Comments (1)
Hi Weixsong,
I do not quite see what you mean when you are referring to my "validation code" then, if I do not answer what you need, do not hesitate to ask me again.
Following the explanation that I did in the slides and the Master Thesis, there are different ways to make predictions using MDNs models. For example, you can plot the PDF as a errorbar plot, you can use the parameters that you obtain from the MDN model to do a sampling process, you can plot a heat-map like in the end of the notebook MDN-2D-Regression.ipynb, etc. In all these cases, mu and sigma are used.
Answering your second question, when you implement an MDN model, this mixture has a combination of a certain probabilistic functions. In particular, the cases I have discussed was a mixture of all Gaussians or Laplacians functions but you could define the mixture that interested you (like here). What you should keep in mind is that you are training a neural network to be able to give you the parameters for that predefined mixture and not for any type of PDF.
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