irakorshunova / bruno Goto Github PK
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Home Page: https://arxiv.org/abs/1802.07535
License: MIT License
a deep recurrent model for exchangeable data
Home Page: https://arxiv.org/abs/1802.07535
License: MIT License
Why is the trainable variable of the variance of the GP/TP kernel (v
in Eq. 9 of the BRUNO paper, diagonal values on the kernel matrix) expressed as the inverse softplus of the square root of the actual variance?
Line 35 in d185d4b
And then actual variance is recovered like this:
Line 37 in d185d4b
Is it simply to ensure v
is non-negative? But then taking the square of self.var_vbl
would suffice for that. Is the softplus some kind of trick for stability or convergence (and if so is it documented anywhere)? Thank you!
P.S. What does the m1
in m1_shapenet
stand for? ๐ค
Hello, thank you for open-sourcing the code! I have a few high-level questions about the models:
In the original RNN version, there is validation done during training:
Lines 201 to 208 in c631d3d
Whereas in the conditional version, eval_loss
is never used:
bruno/config_conditional/train.py
Lines 79 to 84 in c631d3d
BRUNO is clearly maximizing the joint log likelihood:
However, conditional BRUNO does not seem to be maximizing the joint conditional log likelihood... or is it?
Do you think this is this a problem, or not really since in practice it works nonetheless?
Thank you very much!
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