When RAG Users Ask Vague Questions: Clarify Once, Learn the Default

When building enterprise RAG systems, users often ask vague questions that lack necessary context, such as which document page or clause type to reference. A robust approach is to ask for clarification once, learn the user's preference as a default, and apply it silently in future similar situations. This pattern can be implemented using two Pydantic schemas: a `ClarificationRequest` to query the user and a `ClarificationDefault` to store the learned preference. The system learns by tracking user responses to update a confidence score for each default, which determines whether to ask for clarification or apply the learned default automatically.