About SE Reduction ratio?

[H-YunHui]

In the original Squeeze-and-Excitation Networks, the author found through experiments that when reduction = 16, precision and complexity are well balanced, and in your module, reduction is set to the current number of bneck output channels , what is the reason for this setting? Did it come from the experiment?

[wangh09]

In chapter5.3, the original mobilenetv3 paper, it says that the reduction ratio is set to 1/4 (namely 4), as well as in the current implementation