BP神经网络分类器,使用iris数据集,data文件夹里的iris.txt是原始数据,train.txt和test.txt是从原始数据中随机划分的训练集和测试集,用tan-sigmoid做激活函数分类准确率接近100%!原理分析详见http://blog.csdn.net/zhongkejingwang/article/details/44514073 ##BP神经网络 ##抽象出来的BP网络 ###节点内部示意图:
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