中文搜索引擎的对比研究     

陈慧 《现代情报》2010,30(4):62-65

本文论述了搜索引擎的概念、基本原理、主要功能及作用,并针对国内比较著名的搜索引擎站点进行了详尽的分析,在此基础上,对中文网络搜索引擎发展的现状进行了分析,在看到中文搜索引擎发展的同时,也要看到中文搜索引擎在发展中存在的问题。  相似文献   

An Analysis of Undergraduate Students' Search Behaviors in an Information Literacy Class     

《Journal of Web Librarianship》2013,7(4):333-347

The purpose of this project was to investigate how students' search strategies changed over the course of a semester-long information literacy class. Data collection included four different paper questionnaires corresponding to course content in the spring 2008 semester. Seventy-seven participants completed the questionnaires and course work in the class. Results showed that participants' demographics did not have any impact on their selection of search keywords. While participants reported better search experiences with more search keywords, they were not able to develop more sophisticated search keywords after receiving more instruction and search experience. The participants who did develop more sophisticated search keywords had better search experiences and a higher rate of satisfaction with their research results. Future studies should examine what enabled these participants to develop more sophisticated search keywords.  相似文献   

基于用户满意度的图像搜索引擎评价研究     

王凡 《情报科学》2010,(2)

根据用户满意度理论,构建了图像搜索引擎用户满意度测评理论模型和图像搜索引擎用户满意度评价指标体系。选择知名的图像搜索引擎Google、百度和Ditto,以问卷调查的方式,调查用户对此三个图像搜索引擎的满意度。  相似文献   

移动增值业务服务质量保证策略的应用     

乐炯  陈信刚  应俊 《科技广场》2010,(9)

江西电信移动增值业务的迅速增长,包括免费群发、业务宣传等业务的大量下发,造成综合业务接入网关(ISAG)平台接口能力不足。为提升移动增值业务质量,节约ISAG平台扩容投资,实现在有限接口能力下优先保证重要收费业务的正常使用,在ISAG平台上实施软件开发并部署了移动增值业务服务质量保证策略。该策略紧密围绕江西电信差异化服务的指导方针,利用接口流量、优先等级、时间窗口等技术手段控制移动增值业务的下发,保证重要业务、敏感业务、高效益业务优先占用ISAG平台接口资源。通过策略部署,移动增值业务质量得到提高,用户感知得到提升。  相似文献   

不正常航班恢复模型的贪婪模拟退火算法研究   总被引：4，自引：0，他引：4  

唐小卫  高强  朱金福 《预测》2010,29(1):66-70

为解决不正常航班恢复对航空公司带来的严重影响，研究了不正常航班恢复模型及其优化算法，对现有不正常航班恢复优化模型提出适当改进，重点设计了一种贪婪模拟退火算法。算法融合了GRASP和模拟退火算法的特点，提高了领域解的选择效率并且降低了陷入局部最优解的概率。实例证明这种算法可以处理大规模的不正常航班恢复问题，并且能够达到时间代价与结果质量的均衡。  相似文献   

网络信息时代高校学科馆员发展方向的新探索   总被引：1，自引：0，他引：1  

崔丽华 《现代情报》2010,30(5):106-107,110

关于网络信息时代高校学科馆员岗位职责的扩展延伸,该论文从网络信息平台、讲座与培训、定题服务、科技查新服务几方面进行了论述,对高校学科馆员的发展方向进行了新的探索。  相似文献   

用户信息搜索行为与认知的国内外文献统计分析研究     

甘利人  吴鹏  钱敏 《现代情报》2010,30(9):3-8

基于认知理论的用户信息搜索行为研究越来越受到情报领域的重视,我们通过Science Direct期刊全文数据库搜索获得该研究方向的100多篇国外文献,并通过中文数据库CNKI获得百余篇国内相关文献,分别对国内外文献做了统计分析。总体来说,用户信息搜索行为与认知研究尚处于起步阶段,相关研究还有很大的提升空间。  相似文献   

ClinicalAccess: A Clinical Decision Support Tool     

Karen Crowell 《Medical reference services quarterly》2013,32(2):215-223

ClinicalAccess is a new clinical decision support tool that uses a question-and-answer format to mirror clinical decision-making strategies. The unique format of ClinicalAccess delivers concise, authoritative answers to more than 120,000 clinical questions. This column presents a review of the product, a sample search, and a comparison with other point-of-care search engines.  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