      explainer = shap.KernelExplainer(funcw_,np.array([s_background]))
            shap_values = explainer.shap_values(X[:shapnum])
            
            self.shap_index=pd.DataFrame(shap_values.mean(axis=0),
                                         columns=[&#39;shap&#39;])\
                              .sort_values(&#39;shap&#39;,
                                           ascending=False).index.values
            
            modelneg.shap_index=self.shap_index
            modelpos.shap_index=self.s