Bilinear layer randomness

[tylee-fdcl]

First, thanks for the great work! This is really helpful in several ways.

While playing with your code, I encountered random behaviors of emlp, and figured that it is caused by the bilinear layer. I wish I have checked the issue #8 down below, Saving and Loading Objax EMLPs yields slightly different predictions, before trying to identify it myself. Two things:

1. It was suggested to use the same numpy random seed as a workaround. But, I'm checking if there is another way to resolve this, such as saving and loading additional parameters from the bilinear layer.
2. In fact, the only part in your paper and code that is unclear to me is the bilinear layer. I do not understand why there is randomness in the bilinear layer, if it is presumably calculating something like x^T A x + b x + c with projections. It would be really helpful to understand what it is, if the mathematical expressions for your bilinear layer is provided. Thanks.