      .sort_values(&#39;shap&#39;,
                                           ascending=False).index.values
            
            modelneg.shap_index=self.shap_index
            modelpos.shap_index=self.shap_index

            # save veritas model
            self.veritas_model[&#39;version&#39;]=veritas_version
            self.veritas_model[&#39;model&#39;]=modelpos
            self.veritas_model[&#39;model_neg&#39;]=modelneg
            self.veritas_model[&#39;problem&#39;]=self.problem
            se