混合策略改进正弦余弦算法

为提高正弦余弦算法在求解函数优化问题的性能，提出混合策略改进正弦余弦算法。首先，利用正切函数作为调节因子代替原本线性变化的参数，用于平衡算法的全局探索和局部开发；然后，引入权重系数，用于控制位置更新处个体上一代位置的影响力，有效提高算法开发能力和寻优速度；最后，构建逐维交叉学习策略，克服最优解无更新的缺点，对最优个体进行扰动更新，跳出局部最优，避免早熟收敛。在不同维数的八个基准函数上进行仿真实验。实验表明，该算法相对于其他群智能优化算法具有更高的寻优精度和收敛速度，相比于最新的正弦余弦改进算法，也表现出更好的收敛性能和稳定性。

Mixed strategy to improve sine cosine algorithm

In order to improve the performance of the sine cosine algorithm in solving the function optimization problem, this paper proposed an improved sine cosine algorithm for mixed strategy(MI-SCA). Firstly, in order to balance the global exploration and local exploitation of the algorithm, it used the tangent function as the adjustment factor instead of the original linear variation parameter. Then, it introduced the weight coefficient to control the influence of the previous generation position of the location update, and improved the algorithm exploitation and optimization speed effectively. Finally, it constructed a cross-dimensional cross-learning strategy to overcome the shortcomings of the optimal solution without updating, perturb the optimal individual, avoid falling into the local optimum, and avoid premature convergence. The simulation experiments were carried out on eight benchmark functions with different dimensions. The experimental results show that the proposed algorithm has higher optimization precision and convergence speed than the comparison algorithm, and shows better convergence performance and stability.