Update app.py

app.py

@@ -16,10 +16,10 @@ def load_doc(pdf_doc):
     loader = PyMuPDFLoader(pdf_doc.name)
     documents = loader.load()
     embedding = HuggingFaceEmbeddings()
-    text_splitter = CharacterTextSplitter(chunk_size=2000, chunk_overlap=200)
+    text_splitter = CharacterTextSplitter(chunk_size=1000, chunk_overlap=100)
     text = text_splitter.split_documents(documents)
     db = Chroma.from_documents(text, embedding)
-    llm = HuggingFaceHub(repo_id="OpenAssistant/oasst-sft-1-pythia-12b", model_kwargs={"temperature": 1.0, "max_length": 256})
+    llm = HuggingFaceHub(repo_id="OpenAssistant/oasst-sft-1-pythia-12b", model_kwargs={"temperature": 1.0, "max_length": 512})
     global chain
     chain = RetrievalQA.from_chain_type(llm=llm,chain_type="stuff",retriever=db.as_retriever())
     return 'Document has successfully been loaded'