code: def _set_scorer_args(self, **kwargs):
      self.alpha = kwargs.get("alpha", BNS_ALPHA_DEFAULT)
      if self.alpha is None:
          self.alpha = (
              1.0
              / pd.Series(self.corpus_.get_category_ids())
              .value_counts()
              .min()
          )
      assert 0 <= self.alpha <= 1
  
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 1 for calling the BNSScorer obj's underlying member method code with example usage: obj._set_scorer_args() without return types