Chat Engines
Chat engine is a high-level interface for having a conversation with your data
(multiple back-and-forth instead of a single question & answer).
Think ChatGPT, but augmented with your knowledge base.
Conceptually, it is a stateful analogous of a query engine.
By keeping track of the conversation history, it can answer questions with past context in mind.
We provide a few simple implementations to start, with more sophisticated modes coming soon!
More specifically, the SimpleChatEngine does not make use of a knowledge base,
whereas CondenseQuestionChatEngine and ReActChatEngine make use of a query engine over knowledge base.
Configuring a chat engine is very similar to configuring a query engine.
In the high-level API:
chat_engine = index.as_chat_engine(chat_mode='condense_question', verbose=True)
Note: you can access different chat engines by specifying the
chat_modeas a kwarg.condense_questioncorresponds toCondenseQuestionChatEngine,reactcorresponds toReActChatEngine.
In the low-level composition API:
query_engine = index.as_query_engine()
chat_engine = CondenseQuestionChatEngine.from_defaults(query_engine, verbose=True)
Below you can find corresponding tutorials to see the available chat engines in action.