npmat.py:488 RuntimeWarning

[petercim]

Hi,

Is anyone familiar with the error below? It appears sometimes when I change the number of hidden or end layers, or scale the data. The code continues to run, but the loss is always "nan".

[DBN] Fine-tune...
/Library/Python/2.7/site-packages/npmat.py:488: RuntimeWarning: invalid value encountered in multiply
target.numpy_array[:] = vec.numpy_array * self.numpy_array
/Library/Python/2.7/site-packages/npmat.py:433: RuntimeWarning: invalid value encountered in add
target.numpy_array[:] = vec.numpy_array + self.numpy_array
/Library/Python/2.7/site-packages/npmat.py:617: RuntimeWarning: invalid value encountered in greater
target.numpy_array[:] = (self.numpy_array > val).astype(DTYPE)
/Library/Python/2.7/site-packages/npmat.py:588: RuntimeWarning: invalid value encountered in less
target.numpy_array[:] = self.numpy_array < val
100%
Epoch 1:
loss nan
err 0.13142703202
(0:00:02)

Peter

[dnouri]

This is hard to debug without more context. I've given up on supporting nolearn.dbn in master. Maybe you want to give nolearn.lasagne a try? It's got a lot of improvements over the dbn module.