  def get_tokenized_imdb(data):
      """Get the tokenized IMDB data set for sentiment analysis."""
      def tokenizer(text):
          return [tok.lower() for tok in text.split(' ')]
  
  def get_vocab_imdb(data):
      """Get the vocab for the IMBD data set for sentiment analysis."""
      tokenized_data = get_tokenized_imdb(data)
      counter = collections.Counter([tk for st in tokenized_data for tk in st])
 
</s> remove def get_tokenized_imdb(train_data, test_data):
 </s> add def get_tokenized_imdb(data):
    return [tokenizer(review) for review, _ in data]
  def get_tokenized_imdb(data):
      """Get the tokenized IMDB data set for sentiment analysis."""
      def tokenizer(text):
          return [tok.lower() for tok in text.split(' ')]
    return [tokenizer(review) for review, _ in data]
  
  def get_vocab_imdb(data):
      """Get the vocab for the IMBD data set for sentiment analysis."""
      tokenized_data = get_tokenized_imdb(data)
      counter = collections.Counter([tk for st in tokenized_data for tk in st])
keep keep keep add keep keep keep keep keep
 update sentiment analysis. done coding, need to polish text 
gluonbook/utils.py