》
Abstract： Aiming at the search stagnation and poor stability of the Slime Mould algorithm, propose an unscented sigma point guided quasi-opposite Slime Mould Algorithm. Firstly, use quasi-opposite learning and quasi-reflected learning to exploration and exploitation behaviors according to the original Slime Mould Algorithm to generate a comprehensive opposite population that includes both quasi-opposite learning and quasi-reflected learning, expand the search space. Secondly, according to the diversity of the population, decide whether to use the opposite population to regenerate a new population for subsequent calculations, avoid the continuous opposite process destroying the search characteristics of the population itself, and improve the search accuracy. Finally, use unscented transformation Sigma point to improve the basic movement mode of Slime Mould Algorithm, make the unscented sigma point guide the search, and accelerate the convergence speed. The experimental part uses the CEC2017 benchmark test functions, uses traditional statistical index and MAE ranking, Wilcoxon rank-sum test to verify the effectiveness of the algorithm, and use it to solve the car side impact design problem, compares and tests with the novel swarm intelligence algorithms, improved algorithms and incomplete algorithm. The experimental results show that the strategies is effective and combinations of strategies complement each other, and the improved algorithm's solution accuracy and robustness are more competitive.
Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2018-08-13 Cooperative journals: 《计算机应用研究》
Abstract： In order to overcome the problem that most of the methods for granularity weights has strong subjectivity, this paper proposed a weight determination method based on the granularity information quantity. Firstly, the method introduced the information quantity into the lower approximate distribution of the rough set. It defined the information quantity of the granularity set in the approximate distribution under the rough set. Secondly, it defined the importance degree of the granularity based on the information quantity. It used the importance degree of the granularity as the heuristic information. It proposed a synthetic method based on the quantity of information to determine the granularity weight. In this method, introduced a weight coefficient. According to the actual situation, the decision maker chooses the granularity weight determination mode: empirically-oriented and objectively-oriented. Finally, we use an example to verify the effectiveness of the method. We analyze results found that the empirically-oriented determined method strengthens the importance of non-nuclear granularity, and the objectively-oriented determination method strengthens the importance of nuclear granularity.
Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2018-04-24 Cooperative journals: 《计算机应用研究》
Abstract： The chicken swarm algorithm is a novel swarm intelligence algorithm, which imitating the rank system and foraging behavior in the chicken group and showing a certain advantage over the traditional intelligent algorithm. Based on the chicken swarm algorithm, this paper proposed an improved version of the chicken swarm algorithm (ECSO) , which introducing adaptive mutation strategy for balancing algorithm later decreased diversity of the population and improving the speed of convergence process and introducing random walk strategy preference into hen mobile update process to balance "development" and "exploration" stage to enhance the stability of the algorithm, and which introducing "leader" strategy of updating position of chickens to reduce the blindness of the search algorithm. Finally, the effectiveness of the improved algorithm is verified by comparing the test benchmark functions with the basic bat algorithm and the chicken swarm algorithm and other improved chicken swarm algorithm .
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