Input data to the pooling operator.
Ignore kernel size, do global pooling based on current input feature map.
pooling kernel size: (y, x) or (d, y, x)
pad for pooling: (y, x) or (d, y, x)
Pooling type to be applied.
Pooling convention to be applied.
stride: for pooling (y, x) or (d, y, x)
This Param Object is specifically used for Pooling_v1