Update README.md

README.md

@@ -28,7 +28,8 @@ It achieves the following results on the evaluation set:
 
 ## Model description
 
-More information needed
+The given description for BERTweet by VinAI is as follows:
+BERTweet is the first public large-scale language model pre-trained for English Tweets. BERTweet is trained based on the RoBERTa pre-training procedure. The corpus used to pre-train BERTweet consists of 850M English Tweets (16B word tokens ~ 80GB), containing 845M Tweets streamed from 01/2012 to 08/2019 and 5M Tweets related to the COVID-19 pandemic.
 
 ## Intended uses & limitations