共查询到20条相似文献，搜索用时 156 毫秒
1.
新一代中文Coogle学术搜索技术与传统的中文Google网页搜索功能相比在搜索技术方面具有新的突破。本文在比较二者特点的基础上阐述了中文Google学术搜索网站特点及其在外文信息检索中的应用．并结合中文Coogle学术搜索技术的特点对其应用发展进行了展望。 相似文献
2.
《现代图书情报技术》2006,(7)
动态Google发布图书搜索中国合作项目Google公司在中国正式推出Google图书搜索中国合作伙伴项目,清华大学出版社和少年儿童出版社成为Google图书搜索的首批中国合作伙伴。据悉,Google图书搜索合作伙伴项目是一项免费计划,它向出版社、出版机构及个人版权作者开放。Google图书搜索项目产品经理陈宇华表示,Google将通和个人版权作者因时间、地域区隔影响力受限的困惑。目前该平台主要还是以英文为主。Google全球副总裁兼大中华区联合总裁李开复表示,Google还将发布Google图书搜索中文界面。另外,“整个合作过程,出版社的知识产权将受到Go… 相似文献
3.
Google、Yahoo、百度是用户搜索信息时常用的三个搜索引擎,它们都为用户提供全面的搜索功能。针对Google、Yahoo、百度的中文图像搜索功能进行分析比较。从搜索的响应时间、检索出图像的数量、准确性、检索结果的排序等方面进行了对比分析,并对图像搜索的工作原理进行了简单介绍。 相似文献
4.
5.
Google的成功对网络信息界的启示 总被引：2，自引：0，他引：2
<正> Google在赢利及品牌效应上均获巨大成功 目前,全世界访问量最大的4个网站中,3家采用了Google的搜索技术,80％的互联网搜索是通过Google或使用Google技术的网站完成的。目前Google每个月接待来自世界各地的超过2800万独立访问者,全球网民通过Google可以使用86种语言,搜索30多亿个网页及其网页快照,以及4亿多张图片,每个月Google 相似文献
6.
Google学术搜索及其在课题检索中的应用 总被引：1，自引：0，他引：1
饶安平 《图书馆工作与研究》2010,(8)
Google学术搜索为用户提供了一个免费、自由、简便的检索平台,在检索专业文献方面具有独特的优势.本文结合实际课题阐述了Google学术搜索在信息检索中的应用. 相似文献
7.
Google搜索引擎技术实现探究 总被引：4，自引：0，他引：4
化柏林 《现代图书情报技术》2004,(Z1)
从技术的角度剖析了 Google搜索引擎的体系结构与工作过程 ,详细介绍了基于 Robot的网页搜索、标引入库和检索引擎三大模块 ,统计了 Google的技术数据 ,并分析了 Google的技术实现特点 ,解释了 Google检索的种种现象。 相似文献
8.
Google应用技巧 总被引：5，自引：0，他引：5
常春 《现代图书情报技术》2004,20(6):53-55
文章详细分析了网络搜索引擎Google 的功能特征, 讨论了在使用中存在的一些现象和问题。通过具体例证说明: 在进行组合查询时, 要对所有的查询词分别加引号; Google 在对中文繁简字体语义转换时, 有可能出现明显的错误; 搜索到的数据在同一范围内、在以小时为单位内也会出现巨大的变化; 以及在不同范围内, 搜索同一信息时, 随时间的不同, 搜索到的结果会有不同的排序。 相似文献
9.
中文搜索引擎核心技术之争 总被引：10，自引：2，他引：8
本文介绍了搜索引擎的工作原理和中文搜索引擎的现状，特别分析了目前两大中文搜索引擎Google和百度的核心技术，并通过具体的搜索实例来对比两大搜索引擎的特色，最后还介绍了中文搜索引擎未来的发展方向。 相似文献
10.
11.
论述传统的联机信息检索和基于Internet的网络信息检索的异同,分析比较联机检索和网络检索的优缺点,并指出它们今后的发展方向。 相似文献
12.
Lexis.com和Westlaw International是美国两个著名的法律数据库,其文献收录覆盖范围广、文献类型多样、检索技术复杂,从内容到功能上十分类似。对两者收录内容、检索方式、检索技术、检索功能等进行比较和分析,可使用户对其结构和检索技巧有更深刻的了解,方便学习者和研究者有效利用这两大法律数据库。 相似文献
13.
Lexis.com和Westlaw International是美国两个著名的法律数据库,其文献收录覆盖范围广、文献类型多样、检索技术复杂,从内容到功能上十分类似。对两者收录内容、检索方式、检索技术、检索功能等进行比较和分析,可使用户对其结构和检索技巧有更深刻的了解,方便学习者和研究者有效利用这两大法律数据库。 相似文献
14.
Jason Bengtson 《Medical reference services quarterly》2013,32(1):42-49
SciVerse is the new combined portal from Elsevier that services their ScienceDirect collection, SciTopics, and their Scopus database. Using SciVerse to access ScienceDirect is the specific focus of this review. Along with advanced keyword searching and citation searching options, SciVerse also incorporates a very useful image search feature. The aim seems to be not only to create an interface that provides broad functionality on par with other database search tools that many searchers use regularly but also to create an open platform that could be changed to respond effectively to the needs of customers. 相似文献
15.
《图书馆管理杂志》2013,53(1-2):135-136
Abstract With the transformation of the card catalog into the online public access catalog came the expectation of its increased functionality. For the most part, today's online catalogs perform an expanded list of tasks quite effectively. Bibliographic utilities, system vendors, and individual libraries continue to improve bibliographic retrieval by providing new and better services through the catalog. In spite of these improvements, many observers believe that online catalogs have reached their maturity. Today's information environment includes a wealth of material to which online catalogs cannot provide universal and up-to-date access. Increasingly, librarians are turning to federated searching portal applications to find a means of managing the flood of digital information that threatens to engulf users. This chapter describes essential functionality of such tools, suggesting directions and strategies for improving them. The author concludes that, while the online catalog will continue to function as the principal tool for access control of the library's physical collections, the federated searching portal will ultimately serve as the library's principal Web gateway to digital resources. 相似文献
16.
Jennifer A. Lyon Rolando Garcia-Milian Hannah F. Norton Michele R. Tennant 《Medical reference services quarterly》2013,32(3):241-252
Expert-mediated literature searching, a keystone service in biomedical librarianship, would benefit significantly from regular methodical review. This article describes the novel use of Research Electronic Data Capture (REDCap) software to create a database of literature searches conducted at a large academic health sciences library. An archive of paper search requests was entered into REDCap, and librarians now prospectively enter records for current searches. Having search data readily available allows librarians to reuse search strategies and track their workload. In aggregate, this data can help guide practice and determine priorities by identifying users’ needs, tracking librarian effort, and focusing librarians’ continuing education. 相似文献
17.
18.
Martin McMahon Chris Hatton Simon Alberici 《Health information and libraries journal》2018,35(3):246-250
This paper outlines the inter‐professional collaboration of the authors, a PhD student, his supervisor and an information professional, to systematically search the literature for an ill‐defined concept. The research question posed for the scoping literature review indicated that the topic, the subjective socio‐economic status and health of adults with intellectual disabilities, was rare. The need for a methodological search process was therefore identified and successfully carried out. The paper presents an analysis of the processes and the collaboration involved in developing a successful search strategy. The resulting transformative learning by the researcher of the professional practice of the information specialist illuminates their facilitating and supportive role in advancing health related research. F.J. 相似文献
19.
分类检索是基于分类思想的一种信息检索模式,先后经历了早期的分类认知模式、传统的分类索引模式、网络分类导航模式、分类主题一体化模式、分类检索2.0模式。分类检索2.0模式将是信息分类检索的发展方向,并随着检索实践的专业化需求进一步走向规范化。 相似文献
20.
Background: Search filters have been developed in MEDLINE and EMBASE to help overcome the challenges of searching electronic databases for information on adverse effects. However, little evaluation of their effectiveness has been carried out. Objectives: To measure the sensitivity and precision of available adverse effects search filters in MEDLINE and EMBASE. Methods: A case study systematic review of fracture related adverse effects associated with the use of thiazolidinediones was used. Twelve MEDLINE search strategies and three EMBASE search strategies were tested. Results: Nineteen relevant references from MEDLINE and 24 from EMBASE were included in the review. Four search filters in MEDLINE achieved high sensitivity (95 or 100%) with an improved level of precision from searches without any adverse effects filter. High precision in MEDLINE could also be achieved (up to 53%) using search filters that rely on Medical Subject Headings. No search filter in EMBASE achieved high precision (all were under 5%) and the highest sensitivity in EMBASE was 83%. Conclusions: Adverse effects search filters appear to be effective in MEDLINE for achieving either high sensitivity or high precision. Search filters in EMBASE, however, do not appear as effective, particularly in improving precision. 相似文献