中文说明：
鸽群优化(pigeon-inspired optimization,PIO)算法是近年来才出现的一种群体智能优化算法,它是受自然界中鸽群自主归巢行为的启发而提出的。
English Description：
Pigeon inspired optimization (PIO) algorithm is a swarm intelligence optimization algorithm which appears in recent years. It is inspired by the homing behavior of pigeons in nature.