Update README.md

README.md

@@ -74,10 +74,21 @@ for i, (answer, prob) in enumerate(results):
 ---
 
 # Metrics
-The model achieves the following on the SQuAD 2.0 validation set:
-- **Exact Match (EM):** --%
-- **F1 Score:** --%
-
+Evaluation results using the official evaluation script on SQuAD 2.0 validation set:
+
+```json
+{
+  "exact": 80.29141750189505,
+  "f1": 83.22890970115323,
+  "total": 11873,
+  "HasAns_exact": 72.08164642375169,
+  "HasAns_f1": 77.96505480462089,
+  "HasAns_total": 5928,
+  "NoAns_exact": 88.47771236333053,
+  "NoAns_f1": 88.47771236333053,
+  "NoAns_total": 5945
+}
+```
 ---
 
 # Limitations