update evaluate-intent.py

examples/multi-task/evaluate-intent.py

@@ -15,7 +15,7 @@ def f1(preds, labels):
     tn = np.sum((labels == '0') & (preds == '0'))
     fp = np.sum((labels == '0') & (preds == '1'))
     fn = np.sum((labels == '1') & (preds == '0'))
-    p = tp * 1.0 / (tp + fp) 
+    p = tp * 1.0 / (tp + fp) * 1.0 
     r = tp * 1.0 / (tp + fn) * 1.0
     f1 = (2 * p * r) / (p + r + 1e-8)
     return f1