Update README.md

README.md

@@ -71,7 +71,7 @@ The model performs automated extraction of functionality concepts from source do
 
 ## Training and evaluation data
 
-The model was trained on the req_mod_ner dataset. This dataset is private and contains 300 sentences/phrases and 1,954 IOB2 labels. 
+The model was trained on the req_mod_ner dataset. This dataset is private and contains 300 sentences/phrases and 1,954 IOB2 labels. The dataset is split 240/30/30 into train, validation and test. The reported metrics are from the evaluation on the test set. The validation set was used for cross-validation during training.
 
 ## Training procedure