iris数据分类，bp神经网络实现，适当调整训练次数和训练精度，分类准确率可达99 以上-iris data classification, bp neural network, training times and training appropriate adjustments to the accuracy, classification accuracy rate of 99 or more

应用bp网络对iris数据进行分类，得到了比较准确的结果-Application bp iris data classification network, get more accurate results