Initialization of self._predict_stochastic

[jjkernst]

Hi, I am attempting to run the Examples/sentiment_lstm_regression.py however I am running into some issues: it keeps failing on the initialization of the predict_stochastic function in the first callback of modeltest.

First the function fails on X = models.standardize_X(X), due to the below error. Is this function supposed to be standardize(X)? I can't find a standardize_X in the latest Keras pull (I am using 1.0.3)?
AttributeError: 'module' object has no attribute 'standardize_X'

The function then also fails on defining the K function because neither model.X_test nor model.y_train are defined. The example doesn't have a test set passed into the fit model, so I'm not sure which variable this would be referencing.
K.function([self.model.X_test], [self.model.y_train])
AttributeError: 'Sequential' object has no attribute 'X_test'

If I remove the Modeltest call backs, the training works fine.

Any help you could provide would be greatly appreciated. Thanks!

[jasonbunk]

I fixed these issues with the following changes:

• In callbacks.py, insert this at line 6:

def standardize_X(X):
    if type(X) == list:
        return X
    else:
        return [X]

then replace "X = models.standardize_X(X)" with "X = standardize_X(X)"

• In callbacks.py, replace the line

self._predict_stochastic = K.function([self.model.X_test], [self.model.y_train])

with the following (using the Theano backend of Keras):

self._predict_stochastic = K.function([self.model.inputs[0]],
                    [self.model.outputs[0]], givens={K.learning_phase(): np.uint8(1)})

• I also had to insert this at line 51 of sentiment_lstm_regression.py:

X_train = np.asarray(X_train)
X_test  = np.asarray(X_test)
Y_train = np.asarray(Y_train)
Y_test  = np.asarray(Y_test)

[Chealkeo]

I fixed these issues with the following changes:

• In callbacks.py, insert this at line 6:

def standardize_X(X):
    if type(X) == list:
        return X
    else:
        return [X]

then replace "X = models.standardize_X(X)" with "X = standardize_X(X)"

• In callbacks.py, replace the line

self._predict_stochastic = K.function([self.model.X_test], [self.model.y_train])

with the following (using the Theano backend of Keras):

self._predict_stochastic = K.function([self.model.inputs[0]],
                    [self.model.outputs[0]], givens={K.learning_phase(): np.uint8(1)})

• I also had to insert this at line 51 of sentiment_lstm_regression.py:

X_train = np.asarray(X_train)
X_test  = np.asarray(X_test)
Y_train = np.asarray(Y_train)
Y_test  = np.asarray(Y_test)

hi, thanks for your solution, furthermore, I want to clear which version of theano and keras used in above code?