Database and Intelligent Information Retrieval Laboratory (Database & Intelligence Information Retrieval Lab, referred to as DB-IIR), led by Professor Du Xiaoyong, focusing the issue of access and big data management and analysis of Web data to solve nonstandard Web knowledge Research laboratory. The laboratory is an important part of Data Engineering and Knowledge Engineering Laboratory of the Ministry of Education, under the Department of Computer Information School of Renmin University of China.

In the beginning, DB-IIR Lab put "What You Get Is What You Want" was established as the ideal target for all researchers strive for. This goal stems from research laboratories motivation, but also from the urgent needs of today's Internet development. Now Web has become the primary means for people to obtain knowledge, but people want Web access to knowledge in fact very difficult, because the non-normative knowledge and intelligence of search engines on the Web is not high. To solve these problems, the overall research ideas from the laboratory to improve intelligence and intelligent Internet search engine itself two aspects. Based on this, the lab currently has the following four research groups working on related research work: (1) database group; (2) data mining group; (3) Semantic Web and knowledge grid; (4) Knowledge Services Group.