Update README.md

README.md

@@ -11,6 +11,8 @@ license: "gpl-3.0"
 
 Pre-trained weights for [Knowledge Enhance Masked Language Model for Stance Detection](https://2021.naacl.org/program/accepted/), NAACL 2021.
 
+We use the initialized weights from BERT-base (uncased) or `bert-base-uncased`.
+
 # Training Data
 
 This model is pre-trained on over 5 million English tweets about the 2020 US Presidential Election.