基于Log-Linear模型的Gauss-Cauchy自适应人工鱼群算法

针对基本人工鱼群算法在寻优过程中易在非全局极值点附近大量聚集,导致寻优精度降低、收敛速度过慢、人工鱼群多样性降低等问题,提出了一种基于Log-Linear模型的Gauss-Cauchy自适应人工鱼群算法。首先,在基本人工鱼群算法中引入Log-Linear模型来优化人工鱼的三个行为;其次,在算法中引入自适应调整人工鱼视野和步长的策略,随着算法的进行提高了人工鱼的搜索范围和寻优精度;再次,利用Gauss-Cauchy变异来提高人工鱼的多样性。仿真实验结果表明,该算法与其他改进算法相比,有效地提高了收敛速度和寻优精度,保持了人工鱼群的多样性。

基于Log-Linear模型的Gauss-Cauchy自适应细菌觅食算法

针对基本细菌觅食算法在寻优过程中易在非全局价值点附近大量聚集,导致寻优精度降低、收敛速度过慢、细菌种群多样性降低等一系列问题,提出了一种基于Log-Linear模型的Gauss-Cauchy自适应细菌觅食算法。首先,将Log-Linear模型引入基本细菌觅食算法中用来优化细菌的三个行为;其次,在算法中引入自适应调整细菌的视野和步长的策略,细菌的搜索范围和寻优精度随也可随着算法的进行得到提高;再次,利用Gauss-Cauchy变异来提高细菌种群的多样性。仿真实验结果表明,该改进算法与其他优化算法进行比较,算法的收敛速度提高30%和寻优精度提高78%,并保持了细菌的多样性。

Multi-Strategy Boosted Spider Monkey Optimization Algorithm for Feature Selection

To solve the problem of slow convergence and easy to get into the local optimum of the spider monkey optimization algorithm,this paper presents a new algorithm based on multi-strategy(ISMO).First,the initial population is generated by a refracted opposition-based learning strategy to enhance diversity and ergodicity.Second,this paper introduces a non-linear adaptive dynamic weight factor to improve convergence efficiency.Then,using the crisscross strategy,using the horizontal crossover to enhance the global search and vertical crossover to keep the diversity of the population to avoid being trapped in the local optimum.At last,we adopt a Gauss-Cauchy mutation strategy to improve the stability of the algorithm by mutation of the optimal individuals.Therefore,the application of ISMO is validated by ten benchmark functions and feature selection.It is proved that the proposed method can resolve the problem of feature selection.

窄带非高斯建模及其仿真验证

本文介绍了Middleton提出的Class A窄带非高斯模型，并对其进行了仿真验证。结果表明：对于一个已知分布的非高斯序列，Class A模型能对它的概率密度作出相当好的逼近，参数估计法能准确估记出模型的参数值。