docstr: This method extends create_factors from Matrix Factorization, adding y factors
docstr_tok: ["This","method","extends","create_factors","from","Matrix","Factorization",",","adding","y","factors"]
code: def create_factors(self):
      """
      This method extends create_factors from Matrix Factorization, adding y factors
  
      """
  
      super(SVDPlusPlus, self).create_factors()
      self.y = np.random.normal(
          self.init_mean,
          self.init_stdev,
          (len(self.items), self.factors),
      )
  
file_path: CaseRecommender/caserec/recommenders/rating_prediction/svdplusplus.py
imports: import numpy
  from caserec.recommenders.rating_prediction.matrixfactorization import MatrixFactorization
label_desc: Use image node_id 4 for calling the SVDPlusPlus obj's underlying member method code with example usage: obj.create_factors() without return types