题目内容

以下关于极限学习机(ELM)说法错误的是( )。

A. ELM有多个隐藏层
B. ELM学习速度非常快,因为需要更新的变量数目很少
C. ELM隐藏层的权值是初始时随机赋值的,在迭代中不对其进行更新
D. ELM也分输入层、隐藏层和输出层三层

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