互动问答搜索及其对图书馆网络咨询的启示     

王忠华 《新世纪图书馆》2007,(2):72-75

论文介绍了互动问答搜索产生的背景和发展的状况，并通过网上调查和非介入式测试对国内三家网站提供的互动问答搜索服务的功能和质量进行了测试和评价，分析了其特色以及面临的问题，最后探讨了互动问答搜索给目前以CVRS为代表的图书馆网上参考咨询带来的某些启示。  相似文献   

高校学科馆员咨询服务工作初探   总被引：11，自引：0，他引：11  

费晓炜 《图书馆建设》2007,(1):77-79

本文介绍了高校学科馆员开展咨询服务工作的相关经验。本文作者主要进行了学科信息资源推介、本科生毕业论文参考咨询及教师科研课题检索3方面服务工作。文章认为加强学科专业知识及图书馆情报资料检索知识的学习,建立丰富的学科信息资源,密切同教师、学生学术科研方面的合作是搞好学科馆员工作的必要条件。  相似文献   

基于本体的论文检索系统的设计与实现     

沈磊 《现代图书情报技术》2007,2(2):24-27

运用本体理论对计算机学科领域中的数据结构进行本体描述，探讨其本体库的构建过程，并在此基础上设计和实现基于本体的试验性论文检索系统，提高系统的检索性能。  相似文献   

面向自然语言的数字图书馆智能信息检索研究     

何晓庆  王硕 《图书馆学研究》2007,(11):47-50

本文提出了一种面向自然语言的智能检索系统框架。该框架的核心是语义推理和个性化处理。该文采用OWL描述的Ontology作为语义推理的基础，以检索请求统计库和用户模式库来实现用户的个性化检索，检索结果以知识的形式返回给用户，能极大地满足用户的信息需求。  相似文献   

WWW检索工具比较研究   总被引：35，自引：1，他引：34  

章琳  张保明 《情报学报》1998,(4)

近年来,随着ＷＷＷ技术的广泛应用,使得Ｉｎｔｅｒｎｅｔ迅速发展。作为Ｉｎｔｅｒｎｅｔ网上的信息查找途径,ＷＷＷ检索站点已成为Ｉｎｔｅｒｎｅｔ网上最繁忙的站点之一。本文选取了Ｙａｈｏｏ、ＡｌｔａＶｉｓｔａ、Ｅｘｃｉｔｅ、ＨｏｔＢｏｔ、Ｉｎｆｏｓｅｋ、Ｌｙｃｏｓ、ＯｐｅｎＴｅｘｔ、ＷｅｂＣｒａｗｌｅｒ及ＭｅｔａＣｒａｗｌｅｒ等九个著名的ＷＷＷ检索工具,通过上网实验,分析比较各工具检索引擎的特点,并从用户角度指出检索引擎现阶段存在的问题。最后对开发我国的ＷＷＷ检索工具提出了建议  相似文献   

Search on surfaces: Exploring the potential of interactive tabletops for collaborative search tasks     

Meredith Ringel Morris  Danyel Fisher  Daniel Wigdor 《Information processing & management》2010

Collaborative information seeking often takes place in co-located settings; such opportunities may be planned (business colleagues meeting in a conference room or students working together in a library) or spontaneous (family members gathered in their living room or friends meeting at a café). Surface computing technologies (i.e., interactive tabletops) hold great potential for enhancing collaborative information seeking activities. Such devices provide engaging direct manipulation interactions, facilitate awareness of collaborators’ activities, and afford spatial organization of content. However, current tabletop technologies also present several challenges that creators of collaborative information seeking system must account for in their designs. In this article, we explore the design space for collaborative search systems on interactive tabletops, discussing the benefits and challenges of creating search applications for these devices. We discuss how features of our tabletop search prototypes TeamSearch, FourBySix Search, Cambiera, and WeSearch, illustrate different aspects of this design space.  相似文献   

Division of labour and sharing of knowledge for synchronous collaborative information retrieval     

Colum Foley  Alan F. Smeaton 《Information processing & management》2010

Synchronous collaborative information retrieval (SCIR) is concerned with supporting two or more users who search together at the same time in order to satisfy a shared information need. SCIR systems represent a paradigmatic shift in the way we view information retrieval, moving from an individual to a group process and as such the development of novel IR techniques is needed to support this. In this article we present what we believe are two key concepts for the development of effective SCIR namely division of labour (DoL) and sharing of knowledge (SoK). Together these concepts enable coordinated SCIR such that redundancy across group members is reduced whilst enabling each group member to benefit from the discoveries of their collaborators. In this article we outline techniques from state-of-the-art SCIR systems which support these two concepts, primarily through the provision of awareness widgets. We then outline some of our own work into system-mediated techniques for division of labour and sharing of knowledge in SCIR. Finally we conclude with a discussion on some possible future trends for these two coordination techniques.  相似文献   

Exploring features for the automatic identification of user goals in web search     

Mauro Rojas Herrera  Edleno Silva de Moura  Marco Cristo  Thomaz Philippe Silva  Altigran Soares da Silva 《Information processing & management》2010

Queries submitted to search engines can be classified according to the user goals into three distinct categories: navigational, informational, and transactional. Such classification may be useful, for instance, as additional information for advertisement selection algorithms and for search engine ranking functions, among other possible applications. This paper presents a study about the impact of using several features extracted from the document collection and query logs on the task of automatically identifying the users’ goals behind their queries. We propose the use of new features not previously reported in literature and study their impact on the quality of the query classification task. Further, we study the impact of each feature on different web collections, showing that the choice of the best set of features may change according to the target collection.  相似文献   

四连杆变幅机构平衡重系统的优化设计     

陈强努  宋厚却 《上海海事大学学报》1989,(4)

本文介绍了一种四连杆变幅机构平衡重系统的优化设计方法。它将该系统的设计归结为五维、5个目标函教、9个约束条件的数学模型,应用改进的随机方向法求该数学模型的最优解。经改进的随机方向法,对于解决机构类优化设计中经常出现的反正弦、反余弦函数变量值大于1的问题提出了笔者的看法。 文中进行了实例计算,其结果较用传统方法得出的结果有显著进步,可直接应用于实际生产。  相似文献   

地理临近对企业知识搜索效果的影响研究——基于结构洞理论视角     

应洪斌 《科技管理研究》2015,(20)

从结构洞理论的视角出发,提出地理临近对企业知识搜索效果的影响机制模型。通过对长三角地区制造业企业的实证研究发现:组织与其合作伙伴之间的地理临近性与知识搜索效果之间存在倒U型曲线关系;地理临近性和知识搜索效果之间的关系还受到结构洞的调节,地理临近性对知识搜索的负向效应在结构洞较多的情况下更明显,而地理临近性对知识搜索的正向效应则在结构洞较少情况下更为明显。  相似文献