code: def vectorizer():
      vectorizer_ = Vectorizer(
          tf_type="linear",
          idf_type="smooth",
          norm=None,
          min_df=1,
          max_df=1.0,
          max_n_terms=None,
      )
      return vectorizer_
  
imports: import numpy
  import pytest
  from sklearn.decomposition import NMF, LatentDirichletAllocation, TruncatedSVD
  from textacy import Corpus
  from textacy import extract
  from textacy.tm import TopicModel
  from textacy.representations import Vectorizer
label_desc: Use image node_id 2 for calling a global function with example usage: vectorizer() and returns: vectorizer_