Comments (3)
Thanks for your interest @houssem-tum! The ratio between the losses will have to be tuned based on your particular dataset. We found that they have significantly different magnitudes. I recommend computing both loss contributions on your own data and seeing what ratio is most appropriate for you.
from 2017_iv_deep_radar.
Thank you for your answer @tawheeler.
I have an other question: How could you evaluate the performance of your network during and at the end of the training? The generator at the end has to be more powerful than the discriminator, right?
from 2017_iv_deep_radar.
That is a deep question that I am sure is still being actively researched. You don't want either the generator or the discriminator to get too good - if the generator is always fooling the discriminator, then your output is probably overfit on the training data - if the generator is never fooling the discriminator, then your output is clearly separable.
The simplest way to juggle this is to alternate between which model is trained. In our training script we simply alternate between 10 steps on each:
for step in range(1,args.nsteps):
step = step + 1
loss_D = train_discriminator(10)
loss_G = train_generator(10)
I am sure there are more clever ways to go about it, but this worked reasonably well for the purpose of the research paper. Googling "how to train GANs" can probably get you a bunch of additional info.
from 2017_iv_deep_radar.
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