code: def _build_sparse_matrices(self, y, X_factory, mX_factory):
      return build_sparse_matrices(y, X_factory, mX_factory)
  
imports: import numpy
  import pandas
  from scattertext.AsianNLP import chinese_nlp
  from scattertext.CSRMatrixTools import CSRMatrixFactory
  from scattertext.TermDocMatrix import TermDocMatrix
  from scattertext.TermDocMatrixFactory import TermDocMatrixFactory
  from scattertext.TermDocMatrixWithoutCategories import TermDocMatrixWithoutCategories
  from scattertext.indexstore.IndexStore import IndexStore
label_desc: Use image node_id 4 for calling the TermDocMatrixFromPandas obj's underlying member method code with example usage: obj._build_sparse_matrices(y, X_factory, mX_factory) and returns: build_sparse_matrices