how to change the loss function of this model?

[gjt9274]

there is a sample imbalance problem in my data(with positive and negative ratio is 1:10)，so I wanna to change the loss function to focal loss. anybody who knows where to change the code and how or another solution to solve my question? Thanks a lot

[songxiaoju]

I want to do this, too.

[gjt9274]

I want to do this, too.

so, did you solve it?

[songxiaoju]

I want to do this, too.

so, did you solve it?

sorry,I can't deal with it.