_dynet.Expression.__mul__ NotImplementedError

[dreamilam]

I was running the dynet python tutorial.

import dynet as dy
# define the parameters
m = dy.ParameterCollection()
W = m.add_parameters((8,2))
V = m.add_parameters((1,8))
b = m.add_parameters((8))

# renew the computation graph
dy.renew_cg()

# create the network
x = dy.vecInput(2) # an input vector of size 2.
output = dy.logistic(V*(dy.tanh((W*x)+b)))

I am getting this error.

[dynet] random seed: 3380132027
[dynet] allocating memory: 512MB
[dynet] memory allocation done.
Traceback (most recent call last):
  File "xor.py", line 13, in <module>
    output = dy.logistic(V*(dy.tanh((W*x)+b)))
  File "_dynet.pyx", line 1907, in _dynet.Expression.__mul__
NotImplementedError

Don't know where the problem is. Any input would be appreciated.

[pmichel31415]

Are you using the latest version from github?

[chunchiehy]

I’ve tried your snippet with the latest version. It works fine.

[neubig]

Closing, but re-open if this is not a version issue.

[xcgfth]

@xbainbain , which version you use?

[xcgfth]

@dreamilam I also encountererd this problem, Did you have solve it?

[xcgfth]

Okay, I have sovled it.
use installation from github insetad of pip itself, like this:
pip install git+https://github.com/clab/dynet#egg=dynet