code: def _get_cat_x_row_mask(self):
      return np.isin(
          self.corpus_.get_category_names_by_row(), [self.category_name]
      )
  
imports: from abc import ABCMeta, abstractmethod
  from typing import Tuple
  import numpy
  import pandas
  from scattertext.ParsedCorpus import ParsedCorpus
  from scipy import stats
  from scipy.sparse import vstack
  from scattertext.util import inherits_from
  from scattertext.termranking import AbsoluteFrequencyRanker
  from scattertext.termranking.TermRanker import TermRanker
label_desc: Use image node_id 20 for calling the CorpusBasedTermScorer obj's underlying member method code with example usage: obj._get_cat_x_row_mask() and returns: np