A user poses a few queries to locate information of interest. The user may also navigate to the web site to select some objects of interest. After this preliminary interaction, when the user is inactive or away, an intelligent information retrieval system will search the web sites to find all the relevant web pages which constitute a virtual site. It then builds conceptual views containing the information relevant to the specific domains. The information, even if originally expressed in different formats, will be presented in a unified way. After a careful analysis of the database, the user again poses imprecise web queries and navigates the web to locate objects of interest, leading to the next cycle of intelligent information retrieval.