hap_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
            self.veritas_model[&#39;shapvalues&#39;]=shap_values

        else: 

            X=df_test.values.astype(str)
        
            NULLSTR=np.array([&#39;&#39;]*len(model.feature_names))
            s_backgro