Update features for hyb nn

qlib/workflow/record_temp.py

@@ -186,6 +186,9 @@ class SigAnaRecord(SignalRecord):
 
         pred = self.load("pred.pkl")
         label = self.load("label.pkl")
+        if label is None or not isinstance(label, pd.DataFrame) or label.empty:
+            logger.warn(f"Empty label.")
+            return
         ic, ric = calc_ic(pred.iloc[:, 0], label.iloc[:, 0])
         metrics = {
             "IC": ic.mean(),