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BP人工神经网络

于 2022-03-02 发布 文件大小:4.66 kB
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神经网络源白于最初开发的人脑模型,神经网络是一个两阶段回归或分类模型。人工神经元(简称神经元)是人工神经网络的基本处理单元。其实是模拟和简化生物神经元. 神经元模型组成部分有: 1.输入 2.权值和闽值 3.求和单元 4.激活函数 (1)线性型激活函数 (2)阔值型激活函数 (3)S型(SIgmoid型)激活函数 5.输出 输入信号如果在经过神经加权求和后,能被激活函数作用,最后有终端输出

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