针对鸟群优化算法迭代初期种群多样性不足、迭代后期收敛速度慢、易陷入局部最优解等问题,提出一种融合柯西变异的鸟群与算术混合优化算法(hybrid algorithm of bird swarm algorithm and arithmetic optimization algorithm based on C...针对鸟群优化算法迭代初期种群多样性不足、迭代后期收敛速度慢、易陷入局部最优解等问题,提出一种融合柯西变异的鸟群与算术混合优化算法(hybrid algorithm of bird swarm algorithm and arithmetic optimization algorithm based on Cauchy mutation,HBSAAOA)。利用算术优化算法中乘除算子的高分布性对BSA中生产者的位置进行更新,以提高种群多样性,增强全局搜索能力。引入随机搜索策略和柯西变异策略来生成候选解,对后期局部开发阶段进行扰动,以增强算法跳出局部最优解的能力并提高收敛速度。利用贪婪策略对最优个体进行选择并替代较差的个体,从而提高解的质量。通过对23个经典测试函数以及部分CEC2014基准函数进行仿真实验,并将HBSAAOA应用到两个工程应用问题上,结果表明改进策略有效,改进算法的收敛速度更快、寻优精度更高,并且鲁棒性更好。展开更多
To make up the poor quality defects of traditional control methods and meet the growing requirements of accuracy for strip crown,an optimized model based on support vector machine(SVM)is put forward firstly to enhance...To make up the poor quality defects of traditional control methods and meet the growing requirements of accuracy for strip crown,an optimized model based on support vector machine(SVM)is put forward firstly to enhance the quality of product in hot strip rolling.Meanwhile,for enriching data information and ensuring data quality,experimental data were collected from a hot-rolled plant to set up prediction models,as well as the prediction performance of models was evaluated by calculating multiple indicators.Furthermore,the traditional SVM model and the combined prediction models with particle swarm optimization(PSO)algorithm and the principal component analysis combined with cuckoo search(PCA-CS)optimization strategies are presented to make a comparison.Besides,the prediction performance comparisons of the three models are discussed.Finally,the experimental results revealed that the PCA-CS-SVM model has the highest prediction accuracy and the fastest convergence speed.Furthermore,the root mean squared error(RMSE)of PCA-CS-SVM model is 2.04μm,and 98.15%of prediction data have an absolute error of less than 4.5μm.Especially,the results also proved that PCA-CS-SVM model not only satisfies precision requirement but also has certain guiding significance for the actual production of hot strip rolling.展开更多
文摘针对鸟群优化算法迭代初期种群多样性不足、迭代后期收敛速度慢、易陷入局部最优解等问题,提出一种融合柯西变异的鸟群与算术混合优化算法(hybrid algorithm of bird swarm algorithm and arithmetic optimization algorithm based on Cauchy mutation,HBSAAOA)。利用算术优化算法中乘除算子的高分布性对BSA中生产者的位置进行更新,以提高种群多样性,增强全局搜索能力。引入随机搜索策略和柯西变异策略来生成候选解,对后期局部开发阶段进行扰动,以增强算法跳出局部最优解的能力并提高收敛速度。利用贪婪策略对最优个体进行选择并替代较差的个体,从而提高解的质量。通过对23个经典测试函数以及部分CEC2014基准函数进行仿真实验,并将HBSAAOA应用到两个工程应用问题上,结果表明改进策略有效,改进算法的收敛速度更快、寻优精度更高,并且鲁棒性更好。
基金Project(52005358)supported by the National Natural Science Foundation of ChinaProject(2018YFB1307902)supported by the National Key R&D Program of China+1 种基金Project(201901D111243)supported by the Natural Science Foundation of Shanxi Province,ChinaProject(2019-KF-25-05)supported by the Natural Science Foundation of Liaoning Province,China。
文摘To make up the poor quality defects of traditional control methods and meet the growing requirements of accuracy for strip crown,an optimized model based on support vector machine(SVM)is put forward firstly to enhance the quality of product in hot strip rolling.Meanwhile,for enriching data information and ensuring data quality,experimental data were collected from a hot-rolled plant to set up prediction models,as well as the prediction performance of models was evaluated by calculating multiple indicators.Furthermore,the traditional SVM model and the combined prediction models with particle swarm optimization(PSO)algorithm and the principal component analysis combined with cuckoo search(PCA-CS)optimization strategies are presented to make a comparison.Besides,the prediction performance comparisons of the three models are discussed.Finally,the experimental results revealed that the PCA-CS-SVM model has the highest prediction accuracy and the fastest convergence speed.Furthermore,the root mean squared error(RMSE)of PCA-CS-SVM model is 2.04μm,and 98.15%of prediction data have an absolute error of less than 4.5μm.Especially,the results also proved that PCA-CS-SVM model not only satisfies precision requirement but also has certain guiding significance for the actual production of hot strip rolling.
