def METHOD_NAME(self, vocab_path):
    self._freq_dict = json.loads(
        open(vocab_path + '.freq.json', 'r', encoding='utf-8').read())
    self._word2idx = json.loads(
        open(vocab_path + '.word2idx.json', 'r', encoding='utf-8').read())
    self._idx2word = {}
    for w, idx in self._word2idx.items():
        self._idx2word[idx] = w
    self.vocab_size_oov = len(self._idx2word)
    logger.info('vocab file loaded from "' + vocab_path + '"')
    logger.info('Vocabulary size including oov: %d' %
                (self.vocab_size_oov))