反向传播(back－propagation,BP)算法是一种计算单个权值变化引起网络性能变化值的较为简单的方法。由于BP算法过程包含从输出节点开始，反向地向第一隐含层(即最接近输入层的隐含层)传播由总误差引起的权值修正，所以称为\"反向传播\"。-BP (back-propagation BP) algorithm is a calculation of the weights of individual changes in network performance changes in the value of a relatively simple approach. Due process includes BP algorithm from the output nodes, the reverse to the first hidden layer (input layer that is closest to the hidden layer) transmission errors caused by the total value of the right to amend, known as the "back-propagation."