Add resport score for stree

update param_analysis for stree only

param_analysis.py

@@ -14,6 +14,7 @@ class Aggregation:
         self._dbh = dbh
         self._report = {}
         self._model_names = ["stree", "adaBoost", "bagging", "odte"]
+        self._model_names = ["stree"]
         self._kernel_names = kernel_names
 
     def find_values(self, dataset, parameter):
@@ -35,10 +36,13 @@ class Aggregation:
         print("Aggregating data of best results ...")
         for dataset in dt:
             if result := self._dbh.find_best(dataset[0]):
+                json_string = result[8] if result[8] != "" else "{}"
                 accuracy = result[5]
                 expected = result[10]
                 model = result[3]
-                json_result = json.loads(result[8])
+                if model != "stree":
+                    continue
+                json_result = json.loads(json_string)
                 if "kernel" in json_result.keys():
                     kernel = json_result["kernel"]
                 elif "base_estimator__kernel" in json_result.keys():