An Adaptive Fruit Fly Optimization Algorithm for Optimization Problems

In this paper, we present a new fruit fly optimization algorithm with the adaptive step for solving unconstrained optimization problems, which is able to avoid the slow convergence and the tendency to fall into local optimum of the standard fruit fly optimization algorithm. By using the information of the iteration number and the maximum iteration number, the proposed algorithm uses the floor function to ensure that the fruit fly swarms adopt the large step search during the olfactory search stage which improves the search speed;in the visual search stage, the small step is used to effectively avoid local optimum. Finally, using commonly used benchmark testing functions, the proposed algorithm is compared with the standard fruit fly optimization algorithm with some fixed steps. The simulation experiment results show that the proposed algorithm can quickly approach the optimal solution in the olfactory search stage and accurately search in the visual search stage, demonstrating more effective performance.

基于ACFOA优化RBF的短期风电功率预测

为了提高短期风电输出功率预测的准确度,在分析研究基本预测方法的基础上,提出采用一种自适应混沌果蝇算法(ACFOA)优化RBF神经网络的预测方法。该方法中引入自适应混沌对果蝇算法的进化机制进行优化,并利用ACFOA算法改善RBF神经网络结构参数以提高网络的泛化能力,同时对某风电场的历史数据进行验证分析。仿真结果表明,相比于PSO-RBF预测方法,采用提出的预测模型能有效减少较大误差出现的频率,大幅度提高风电输出功率预测的准确度。

自适应混沌果蝇优化算法

针对基本果蝇优化算法(FOA)寻优精度不高和易陷入局部最优的缺点,融入混沌算法对果蝇优化算法的进化机制进行优化,提出自适应混沌果蝇优化算法(ACFOA)。在算法处于收敛状态时,应用混沌算法进行全局寻优,从而跳出局部极值而继续优化。对几种经典测试函数的仿真结果表明,ACFOA具有更好的全局搜索能力,在收敛速度、收敛可靠性及收敛精度上均比基本FOA有较大的提高。