diff --git a/learnware/market/easy/searcher.py b/learnware/market/easy/searcher.py
index 15b7262..63a47eb 100644
--- a/learnware/market/easy/searcher.py
+++ b/learnware/market/easy/searcher.py
@@ -588,9 +588,9 @@ class EasyStatSearcher(BaseSearcher):
 
         # Special Transform for ImageSpecification
         if self.stat_spec_type == "RKMEImageSpecification":
-            sorted_dist_list = [np.exp(-d / 0.00005) for d in sorted_dist_list]
+            sorted_dist_list = [1 - np.exp(-d / 0.00005) for d in sorted_dist_list]
             if mixture_dist is not None:
-                mixture_dist = np.exp(-mixture_dist / 0.00005)
+                mixture_dist = 1 - np.exp(-mixture_dist / 0.00005)
 
         if mixture_dist is None:
             sorted_score_list = self._convert_dist_to_score(sorted_dist_list)