updated scores

server/tasks/task1_missing.py

@@ -30,9 +30,9 @@ def load():
 def score(current_df, original_nulls: int) -> float:
     """Score in [0, 1]: fraction of nulls filled."""
     if original_nulls == 0:
-        return 1.0
+        return 0.999
     remaining = int(current_df.isnull().sum().sum())
-    return round(max(0.0, 1.0 - remaining / original_nulls), 4)
+    return round(max(0.001, min(0.999, 1.0 - remaining / original_nulls)), 4)
 
 
 def count_errors(current_df) -> int:

server/tasks/task2_format.py

@@ -56,7 +56,7 @@ def score(current_df, meta: dict) -> float:
     dupe_score  = 1.0 - dupes        / max(meta["orig_dupes"], 1)
 
     combined = 0.35 * phone_score + 0.35 * date_score + 0.30 * dupe_score
-    return round(max(0.0, min(1.0, combined)), 4)
+    return round(max(0.001, min(0.999, combined)), 4)
 
 
 def count_errors(current_df, meta: dict) -> int:

server/tasks/task3_pipeline.py

@@ -87,7 +87,7 @@ def score(current_df, meta: dict) -> float:
 
     combined = 0.25 * null_score + 0.20 * dupe_score + 0.20 * outlier_score \
              + 0.175 * country_score + 0.175 * date_score
-    return round(max(0.0, min(1.0, combined)), 4)
+    return round(max(0.001, min(0.999, combined)), 4)
 
 
 def count_errors(current_df, meta: dict) -> int: