I have a tensor of (? , 15 ,512) now i want to multiply it with (512 , 196) why is the result shape is (? ,15 ,? , 196) it should be (? , 15 ,196 )I have a tensor of (? , 15 ,512) now i want to
阅读背景：
keras中的乘法形状（？，15，？，196）
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