Update vector_store_retriever.py

vector_store_retriever.py

@@ -6,9 +6,8 @@ from langchain.text_splitter import RecursiveCharacterTextSplitter
 
 # Initialize the HuggingFaceInstructEmbeddings
 hf = HuggingFaceInstructEmbeddings(
-    model_name="hkunlp/instructor-large",
-    embed_instruction="Represent the document for retrieval: ",
-    query_instruction="Represent the query for retrieval: "
+    model_name="sentence-transformers/all-MiniLM-L6-v2",  
+    model_kwargs={"device": "cpu"}
 )
 
 # Load and process the PDF files