Update app.py

app.py

@@ -37,7 +37,7 @@ EXAMPLE_QUERIES = [
 EMBEDDING_MODEL_NAME = "all-MiniLM-L12-v2"
 
 # The LLM model name
-LLM_MODEL_NAME = "Qwen/Qwen2.5-1.5B-Instruct"
+LLM_MODEL_NAME = "Qwen/Qwen2.5-7B-Instruct"
 
 # The number of publications to retrieve
 PUBLICATIONS_TO_RETRIEVE = 5