class_docstr: An implementation of TextRank algorithm for summarization.
  
  Source: https://web.eecs.umich.edu/~mihalcea/papers/mihalcea.emnlp04.pdf
class_docstr_tok: ["An","implementation","of","TextRank","algorithm","for","summarization",".","Source",":","https",":","\/\/web.eecs.umich.edu\/~mihalcea\/papers\/mihalcea.emnlp04.pdf"]
code: def __call__(self, document, sentences_count):
      self._ensure_dependencies_installed()
      if not document.sentences:
          return ()
  
      ratings = self.rate_sentences(document)
      return self._get_best_sentences(
          document.sentences, sentences_count, ratings
      )
  
file_path: sumy/sumy/summarizers/text_rank.py
imports: from __future__ import absolute_import
  from __future__ import division, print_function, unicode_literals
  import math
  from ._summarizer import AbstractSummarizer
label_desc: Use image node_id 3 for calling the TextRankSummarizer obj's underlying member method code with example usage: obj.__call__(document, sentences_count) and returns: self, 