theano

I have what is conceptually a simple question about Theano but I haven't been able to find the answer (I'll confess upfront to not really understanding how shared variables work in Theano, despite many hours with the tutorials). I'm trying to implement a "deconvolutional network"; specifically I have a 3-tensor of inputs (each input is a 2D image) and a 4-tensor of codes; for the ith input codes[i] represents a set of codewords which together code for input i. I've been having a lot of trouble figuring out how to do gradient descent on the codewords. Here are the relevant parts of my code: idx

Suppose I have implemented the following function in Theano: import theano.tensor as T from theano import function x = T.dscalar('x') y = T.dscalar('y') z = x + y f = function([x, y], z) When I try to run it a graph of computations is constructed, the function gets optimized and compiled. How can I reuse this compiled chunk of code from within a Python script and/or a C++ application? EDIT: The goal is to construct a deep learning network and reuse it in a final C++ app. nouiz Currently this isn't possible. There is user that modified Theano to allow pickling the Theano function, but during

I made a pretty simple NN model to do some non-linear regressions for me in Keras, as an introduction exercise. I uploaded my jupyter notebookit as a gist here (renders properly on github), which is pretty short and to the point. It just fits the 1D function y = (x - 5)^2 / 25. I know that Theano and Tensorflow are, at their core, graph based derivative (gradient) passing frameworks. And utilizing the gradients of loss functions with respect to weights for gradient step-based optimization are the main purpose of that. But what I'm trying to get sense of is if I have access to something that,

I installed Theano on my machine, but the nosetests break with a Numpy/Fortran related error message. For me it looks like Numpy was compiled with a different Fortran version than Theano. I already reinstalled Theano ( sudo pip uninstall theano + sudo pip install --upgrade --no-deps theano ) and Numpy / Scipy ( apt-get install --reinstall python-numpy python-scipy ), but this did not help. What steps would you recommend? Complete error message: ImportError: ('/home/Nick/.theano/compiledir_Linux-2.6.35-31-generic-x86_64-with-Ubuntu-10.10-maverick--2.6.6/tmpIhWJaI