共查询到20条相似文献，搜索用时 203 毫秒
1.
以服务为导向的联邦检索系统,采用基于开放标准和协议的数据集成技术,较好地解决了已有联邦检索系统数据集成的一些技术瓶颈,实现了数据的实际集成,提高了系统数据集成的质量.本文就联邦检索系统中以服务为导向的架构及其在信息服务机构资源优化集成技术中的应用进行了探讨,旨在为联邦检索系统的建设和完善提供了一种思路. 相似文献
2.
基于数据库联邦方式的多数据源集成检索系统 总被引：1，自引：0，他引：1
黄永文 《现代图书情报技术》2005,21(11):57-60
介绍了多数据源集成检索系统的产生背景和实现方式，分析了基于数据库联邦方式的多数据源集成检索系统的体系框架和异构问题，对国外的基于数据库联邦方式的多数据源集成检索系统进行了介绍和比较分析。 相似文献
3.
但旺 《浙江高校图书情报工作》2007,(4):12-15
由中国教育图书进出口公司历时近4年开发成功的开放存取资源集成检索系统—Socolar,将于2007年7月面向社会公开测试。这是国内首个向公众开放的开放存取(OA)资源的集成平台,它不仅集成了较有气候的OA刊物,还集成了国内日渐成热点的OA机构仓储资源,而且它的检索系统也具有自己的一些特色。本文就其内容与检索系统进行介绍与评述,并对其提出一些改进建议。 相似文献
4.
本文根据惯用的传统的ado分页算法以及select top分页算法两种加以分析,并且对两种算法的特点做出对比并加以阐述。两种算法的实践运行状态结果可以表明,数据量少的应该采用ado排序,数据量大的应该采用select top算法,可以明显的提高浏览和访问速度。 相似文献
6.
东华大学图书馆自动化及网络化建设 总被引：2，自引：0，他引：2
介绍了东华大学图书馆自动化及网络化现状,并提出了具体的改进方案.主要包括三方面的内容改善图书馆网络化环境;更新图书馆计算机集成管理系统;建立先进的光盘检索系统,利用网络共享电子化资源. 相似文献
7.
分报告四：斯坦福大学图书馆考察报告 总被引：2，自引：0，他引：2
文章是作者访问斯坦福大学图书馆的,小结报告,概述了斯坦福大学图书馆工程分馆的发展战略和现状,介绍了斯坦福大学图书馆富有特色的服务内容,包括在线集成书目检索系统、参考咨询服务、学科导航服务、社会科学数据与软件服务、集成跨库检索系统、教学参考书预留系统、服务插件等等,文章还分析了斯坦福大学图书馆的学科馆员制度。 相似文献
8.
国内外跨库检索系统功能的比较研究 总被引：6，自引：0，他引：6
选取国内外较有代表性的6个跨库检索系统:SearchLight、NLM Gateway、ISI CrossSearch、CALIS的统一检索平台、CSDL的集成检索系统、CNKI的跨库检索系统,从资源导航功能、检索功能、检索结果显示功能、内容敏感链接功能、个性化服务功能、特色功能、其他辅助功能7个方面对其进行比较分析,提出完善跨库检索系统功能的几点建议。 相似文献
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[目的/意义]数据源描述（又称数据源摘要）是Deep Web集成检索领域存在的关键问题之一,数据源描述的质量直接影响着集成检索系统的检索效率和效果。本文提出一种基于领域特征和用户查询取样的数据源描述方法,以期为非合作环境下资源集成应用与研究提供参考和借鉴。[方法/过程]该方法为异构非合作型数据源的离线取样方法,通过分析数据源和用于查询的领域主题属性,依次构建领域特征词集、初始特征词集和高频特征词集,并最终获得以高频特征词查询取样的数据源描述信息。结合流行的CORI算法,深入分析基于推理网络的用户查询与数据源描述的相关度计算方法,并基于此方法设计基于Lemur工具集的集成检索系统,验证了上述方法的有效性。[结果/结论]所提方法在查全率和查准率方面均得到很好的表现。与其他方法相比,该方法在样本数据自动更新和运维管理方面具有明显成本优势和实用价值。 相似文献
10.
介绍了东华大学图书馆自动化及网络化现状,并提出了具体的改进方案。主要包括三方面的内容：改善图书馆网络化环境;更新图书馆计算机集成管理系统;建立先进的光盘检索系统,利用网络共享电子化资源。 相似文献
11.
BioSYNTHESIS is a prototype intelligent retrieval system under development as part of the IAIMS project at Georgetown University. The aim is to create an integrated system that can retrieve information located on disparate computer systems. The project work has been divided in two phases: BioSYNTHESIS I, development of a single menu to access various databases which reside on different computers; and BioSYNTHESIS II, development of a search component that facilitates complex searching for the user. BioSYNTHESIS II will accept a user's query and conduct a search for appropriate information in the IAIMS databases at Georgetown. For information not available at Georgetown, such as full text, it will access selected remote systems and translate the search query as appropriate for the target system. The search through various computer systems and different databases with unique storage and retrieval structures will be transparent to the user. BioSYNTHESIS I is complete and available to users. The design work for BioSYNTHESIS II is under development and will continue as a multiyear technical research effort of the proposed Georgetown IAIMS implementation project. 相似文献
12.
《The Reference Librarian》2013,54(33):125-141
In August of 1989, the Library of Congress selected fourteen libraries nationwide to participate in a pilot project to test and determine the feasibility and desirability of remote online access to the Library's information system. The California State Library was selected as one of the participant libraries. During the project, State Library staff performed 187 subject searches on various topics in the Library of Congress Information System (LOCIS). LOCIS was easy to search, and contained a variety of useful search features. Overall, staff found access to LOCIS to be a valuable addition to our existing online search services. 相似文献
13.
新颖性判定是科技查新工作的关键,而科研立项查新中新颖性的判定更具有一定的特殊性和难度。面对科研立项查新中经过初步检索判定为不具备新颖性的项目,查新员不应将其"一棍子打死",直接下结论:"该委托项目不具备新颖性",而应该在不违反科技查新规范的前提下,变被动服务为主动服务,凭借自身丰富的查新经验和相关专业知识积累,为委托人提供指导性的意见和建议,协助其重新审视委托项目,确定新的技术要点,开辟新颖性突破口。 相似文献
14.
《Journal of Web Librarianship》2013,7(4):525-547
ABSTRACT Search engine use is one of the most popular online activities. According to a recent OCLC report, nearly all students start their electronic research using a search engine instead of the library Web site. Instead of viewing search engines as competition, however, librarians at Binghamton University Libraries decided to employ search engine optimization strategies to make their Web site more visible on the search engine result pages. Although search engine optimization is used frequently by commercial Web sites, few libraries have attempted to optimize their own sites. This article describes Binghamton University's experiences in developing and implementing an optimization pilot project. The research presented in this article has importance for libraries who may be considering an optimization project for their own sites. 相似文献
15.
《The Reference Librarian》2013,54(34):15-26
The increasing availability of computerized information sources and networking capabilities, along with the proliferation of microcomputers in faculty homes and offices, has led to increased demands for direct access to databases. The librarian's role as online search intermediary appears to be changing from performing searches directly to aiding users in doing their own searching. The Research Libraries Information Network (RLIN), one of the major cataloging utilities, offers a wealth of bibliographic information in both its online union catalog, and its many specialized files. The University at Albany Libraries participated in a pilot project involving faculty end-user access to RLIN. This paper reports on the Libraries' experience with the pilot project and the continuing end-user access program for faculty. Despite some reservations about the relative user-friendliness of the RLIN search system, the author enthusiastcally endorses the use of RLIN as an end-user database. 相似文献
16.
The MELVYL MEDLINE project resulted in the addition of a full five-year subset of MEDLINE to the University of California's (UC) MELVYL online union catalog. As one of the nation's largest MEDLINE end-user searching systems, MELVYL MEDLINE provides online bibliographic access to the biomedical journal literature for all UC personnel at over seventy library sites or by remote access. This paper summarizes the project's accomplishments, reports MELVYL MEDLINE use and its impact on library services, and provides insights for other end-user search systems. The project serves as a model for adding databases to the MELVYL catalog and demonstrates the potential for use by other disciplines of a specialized database when readily accessible. Evaluation results report high user satisfaction and high usage. However, many advanced searching features of the interface are little used by searchers. Effects on library services include marked increases in reference transactions and interlibrary loans, with significant declines in mediated search services. Future MELVYL MEDLINE enhancements include matching search retrievals to journal locations, linkage to an online document delivery system, and consideration of building a superset of databases by combining MELVYL MEDLINE with citations from another database in the MELVYL catalog. 相似文献
17.
web中大量新闻网页、博客、电子邮件等非结构化信息中蕴含着大量的知识,对其进行处理以自动获得知识具有重要意义。目前,一些基于信息抽取等技术抽取简单关联关系的知识获取应用系统存在明显的局限性,本文引入Apache Stanbol——Apache下的一种从非结构化信息中自动获取知识的开源项目,它是一个为语义内容管理设计的模块化的软件集和可重用组件,旨在将传统内容管理系统（CMS）拓展为支持语义服务的语义内容管理系统（SCMS）,在此基础上,为改善搜索引擎关于内容的搜索、分类,实体消歧及语义化查询等带来帮助。 相似文献
18.
统一检索技术在dILAS平台中的实现与应用 总被引：2，自引：0，他引：2
异构数字资源服务是当前数字图书馆工作中一个重要的课题,如何建立数字资源统一检索平台,为读者提供简捷、高效的检索服务显然是重中之重。文章试图从应用实际需求出发,通过记录多种成功技术实践,在分析比较目前几种流行的统一检索平台技术的基础上,以国家重点数字图书馆科研项目“dILAS”在深圳图书馆业务及粤港澳书目互查等技术实现为例,详述其统一检索平台的实现机制、关键技术和实现过程,更以相当篇幅介绍了平台的构成、特点和具体技术实现方法。 相似文献
19.
This one-year project was designed to investigate the skills training needs of a group of 12 specialist registrars in psychiatry working as flexible trainees (part time) in the NHS. They had expressed concerns about their lack of information technology skills at training assessment seminars. A part-time project officer, was appointed to support the group giving information skills training to each flexible trainee on an individual basis, through a series of home visits. The project officer worked under the supervision of the London Library & Information Development Unit (LLIDU) from a home base, to identify with the insular feelings expressed by the project group. Project funding purchased a laptop computer with modem and a printer for each participant to use during the project. The training covered: basic search skills and developing search strategy techniques using quality filters particularly in relation to the MEDLINE database; how to search the Cochrane Library and PubMed and exploiting Internet information resources. The group asked for help with word processing and presentation software use. These needs were met in a series of half-day workshops. Experience and insight gained during the project will feed into future planning of information skills training for larger numbers of flexible trainees. 相似文献
20.
作为美国国家科学数字图书馆（NSDL）的项目之一,健康教育资源图书馆（Health Education Assets Library,HEAL）是一个专门为健康教育工作者提供集图片、视频、音频、功画等多媒体资源为一体的高质量的、免费的数字图书馆。文章从整体上对HEAL进行了介绍和评析,包括概述、数字资源及组织、技术特征、服务特点以及作者的评价和建议。 相似文献