code: def _invnorm(self, scores: np.array) -> np.array:
      scores[scores < self.alpha] = self.alpha
      scores[scores > 1 - self.alpha] = 1 - self.alpha
      return norm.ppf(scores)
  
file_path: scattertext/scattertext/termscoring/BNSScorer.py
imports: import pandas
  import numpy
  from scipy.stats import norm
  from scattertext.termscoring.CorpusBasedTermScorer import CorpusBasedTermScorer
label_desc: Use image node_id 4 for calling the BNSScorer obj's underlying member method code with example usage: obj._invnorm(scores) and returns: norm