def METHOD_NAME(self):
    if 'word_num_score' in self.__dict__:
        return self.word_num_score
    else:
        self._desc_detected_word_num = {x:len(self._call_biobert_tokenizer(x)) for x in self.desc_list}
        self.word_num_score = {desc: index for index, (desc, _) in enumerate(sorted(self._desc_detected_word_num.items(), key=lambda item: item[1], reverse=True))}
        return self.word_num_score