Humans seldom ask clarification questions for referential ambiguity, while LLMs ask them more often, and reasoning prompts increase LLM question frequency and relevance.
Ask what's missing and what's useful: Improving Clarification Question Generation using Global Knowledge
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abstract
The ability to generate clarification questions i.e., questions that identify useful missing information in a given context, is important in reducing ambiguity. Humans use previous experience with similar contexts to form a global view and compare it to the given context to ascertain what is missing and what is useful in the context. Inspired by this, we propose a model for clarification question generation where we first identify what is missing by taking a difference between the global and the local view and then train a model to identify what is useful and generate a question about it. Our model outperforms several baselines as judged by both automatic metrics and humans.
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2025 1verdicts
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Referential ambiguity and clarification requests: comparing human and LLM behaviour
Humans seldom ask clarification questions for referential ambiguity, while LLMs ask them more often, and reasoning prompts increase LLM question frequency and relevance.