上下文信息检索研究综述  

Survey on Contextual Information Retrieval

作　　者：田萱[1] 李冬梅[1] 

机构地区：[1]北京林业大学信息学院,北京100083

出　　处：《计算机科学》2011年第9期18-24,共7页Computer Science

基　　金：北京林业大学新进教师科研启动基金(BLX2w8019);中央高校基本科研业务费专项资金(YX2011-30)资助

摘　　要：上下文信息检索强调把有关用户、资源和查询的上下文与信息检索技术统一组织在一个整体框架内,以向用户提供最适合用户需求的检索信息。全面介绍了上下文信息检索的研究现状,概括了国内外研究者对上下文信息检索过程中涉及的上下文因素及其分类,并从用户上下文、文档上下文和系统上下文3个角度对国内外有关上下文信息检索技术的研究作了概述。最后从5个方面探讨了上下文信息检索领域存在的挑战,指出对用户检索背后需求的探究、基于语义的理解和融合上下文的信息检索模型等将是该领域目前亟需解决的问题。With the development of IR techniques,contextual information retrieval（CIR） has been identified to be a promising direction for improving search.In CIR,the retrieval of information depends on the time and place of submitting query,history of interaction,task in hand,and many other factors that are not given explicitly but lie implicitly in the interaction and surroundings of searching,namely the context.In this paper,a survey on research work of CIR was given,and the contextual elements of CIR were summarized.In addition,contextual elements were summarized into user context,document context,and system context and the related research work where introduced.At last,the key challenges in CIR were discussed from five aspects.Exploitation of real need behind user＇s query,search based on semantic understanding,contextual information retrieval model and et al were pointed out as main problems needed to be resolved.

关 键 词：上下文信息检索 上下文 个性化检索 检索模型 语义理解 

分 类 号：TP391.1[自动化与计算机技术—计算机应用技术]