update ad abtest threshold 173/ab2: mean/24*11 -> mean/48*23, 173/ab4: mean/48*23 -> mean/2

config.py

@@ -836,9 +836,9 @@ class BaseConfig(object):
         '173': {
             'ab0': {'group': 1 / 2, 'mean_group': 1 / 2},
             'ab1': {'group': 11 / 24, 'mean_group': 11 / 24},
-            'ab2': {'group': 11 / 24, 'mean_group': 11 / 24},
+            'ab2': {'group': 23 / 48, 'mean_group': 23 / 48},
             'ab3': {'group': 23 / 48, 'mean_group': 23 / 48},
-            'ab4': {'group': 23 / 48, 'mean_group': 23 / 48},
+            'ab4': {'group': 1 / 2, 'mean_group': 1 / 2},
             'ab5': {'group': 1 / 2, 'mean_group': 1 / 2},
             'ab6': {'group': 23 / 48, 'mean_group': 23 / 48},
             'ab7': {'group': 23 / 48, 'mean_group': 23 / 48},