Knowledge-driven dialogue generation has recently made remarkable breakthroughs. Compared with general dialogue systems, superior knowledge-driven dialogue systems can generate more informative and knowledgeable responses with pre-provided knowledge. However, in practical applications, the dialogue system cannot be provided with corresponding knowledge in advance. In order to solve the problem, we design a knowledge-driven dialogue system named DRKQG (\emph{Dynamically Retrieving Knowledge via Query Generation for informative dialogue response}). Specifically, the system can be divided into two modules: query generation module and dialogue generation module. First, a time-aware mechanism is utilized to capture context information and a query can be generated for retrieving knowledge. Then, we integrate copy Mechanism and Transformers, which allows the response generation module produces responses derived from the context and retrieved knowledge. Experimental results at LIC2022, Language and Intelligence Technology Competition, show that our module outperforms the baseline model by a large margin on automatic evaluation metrics, while human evaluation by Baidu Linguistics team shows that our system achieves impressive results in Factually Correct and Knowledgeable.

为了实现对话系统的智能回答，文中设计了DRKQG，该系统能够根据上下文信息，在没有提前准备知识库的情况下通过搜索引擎检索相关知识，并利用生成模块同时考虑上下文信息和检索知识生成回答，实验结果表明，该模块在自动评估和人工评估两方面取得了优异的成绩。

通过查询生成实现信息对话生成中的动态知识检索