negative indices are currently unsupported in rnn example

[vinayakumarr]

import random
import numpy as np
from sklearn import datasets
from sklearn.metrics import accuracy_score, mean_squared_error

import tensorflow as tf

import skflow

random.seed(42)
data = np.array(list([[2, 1, 2, 2, 3],
[2, 2, 3, 4, 5],
[3, 3, 1, 2, 1],
[2, 4, 5, 4, 1]]), dtype=np.float32)

labels for classification

labels = np.array(list([1, 0, 1, 0]), dtype=np.float32)

targets for regression

targets = np.array(list([10, 16, 10, 16]), dtype=np.float32)
test_data = np.array(list([[1, 3, 3, 2, 1], [2, 3, 4, 5, 6]]))

def input_fn(X):
return tf.split(1, 5, X)

    # Classification

classifier = skflow.TensorFlowRNNClassifier(rnn_size=2, cell_type='lstm', n_classes=2, input_op_fn=input_fn)
classifier.fit(data, labels)
classifier.weights_
classifier.bias_
predictions = classifier.predict(test_data)
self.assertAllClose(predictions, np.array([1, 0]))

classifier = skflow.TensorFlowRNNClassifier(rnn_size=2, cell_type='rnn', n_classes=2,input_op_fn=input_fn, num_layers=2)
classifier.fit(data, labels)
classifier = skflow.TensorFlowRNNClassifier(rnn_size=2, cell_type='invalid_cell_type', n_classes=2,input_op_fn=input_fn, num_layers=2)
with self.assertRaises(ValueError):
classifier.fit(data, labels)

Regression

regressor = skflow.TensorFlowRNNRegressor(rnn_size=2, cell_type='gru', input_op_fn=input_fn)
regressor.fit(data, targets)
regressor.weights_
regressor.bias_
predictions = regressor.predict(test_data)

[ilblackdragon]

This is a problem with older version of Tensorflow.
Please try updating to Tensorflow 0.7+.
Also note that skflow will be bundled in next release of Tensorflow. (tf.contrib.skflow)

[vinayakumarr]

Am using tensorflow 0.7.1 and skflow 0.1.0. Then also it is showing same error. Please have a look on the attached image