Quantization. How to decide the best settings for act_max parameters?

[jessonwtp]

Hi All,
I use quant.py to scan the CONV1, CONV2....FC 's input/output.
Can anyone tell me how to choose the best setting and why? Thank you.

My example is -- act_max's one content with differnt settings get different "Train/Validation/Test accuracy rates" as below,

128: 86.17%, 83.73%, 83.54%
64: 95.62%, 93.30%, 93.33%
32: 95.82%, 93.41%, 93.62%
16: 95.79%, 93.41%, 93.89%
8: 95.77%, 93.45%, 93.64%
4: 95.89%, 93.27%, 93.62%
2: 94.01%, 91.32%, 91.35%