Hopfield网络是一种典型的单层反馈网络，这种网络可以分为离散型和连续型两种，Hopfield网络是一个动力学系统，在确定连接权重后，若输入某个向量之后，网络将不断演化，一般情况下系统将趋向某一个定态，称为状态空间的不动点吸引子。-Hopfield network is a typical single-layer feedback network, Such networks can be divided into discrete and continuous two, the Hopfield network is a dynamic system, In determining the weights link, and if the importation of a certain vector, the network will continue to evolve Under normal circumstances a system will tend to a steady state, as the state space of fixed point attractor.