Recent conditional language models are able to continue any kind of text source in an often seemingly fluent way. This fact encouraged research in the area of open-domain conversational systems that are based on powerful language models and aim to imitate an interlocutor by generating appropriate contributions to a written dialogue. From a linguistic perspective, however, the complexity of contributing to a conversation is high. In this survey, we interpret Grice's maxims of cooperative conversation from the perspective of this specific research area and systematize the literature under the aspect of what makes a contribution appropriate: A neural conversation model has to be fluent, informative, consistent, coherent, and follow social norms. In order to ensure these qualities, recent approaches try to tame the underlying language models at various intervention points, such as data, training regime or decoding. Sorted by these categories and intervention points, we discuss promising attempts and suggest novel ways for future research.

探讨了基于强大语言模型的开放领域会话系统，从语言学角度解释了Grice的合作会话标准，并从使得贡献适切的角度系统化了相关文献：神经会话模型必须流畅、信息丰富、一致、连贯，并遵循社会规范。为了确保这些优势，近期的方法尝试通过干预数据、训练模式或解码等方面来控制底层语言模型，我们按照这些类别和干预点讨论了有前途的尝试，并为未来的研究提出了新的方向。

神经对话模型和如何控制：失败和修复的调查