Question about tf.log usage

[machanic]

I am re-implementing AutoZOOM attack into pytorch version.
In the following code:
you use tf.log on the output logits of model (without softmax layer).
https://github.com/IBM/Autozoom-Attack/blob/master/blackbox_attack.py#L152
https://github.com/IBM/Autozoom-Attack/blob/master/blackbox_attack.py#L154

However, in pytorch, the model's output logits may be negative float value. Thus, Apply F.log on that logits would produce nan because negative value is not valid value of log.

What is your model's last fc layer's output range? Your model's logits is after softmax layer thus ranges from 0 to 1.0?

Thank you.

[chunchentu]

Please take a look at the setup_xxx file. I believe they are pretty clear