中文说明：粒子群优化算法是一种进化优化技术，源于对鸟群扑食的行为，是一种基于迭代的优化工具。这种算法具有很好的收敛性，作为一种启发式智能算法，在优化中得到了广泛的使用。此文件提供了基于灰色理论的粒子群算法。
English Description：
Particle swarm optimization is an evolutionary optimization technique, originated from birds of prey behavior, is based on an iterative optimization tools. This algorithm has good convergence, as an intelligent heuristic algorithm optimization has been widely used. This document provides a PSO algorithm based on gray theory.