这是一个基于BP 神经网络的猪肉新鲜度检测方法，电子鼻-This is a BP neural network based detection of pork freshness, the electronic nose

介绍了粒子群在神经网络优化的应用,对研究电子鼻有较大帮助-Describes the particle swarm optimization neural network applications, the study of electronic nose of great help