Feedback such as backchannels and clarification requests often occurs subsententially, demonstrating the incremental nature of grounding in dialogue. However, although such feedback can occur at any point within an utterance, it typically does not do so, tending to occur at Feedback Relevance Spaces (FRSs). We present a corpus study of acknowledgements and clarification requests in British English, and describe how our low-level, semantic processing model in Dynamic Syntax accounts for this feedback. The model trivially accounts for the 85% of cases where feedback occurs at FRSs, but we also describe how it can be integrated or interpreted at non-FRSs using the predictive, incremental and interactive nature of the formalism. This model shows how feedback serves to continually realign processing contexts and thus manage the characteristic divergence and convergence that is key to moving dialogue forward.

诸如反向渠道和澄清请求之类的反馈通常是在本质上发生的，这表明对话基础的增量性质。然而，虽然这样的反馈可以出现在话语中的任何一点，它通常不会这样做，往往发生在反馈相关空间 (FRS)。我们展示了对英式英语确认和澄清请求的语料库研究，并描述了我们在动态语法中的低级语义处理模型如何解释这种反馈。该模型微不足道地解释了 85% 在 FRS 中发生反馈的情况，但我们还描述了如何使用形式主义的预测性、增量性和交互性在非 FRS 中对其进行集成或解释。该模型展示了反馈如何不断地重新调整处理上下文，从而管理对推进对话至关重要的特征发散和收敛。