diff --git a/abl/abducer/abducer_base.py b/abl/abducer/abducer_base.py
index d52f74b..06845a3 100644
--- a/abl/abducer/abducer_base.py
+++ b/abl/abducer/abducer_base.py
@@ -51,7 +51,7 @@ class AbducerBase(abc.ABC):
             candidate = candidates[np.argmin(cost_list)]
             return candidate
     
-    def _get_zoopt_score(self, sol_x, pred_res, pred_res_prob, key):
+    def _zoopt_address_score_single(self, sol_x, pred_res, pred_res_prob, key):
         address_idx = np.where(sol_x != 0)[0]
         candidates = self.address_by_idx(pred_res, key, address_idx)
         if len(candidates) > 0:
@@ -61,12 +61,12 @@ class AbducerBase(abc.ABC):
     
     def _zoopt_address_score(self, pred_res, pred_res_prob, key, sol): 
         if not self.multiple_predictions:
-            return self._get_address_score(sol.get_x(), pred_res, pred_res_prob, key)
+            return self._zoopt_address_score_single(sol.get_x(), pred_res, pred_res_prob, key)
         else:
             all_address_flag = reform_idx(sol.get_x(), pred_res)
             score = 0
             for idx in range(len(pred_res)):
-                score += self._get_address_score(all_address_flag[idx], pred_res[idx], pred_res_prob[idx], key)
+                score += self._zoopt_address_score_single(all_address_flag[idx], pred_res[idx], pred_res_prob[idx], key)
             return score
         
     def _constrain_address_num(self, solution, max_address_num):