Update src/rag_engine.py

src/rag_engine.py

@@ -34,7 +34,7 @@ class ProjectRAGEngine:
             all_docs.extend(loader.load())
 
         splitter = RecursiveCharacterTextSplitter(
-            chunk_size=250,
+            chunk_size=500,
             chunk_overlap=50
         )
 
@@ -64,7 +64,7 @@ class ProjectRAGEngine:
         """
 
         prompt = ChatPromptTemplate.from_template(template)
-        retriever = self.vector_store.as_retriever(search_kwargs={"k": 5})
+        retriever = self.vector_store.as_retriever(search_type="mmr", search_kwargs={"k": 5, "lambda_mult":0.25})
 
         rag_chain = (
             RunnablePassthrough.assign(