output_theano_convolutional_vae.py

output_theano_convolutional_vae.py

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-47-0d6966774623> in <module>()
      4         local_RVs=local_RVs, observed_RVs=observed_RVs,
      5         encoder_params=(enc.params + dec.params),
----> 6         optimizer=adam
      7     )

/Users/peadarcoyle/anaconda/envs/py35/lib/python3.5/site-packages/pymc3/variational/advi_minibatch.py in advi_minibatch(vars, start, model, n, n_mcsamples, minibatch_RVs, minibatch_tensors, minibatches, local_RVs, observed_RVs, encoder_params, total_size, optimizer, learning_rate, epsilon, random_seed, verbose)
    325 
    326     # ELBO wrt variational parameters
--> 327     inarray_g, uw_g, replace_g = _join_global_RVs(global_RVs, global_order)
    328     inarray_l, uw_l, replace_l = _join_local_RVs(local_RVs, local_order)
    329     logpt = _make_logpt(global_RVs, local_RVs, observed_RVs, model)

/Users/peadarcoyle/anaconda/envs/py35/lib/python3.5/site-packages/pymc3/variational/advi_minibatch.py in _join_global_RVs(global_RVs, global_order)
     76 
     77 def _join_global_RVs(global_RVs, global_order):
---> 78     joined_global = tt.concatenate([v.ravel() for v in global_RVs])
     79     uw_global = tt.dvector('uw_global')
     80     uw_global.tag.test_value = np.concatenate([joined_global.tag.test_value,

/Users/peadarcoyle/anaconda/envs/py35/lib/python3.5/site-packages/theano/tensor/basic.py in concatenate(tensor_list, axis)
   4223             "or a list, make sure you did not forget () or [] around "
   4224             "arguments of concatenate.", tensor_list)
-> 4225     return join(axis, *tensor_list)
   4226 
   4227 

/Users/peadarcoyle/anaconda/envs/py35/lib/python3.5/site-packages/theano/gof/op.py in __call__(self, *inputs, **kwargs)
    609         """
    610         return_list = kwargs.pop('return_list', False)
--> 611         node = self.make_node(*inputs, **kwargs)
    612 
    613         if config.compute_test_value != 'off':

/Users/peadarcoyle/anaconda/envs/py35/lib/python3.5/site-packages/theano/tensor/basic.py in make_node(self, *axis_and_tensors)
   3738         axis, tensors = axis_and_tensors[0], axis_and_tensors[1:]
   3739         if not tensors:
-> 3740             raise ValueError('Cannot join an empty list of tensors')
   3741         as_tensor_variable_args = [as_tensor_variable(x) for x in tensors]
   3742 

ValueError: Cannot join an empty list of tensors