论搜索引擎的工作机制和发展趋势   总被引：2，自引：1，他引：2  

李伟超  王兰敬 《现代情报》2002,22(12):107-108

本文简单介绍了搜索引擎的主要功能、工作机制和现状，着重介绍了百度中文搜索引擎，并预测性地提出搜索引擎的未来发展趋势。  相似文献   

Jointly valuing journal visibility and author citation count: An axiomatic approach     

《Journal of Informetrics》2020,14(1):100988

This paper proposes a simple, flexible, axiom-based mechanism for facilitating the comparison between a scholar's citation count and the visibility of the journals wherein the scholar's articles were published. The goal is to help research review bodies easily grasp the distinction these two forms of scholarly accomplishment and to provide a transparent way to articulate expectations about them to scholars. The approach is demonstrated using a widely applied and cooperative functional form that can reflect, via different parameter values, a wide range of possible beliefs about the relative merits of citation counts and journal visibility.  相似文献   

Using a concept mapping strategy to improve the motivation of EFL students in Google Hangouts Peer-Tutoring Sessions with native speakers     

Ting-Chia Hsu 《Interactive Learning Environments》2019,27(2):272-285

This study examines four elements of learner motivation, attention, relevance, confidence, and satisfaction, in an EFL speaking course that uses the computer mediated communication (CMC) tool Google Hangouts. The study found that a preparatory concept mapping task before the CMC sessions improved students’ perceived attention, relevance, confidence, and satisfaction. However, follow-up reflective worksheets had no effect on perceived attention, relevance, confidence, or satisfaction. Instructors should use concept mapping in a pre-task to support learners engaged in CMC-based speaking activities with native and non-native speakers. When the students used concept mapping to prepare for the CMC-based speaking activities, they exhibited higher confidence in their oral practice activities with a native speaker.  相似文献   

“谷歌模式”冲击下的传统出版业创新策略     

范文婷 《合肥教育学院学报》2011,(5):22-26

传统出版业在数字化的过程中,充当着内容提供商的角色,然而＂谷歌模式＂虽然不拥有＂内容＂,但拥有捕捉内容的能力、技术和配套的商业模式,让传统出版业受到了前所未有的冲击。传统出版业必须要在创新中求得发展：从内容提供商转向全方位数字出版服务商,确立内容资源优势,实现产品创新和技术创新;加快推动数字化转型,制订行业统一的技术标准;把握数字出版版权,打造数字出版资源平台,成立第三方监管机构改变利润分配主导权。  相似文献   

Salary Planning     

《图书馆管理杂志》2013,53(3-4):87-97

No abstract available for this article.  相似文献   

Google Answers不能取代图书馆的参考咨询服务     

何燕  瞿其春 《情报资料工作》2007,(4):94-97

文章首先简要介绍了Google Answers的由来及工作模式,随后分析了人们愿意给Google Answers付费的原因,认为图书馆的参考咨询可以从中得出一些启示,并坚持Google Answers不能取代图书馆的参考咨询服务,图书馆参考咨询拥有更美好的明天.  相似文献   

Heeding the Signals: Applying Web best Practices when Google recommends     

Dale Askey 《图书馆管理杂志》2015,55(1):49-59

Google is the single largest driver of traffic to library Web sites and digital repositories, and librarians would do well to listen when the search giant reveals information about its practices or makes recommendations. Recently, Google announced that it would begin to favor Web sites that use the secure hypertext transfer protocol (HTTPS) in its search results rankings. HTTPS encrypts data transmission and one of Google's stated reasons for this change is to help make the Web safer and minimize data theft. Similar announcements by Google have sometimes been ignored by librarians, to the peril of the visibility and use of library products and services on the Web.  相似文献   

中国古代知识分子孤独心态的表达与消解     

王若珺 《天津职业院校联合学报》2011,13(1):78-81

古代中国知识分子被称为士人阶层,这个阶层由于对知识的占有和自身的使命感、责任感使然,常常表现出独特的孤独心态,而对这种心态的表达和消解,士人阶层也有其独特的方式和手段,这个过程同时也具有强烈的中国特色。  相似文献   

浅谈利用Google Earth辅助矿产资源管理     

苏洲 《大众科技》2014,(6):78-80

Google Earth作为免费软件,三维模型上能十分的丰富和强大,但坐标转换导入功能薄弱,ArcGIS 9.2以上版本支持Google Earth数据(KML/KMZ格式)的矢量数据式转换。文章介绍了一种借助ArcGIS软件实现坐标拐点快速转换并投放到Google Earth地图中的方法和途径,同时介绍了利用Google Earth辅助矿产资源管理的方法。  相似文献   

A study of results overlap and uniqueness among major Web search engines     

Amanda Spink  Bernard J. Jansen  Chris Blakely  Sherry Koshman 《Information processing & management》2006

The performance and capabilities of Web search engines is an important and significant area of research. Millions of people world wide use Web search engines very day. This paper reports the results of a major study examining the overlap among results retrieved by multiple Web search engines for a large set of more than 10,000 queries. Previous smaller studies have discussed a lack of overlap in results returned by Web search engines for the same queries. The goal of the current study was to conduct a large-scale study to measure the overlap of search results on the first result page (both non-sponsored and sponsored) across the four most popular Web search engines, at specific points in time using a large number of queries. The Web search engines included in the study were MSN Search, Google, Yahoo! and Ask Jeeves. Our study then compares these results with the first page results retrieved for the same queries by the metasearch engine Dogpile.com. Two sets of randomly selected user-entered queries, one set was 10,316 queries and the other 12,570 queries, from Infospace’s Dogpile.com search engine (the first set was from Dogpile, the second was from across the Infospace Network of search properties were submitted to the four single Web search engines). Findings show that the percent of total results unique to only one of the four Web search engines was 84.9%, shared by two of the three Web search engines was 11.4%, shared by three of the Web search engines was 2.6%, and shared by all four Web search engines was 1.1%. This small degree of overlap shows the significant difference in the way major Web search engines retrieve and rank results in response to given queries. Results point to the value of metasearch engines in Web retrieval to overcome the biases of individual search engines.  相似文献