benanne/nntools — pull request #62 by f0k (2014-12-10 12:02:07+00:00)
Title: Weighted elementwise sum layer

This PR adds a layer that computes a weighted sum of its input layers. This can often serve as an alternative to concatenating layers.
The PR is on top of #61 -- if you merge that first, everything is fine, otherwise I can modify this PR to remove the first commit.