Update app.py

app.py

@@ -46,7 +46,7 @@ def create_retriever_from_chroma(vectorstore_path="docs/chroma/", search_type='m
     llm = llamacpp.LlamaCpp(
         model_path='qwen2-0_5b-instruct-q4_0.gguf',
         n_gpu_layers=0,
-        temperature=0.0,
+        temperature=0.1,
         top_p=0.9,
         n_ctx=22000,
         n_batch=2000,
@@ -83,7 +83,7 @@ def create_retriever_from_chroma(vectorstore_path="docs/chroma/", search_type='m
         )
     
     
-    retriever=vectorstore.as_retriever(search_type='mmr', search_kwargs={"k": 7})
+    retriever=vectorstore.as_retriever(search_type = search_type, search_kwargs={"k": k})
 
     rephrase_prompt = hub.pull("langchain-ai/chat-langchain-rephrase")