message: Using pd.Series instead of pd.Dataframe
  Small change to use Series for x and y values for clarity and simplicity. Code executes equivalently afaict
diff: @@ -110,9 +110,9 @@ def main(unused_argv):
  # Prepare training and testing data
  dbpedia = tf.contrib.learn.datasets.load_dataset(
  'dbpedia', test_with_fake_data=FLAGS.test_with_fake_data)
  - x_train = pandas.DataFrame(dbpedia.train.data)[1]
  + x_train = pandas.Series(dbpedia.train.data[:,1])
  y_train = pandas.Series(dbpedia.train.target)
  - x_test = pandas.DataFrame(dbpedia.test.data)[1]
  + x_test = pandas.Series(dbpedia.test.data[:,1])
  y_test = pandas.Series(dbpedia.test.target)
  # Process vocabulary
  