code: def rescale_idf(val: float, min_idf: float, max_idf: float) -> float:
      """Rescale idf values."""
      return (val - min_idf) / (max_idf - min_idf)
  
file_path: cltk/src/cltk/embeddings/sentence.py
imports: from typing import Dict, List, Tuple, Union, ValuesView
  import numpy
  from sklearn.decomposition import TruncatedSVD
  from cltk.core import Sentence
label_desc: Use image node_id 1 for calling a global function with example usage: rescale_idf(val, min_idf, max_idf) and returns: unknown