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关于expending的操作 #18

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Lzshanshan opened this issue Jun 22, 2020 · 0 comments
Open

关于expending的操作 #18

Lzshanshan opened this issue Jun 22, 2020 · 0 comments

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@Lzshanshan
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您好，想请教一下，网络在对第一层输入操作的时候有一个expending操作，如果输入是一通道，那么会扩展成重复的四个通道，然后使用一个4通道的卷积核依据论文的方法卷积，最终得到四通道。我想问一下，如果我不扩展直接操作，也就是说直接对一通道卷积核做四个方向的扩展，然后分别和输入做卷积，这样同样会得到一个四通道的输出，我认为这两种方式是有区别的，之所以这么思考是因为之后的卷积其实相当于是对卷积核的全部通道先扩展再卷积然后得到输出，这样和分组每组4通道卷积结果上看是一个道理的，但是对于输入来说expending这一步貌似是有区别的？您觉得我想的对吗，望指教！（一名15级北航学生谢过）
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@Lzshanshan