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《Information processing & management》2005,41(3):691-715
This paper discusses the impact of metadata implementation in a webpage on its visibility performance in a search engine results list. Influential internal and external factors of metadata implementation were identified. How these factors affect webpage visibility in a search engine results list was examined in an experimental study. Findings suggest that metadata is a good mechanism to improve webpage visibility, the metadata subject field plays a more important role than any other metadata field and keywords extracted from the webpage itself, particularly title or full-text, are most effective. To maximize the effects, these keywords should come from both title and full-text. 相似文献
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本文以北京16家区县政府网站为例,对政府网站的搜索引擎优化状况从网站内容优化、网站结构优化和搜索引擎可见性三方面进行了实证分析。其中网站内容优化评价指标包括网站首页标题、关键词及描述设置情况,网站结构优化评价指标包括网站层次结构、链接情况和网站导航,而搜索引擎可见性的评价指标主要是网页收录数量。分析结果表明,网站优化程度与搜索引擎可见性呈现出一定的相关性、政府网站对内容未做优化、政府网站结构优化在细节方面还不够、政府网站对搜索引擎优化重视程度不够。 相似文献
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搜索引擎检索结果的网页组织技术及其优化策略 总被引：2，自引：0，他引：2
本文分析了搜索引擎检索结果的组织技术及其存在的不足，并对检索结果的组织技术进行了优化处理，最后分析了搜索引擎检索结果中提高网页排名的优化策略。 相似文献
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Webpages are mainly distinguished by their topic (e.g., politics, sports etc.) and genre (e.g., blogs, homepages, e-shops, etc.). Automatic detection of webpage genre could considerably enhance the ability of modern search engines to focus on the requirements of the user’s information need. In this paper, we present an approach to webpage genre detection based on a fully-automated extraction of the feature set that represents the style of webpages. The features we propose (character n-grams of variable length and HTML tags) are language-independent and easily-extracted while they can be adapted to the properties of the still evolving web genres and the noisy environment of the web. Experiments based on two publicly-available corpora show that the performance of the proposed approach is superior in comparison to previously reported results. It is also shown that character n-grams are better features than words when the dimensionality increases while the binary representation is more effective than the term-frequency representation for both feature types. Moreover, we perform a series of cross-check experiments (e.g., training using a genre palette and testing using a different genre palette as well as using the features extracted from one corpus to discriminate the genres of the other corpus) to illustrate the robustness of our approach and its ability to capture the general stylistic properties of genre categories even when the feature set is not optimized for the given corpus. 相似文献
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分析了搜索引擎的算法和排名原理,对网站结构、关键字、单页的优化,搜索引擎的惩罚、被搜索引擎惩罚后的挽救办法等技术进行了论述。 相似文献
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Web搜索引擎与全文检索技术 总被引：6，自引：0，他引：6
本文主要阐述了全文检索技术在Web搜索引擎中的应用。对国内Web搜索引擎的全文检索技术中的不足进行了分析和思考并提出解决办法，同时对web搜索引擎中的全文检索技术的发展提出了自己的观点。 相似文献
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In sponsored search, many advertisers have not achieved their expected performances while the search engine also has a large room to improve their revenue. Specifically, due to the improper keyword bidding, many advertisers cannot survive the competitive ad auctions to get their desired ad impressions; meanwhile, a significant portion of search queries have no ads displayed in their search result pages, even if many of them have commercial values. We propose recommending a group of relevant yet less-competitive keywords to an advertiser. Hence, the advertiser can get the chance to win some (originally empty) ad slots and accumulate a number of impressions. At the same time, the revenue of the search engine can also be boosted since many empty ad shots are filled. Mathematically, we model the problem as a mixed integer programming problem, which maximizes the advertiser revenue and the relevance of the recommended keywords, while minimizing the keyword competitiveness, subject to the bid and budget constraints. By solving the problem, we can offer an optimal group of keywords and their optimal bid prices to an advertiser. Simulation results have shown the proposed method is highly effective in increasing ad impressions, expected clicks, advertiser revenue, and search engine revenue. 相似文献
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不同搜索引擎在网络影响因子分析中的比较研究 总被引：11，自引：0，他引：11
网络影响因子是网络计量学研究中的一个重要分支，搜索引擎在网络影响因子的研究中起着重要的作用。本文利用三种搜索引擎对中国10所大学的总网络影响因子进行了分析，并对这几种搜索引擎进行了对比性研究。 相似文献
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Recent research in the human computer interaction and information retrieval areas has revealed that search response latency exhibits a clear impact on the user behavior in web search. Such impact is reflected both in users’ subjective perception of the usability of a search engine and in their interaction with the search engine in terms of the number of search results they engage with. However, a similar impact analysis has been missing so far in the context of sponsored search. Since the predominant business model for commercial search engines is advertising via sponsored search results (i.e., search advertisements), understanding how response latency influences the user interaction with the advertisements displayed on the search engine result pages is crucial to increase the revenue of a commercial search engine. To this end, we conduct a large-scale analysis using query logs obtained from a commercial web search. We analyze the short-term and long-term impact of search response latency on the querying and clicking behaviors of users using desktop and mobile devices to access the search engine, as well as the corresponding impact on the revenue of the search engine. This analysis demonstrates the importance of serving sponsored search results with low latency and provides insight into the ad serving policy of commercial search engines to ensure long-term user engagement and search revenue. 相似文献
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【目的/意义】我国“互联网+政务服务”发展迅速,在线政务服务资源日益丰富,民众能否通过搜索引擎查
找到政务服务是影响在线政务服务平台成效的重要因素。政务服务资源搜索的主要目标是“查准”,研究提出关于
中美政务服务资源搜索引擎可见性的八个假设。【方法/过程】按照查找典型政务服务个人事项“申领机动车驾驶
证”和法人事项“注册有限责任公司”的需求构造中英文关键词,分别通过百度和谷歌,以定位到中国各省和美国各
州经济最发达城市为目标进行搜索实验,采集首页搜索结果并进行相关性评分。在此基础上进行搜索引擎搜索功
能的统计分析,用非参数检验验证假设。【结果/结论】研究认为搜索引擎理解政务服务词汇的能力直接影响了其搜
索水平,政务服务平台也可以通过搜索引擎优化提升可见性。【创新/局限】研究创新在于构建中英文关键词,直接
采集百度和谷歌的搜索结果进行跨国比较研究,突破了以往同类研究的宽度和深度;局限主要在于相关性判断存
在主观性和搜索对象的规模较小。 相似文献
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在网络教学平台加入定制的Lucene全文搜索引擎,实现了针对各种类型教育资源的全文索引/检索功能。通过在网络教学平台上的应用测试,证明了在网络教学平台上构建一个全文检索引擎是成功的,可以对网络教学平台站内网页中各种教学资源进行全文检索。 相似文献
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关键词检索特性的计量学分析 总被引：1，自引：0，他引：1
利用文献计量学方法,对关键词检索文献出现的数量上特征,通过列表进行分析,得出关键词检索具有专指性、结合性与层次性以及层次性分离的特性,形成对关键词检索的认识,对标引与检索文献以及日后的研究具有积极意义。 相似文献
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自动问答系统在搜索引擎的基础上融入了自然语言的知识与应用,与传统的依靠关键字匹配的搜索引擎相比,能够更好地满足用户的检索需求。介绍了计算机操作系统自动问答系统模型,阐述了具体开发过程,设计并实现了基于计算机操作系统领域的自动问答系统,实践表明该系统能够较为准确地回答用户问题。 相似文献
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The purpose of this study is to provide automatic new topic identification of search engine query logs, and estimate the effect of statistical characteristics of search engine queries on new topic identification. By applying multiple linear regression and multi-factor ANOVA on a sample data log from the Excite search engine, we demonstrated that the statistical characteristics of Web search queries, such as time interval, search pattern and position of a query in a user session, are effective on shifting to a new topic. Multiple linear regression is also a successful tool for estimating topic shifts and continuations. The findings of this study provide statistical proof for the relationship between the non-semantic characteristics of Web search queries and the occurrence of topic shifts and continuations. 相似文献
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This paper presents a new approach to query expansion in search engines through the use of general non-topical terms (NTTs) and domain-specific semi-topical terms (STTs). NTTs and STTs can be used in conjunction with topical terms (TTs) to improve precision in retrieval results. In Phase I, 20 topical queries in two domains (Health and the Social Sciences) were carried out in Google and from the results of the queries, 800 pages were textually analysed. Of 1442 NTTs and STTs identified, 15% were shared between the two domains; 62% were NTTs and 38% were STTs; and approximately 64% occurred before while 36% occurred after their respective topical terms (TTs). Findings of Phase II showed that query expansion through NTTs (or STTs) particularly in the ‘exact title’ and URL search options resulted in more precise and manageable results. Statistically significant differences were found between Health and the Social Sciences vis-à-vis keyword and ‘exact phrase’ search results; however there were no significant differences in exact title and URL search results. The ratio of exact phrase, exact title, and URL search result frequencies to keyword search result frequencies also showed statistically significant differences between the two domains. Our findings suggest that web searching could be greatly enhanced combining NTTs (and STTs) with TTs in an initial query. Additionally, search results would improve if queries are restricted to the exact title or URL search options. Finally, we suggest the development and implementation of knowledge-based lists of NTTs (and STTs) by both general and specialized search engines to aid query expansion. 相似文献
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根据检察信息网站的特点,文章分析了网页配色对网站建设的作用,研究了网页设计中色彩搭配的方法,总结归纳了网页配色的一般原则和技巧,阐明了色彩搭配对于网页设计中的重要性,为实施检察信息网站建设中的网页设计工作提供了理论依据。 相似文献
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基于关键词效能的搜索引擎优化策略分析 总被引：1，自引：0，他引：1
介绍基于用户需求分析的搜索引擎优化策略,结合某网站的优化研究实例,提出建立在关键词效能算法、网站结构优化基础上的网站推广可行性方案。研究结果表明,这些优化策略有助于提高搜索引擎页面收录量和在搜索引擎的自然排名,从而获得更高的访问量。所讨论的内容适合中小企业电子商务网站的中长期优化和推广。 相似文献
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利用Lucene的全文索引和搜索技术,开发了与ILAS III集成的全文搜索型OPAC系统Bookle。介绍了Bookle的体系结构以及参数管理器、索引器、搜索器、用户接口等的设计与实现。Bookle系统实现了扩展书目信息的自动抓取并使之本地化,扩展了书目检索点,为读者提供了书目记录及其扩展书目信息的任意词全文搜索等服务,弥补了ILAS III OPAC的不足。 相似文献