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以Google为代表的搜索引擎和以Yahoo!为代表的网站目录是目前互联网用户获取信息的基本方式。本文从互联网的出现及网络信息检索的历史出发，通过对搜索引擎和网站目录在基本设计思想、商业化影响等方面的分析．尝试提出了一种新的网络检索系统的构想。 相似文献
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本文论述了搜索引擎与联机情报检索的发展现状，并从出现背景、检索性能、数据库、查询方式和检索费用等几个方面对二者作了一番比较，从而得出搜索引擎的发展在联机情报检索的基础上发扬优点、克服缺点，联机情报检索的新发展中也借鉴了搜索引擎的优势。二者有各自的用户市场，走着共同发展的道路。 相似文献
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本文论述了搜索引擎与联机情报检索的发展现状，并从出现背景、检索性能、数据库、查询方式和检索费用等几个方面对二者作了一番比较，从而得出搜索引擎的发展在联机情报检索的基础上发扬优点、克服缺点，联机情报检索的新发展中也借鉴了搜索引擎的优势。二者有各自的用户市场，走着共同发展的道路。 相似文献
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中文智能搜索引擎现状探析 总被引：9，自引：0，他引：9
随着Internet的发展，传统的搜索引擎暴露出越来越多的弊病，导致智能搜索引擎的出现。而中文的特性也必然使中文智能搜索引擎具有其独特的一面。本文就传统搜索引擎的缺陷与中文智能搜索引擎现状与功能作了一些探析。 相似文献
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搜索引擎的定性、定量评价研究与合理选择 总被引：2，自引：0，他引：2
目前国外出现了一些专门评价网络信息资源的站点，对于搜索引擎的评价主要体现在对数据库资源的评价和对搜索引擎性能的评价上。本文从搜索引擎评价的必要性、定性评价、定量评价和合理选择等方面进行分析与探讨，希能促进搜索引擎改进和中文搜索引擎的进一步发展。 相似文献
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Google的使用技巧及搜索引擎的发展趋势 总被引：1，自引：0，他引：1
本文介绍了随着计算机网络的出现及不断发展，www搜索引擎的分类及使用技巧，总结了怎样应用搜索引擎全面、准确、快速、有效地搜索到有用的信息，以便更好地为学习、工作服务。 相似文献
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随着科学研究的深入发展,人们对文献需求越来越广泛,对搜索引擎理论的研究正在朝着多元化、专业化方向发展。特别是新型文献载体的出现,开阔了搜索引擎理论研究的新视野。本文从搜索引擎的组成,搜索引擎的分类,如何识别搜索引擎的优劣,搜索引擎的未来发展动向等方面对搜索引擎技术做介绍。 相似文献
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随着互联网上的信息急剧增加,是否能找到信息的问题变成了如何才能找到相关的信息,搜索引擎的出现在一定程度上解决了这一问题。在此文章中我们提出了搜索引擎研究领域涉及的关键技术,概述了搜索引擎的应用,并分析了搜索引擎的未来发展动向。 相似文献
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互联网是一个宝库，搜索引擎是打开宝库的一把钥匙。使用搜索引擎，使我们检索信息的能力获得了空前的提高，成本有效地降低，可以说，搜索引擎是现代的计算机技术、因特网技术与传统的索引理论相结合的成功典范。这里我们所谓的搜索引擎，是指以计算机、网络、大信息量、自动化为特征的新型检索工具，它的祖先是美国蒙特利尔大学的一个小组开发的Archie。1993年问世的ALIWEB则相当于Archie的http版本。1994年春天，世界上出现了真正现代意义上的搜索引擎——Lycos（L是Lycosidae的缩写，意思是善于捕捉猎物的狼蛛）。之后，随着雅虎的出现，搜索引擎的发展也进入了黄金时代。搜索引擎家族不断发展壮大，逐渐分布到信息世界的各个角落，它们的种类、技术也在不断地发生变化，成为仅次于门户的互联网第二大核心技术。 相似文献
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可视化搜索引擎Kartoo 总被引：1，自引：0，他引：1
可视化搜索引擎因其实现了信息的可视化表达、具有传统搜索引擎无法比拟的优势而被称为是下一代搜索引擎。本文以Kartoo为例，介绍了这种可视化搜索引擎的工作原理、检索界面、检索功能、特点及用法。 相似文献
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The Web and especially major Web search engines are essential tools in the quest to locate online information for many people. This paper reports results from research that examines characteristics and changes in Web searching from nine studies of five Web search engines based in the US and Europe. We compare interactions occurring between users and Web search engines from the perspectives of session length, query length, query complexity, and content viewed among the Web search engines. The results of our research shows (1) users are viewing fewer result pages, (2) searchers on US-based Web search engines use more query operators than searchers on European-based search engines, (3) there are statistically significant differences in the use of Boolean operators and result pages viewed, and (4) one cannot necessary apply results from studies of one particular Web search engine to another Web search engine. The wide spread use of Web search engines, employment of simple queries, and decreased viewing of result pages may have resulted from algorithmic enhancements by Web search engine companies. We discuss the implications of the findings for the development of Web search engines and design of online content. 相似文献
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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
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Comparing rankings of search results on the Web 总被引：1，自引：0，他引：1
The Web has become an information source for professional data gathering. Because of the vast amounts of information on almost all topics, one cannot systematically go over the whole set of results, and therefore must rely on the ordering of the results by the search engine. It is well known that search engines on the Web have low overlap in terms of coverage. In this study we measure how similar are the rankings of search engines on the overlapping results.We compare rankings of results for identical queries retrieved from several search engines. The method is based only on the set of URLs that appear in the answer sets of the engines being compared. For comparing the similarity of rankings of two search engines, the Spearman correlation coefficient is computed. When comparing more than two sets Kendall’s W is used. These are well-known measures and the statistical significance of the results can be computed. The methods are demonstrated on a set of 15 queries that were submitted to four large Web search engines. The findings indicate that the large public search engines on the Web employ considerably different ranking algorithms. 相似文献
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[目的/意义]搜索引擎作为互联网的核心技术与应用之一，代表了互联网发展的水平。了解当前搜索引擎的发展情况，有利于更好地把握技术前沿动态。[方法/过程]文章首先阐述搜索引擎的发展历史，然后重点介绍基于结构化数据的搜索引擎的原理、应用场景，揭示这一类搜索引擎的特征。[结果/结论]基于数据的搜索引擎是互联网发展过程中的必然结果，也是互联网发展的一个亮点。搜索引擎会继续将互联网的精英技术和理念收揽其中，在人们的学习、生活中发挥更加突出的作用。 相似文献
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运用文献计量的方法对我国搜索引擎领域的相关文献进行多角度的定量和定性分析,明晰搜索引擎研究领域的主要研究机构、核心作者和核心期刊,并通过论文关键词和主题分析,发现目前的研究热点主要集中于4个方面:(1)搜索引擎的基本原理和关键技术;(2)元、垂直、个性和智能等4种搜索引擎研究;(3)搜索引擎的应用及商业盈利;(4)搜索引擎相关的知识产权等法律问题4个方面。 相似文献
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This paper reports results from a study exploring the multimedia search functionality of Chinese language search engines. Web searching in Chinese (Mandarin) is a growing research area and a technical challenge for popular commercial Web search engines. Few studies have been conducted on Chinese language search engines. We investigate two research questions: which Chinese language search engines provide multimedia searching, and what multimedia search functionalities are available in Chinese language Web search engines. Specifically, we examine each Web search engine’s (1) features permitting Chinese language multimedia searches, (2) extent of search personalization and user control of multimedia search variables, and (3) the relationships between Web search engines and their features in the Chinese context. Key findings show that Chinese language Web search engines offer limited multimedia search functionality, and general search engines provide a wider range of features than specialized multimedia search engines. Study results have implications for Chinese Web users, Website designers and Web search engine developers. 相似文献
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综合搜索引擎与垂直搜索引擎的比较研究 总被引：17，自引：0，他引：17
搜索引擎是目前互联网信息服务的主要工具，它的竞争也日趋激烈，搜索引擎的信息服务也逐渐引起重视。本文从信息服务的角度出发，通过对综合搜索引擎与垂直搜索引擎在信息服务各个要素方面的比较，找出它们之间的竞争与合作的关系，为当前的搜索引擎发展做出初步的分析。 相似文献
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Web search engines are beginning to offer access to multimedia searching, including audio, video and image searching. In this paper we report findings from a study examining the state of multimedia search functionality on major general and specialized Web search engines. We investigated 102 Web search engines to examine: (1) how many Web search engines offer multimedia searching, (2) the type of multimedia search functionality and methods offered, such as “query by example”, and (3) the supports for personalization or customization which are accessible as advanced search. Findings include: (1) few major Web search engines offer multimedia searching and (2) multimedia Web search functionality is generally limited. Our findings show that despite the increasing level of interest in multimedia Web search, those few Web search engines offering multimedia Web search, provide limited multimedia search functionality. Keywords are still the only means of multimedia retrieval, while other methods such as “query by example” are offered by less than 1% of Web search engines examined. 相似文献
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从优秀搜索引擎、搜索引擎网站、搜索引擎论坛、搜索引擎新闻和搜索引擎会议等方面入手,对国外现有论述搜索引擎的主要资源、种类、性能和特色进行了述评.在此基础上,推荐有关搜索引擎的最佳资源,为人们学习掌握搜索引擎的资源、搜索技巧、方法和优化检索策略提供参考资料和学习途径. 相似文献