Update README.md

README.md

@@ -9,7 +9,7 @@
 <!-- Provide a quick summary of what the model is/does. -->
 
 #Encoder from HICL: Hashtag-Driven In-Context Learning for Social Media Natural Language Understanding.
-The model can effectively extract topic-level embeddings.
+The model can effectively encode a tweet into topic-level embeddings. It can be used to estimate **topic-level similarity** between tweets.
 
 ## Model Details