code: def lg(x):
      return np.log(x) / np.log(2)
  
file_path: scattertext/scattertext/termscoring/DeltaJSDivergence.py
imports: import numpy
  import pandas
  from scattertext.termscoring.CorpusBasedTermScorer import CorpusBasedTermScorer
label_desc: Use image node_id 1 for calling a global function with example usage: lg(x) and returns: unknown