Ontology mapping approach using web search engine

A new mapping approach for automated ontology mapping using web search engines （such as Google） is presented. Based on lexico-syntactic patterns, the hyponymy relationships between ontology concepts can be obtained from the web by search engines and an initial candidate mapping set consisting of ontology concept pairs is generated. According to the concept hierarchies of ontologies, a set of production rules is proposed to delete the concept pairs inconsistent with the ontology semantics from the initial candidate mapping set and add the concept pairs consistent with the ontology semantics to it. Finally, ontology mappings are chosen from the candidate mapping set automatically with a mapping select rule which is based on mutual information. Experimental results show that the F-measure can reach 75% to 100% and it can effectively accomplish the mapping between ontologies.

Weighted PageRank Algorithm Search Engine Ranking Model for Web Pages

As data grows in size,search engines face new challenges in extracting more relevant content for users’searches.As a result,a number of retrieval and ranking algorithms have been employed to ensure that the results are relevant to the user’s requirements.Unfortunately,most existing indexes and ranking algo-rithms crawl documents and web pages based on a limited set of criteria designed to meet user expectations,making it impossible to deliver exceptionally accurate results.As a result,this study investigates and analyses how search engines work,as well as the elements that contribute to higher ranks.This paper addresses the issue of bias by proposing a new ranking algorithm based on the PageRank(PR)algorithm,which is one of the most widely used page ranking algorithms We pro-pose weighted PageRank(WPR)algorithms to test the relationship between these various measures.The Weighted Page Rank(WPR)model was used in three dis-tinct trials to compare the rankings of documents and pages based on one or more user preferences criteria.Thefindings of utilizing the Weighted Page Rank model showed that using multiple criteria to rankfinal pages is better than using only one,and that some criteria had a greater impact on ranking results than others.

Application of a Web Search Engine in Translating Business Terms in English-Chinese Dictionaries

Web search engines are important tools for lexicography.This paper takes translation of business terms("e-commerce"and"e-business")as an example to illustrate the application of web search engines in English-Chinese dictionary translation,including the methods of(1)finding the potential Chinese equivalents of the English business terms,and(2)selecting typical and proper Chinese equivalents in accordance with the frequencies and the meanings of the English business terms respectively.

Website Search Engine Optimization: Geographical and Cultural Point of View

The concept of Webpage visibility is usually linked to search engine optimization (SEO), and it is based on global in-link metric [1]. SEO is the process of designing Webpages to optimize its potential to rank high on search engines, preferably on the first page of the results page. The purpose of this research study is to analyze the influence of local geographical area, in terms of cultural values, and the effect of local society keywords in increasing Website visibility. Websites were analyzed by accessing the source code of their homepages through Google Chrome browser. Statistical analysis methods were selected to assess and analyze the results of the SEO and search engine visibility (SEV). The results obtained suggest that the development of Web indicators to be included should consider a local idea of visibility, and consider a certain geographical context. The geographical region that the researchers are considering in this research is the Hashemite kingdom of Jordan (HKJ). The results obtained also suggest that the use of social culture keywords leads to increase the Website visibility in search engines as well as localizes the search area such as google.jo, which localizes the search for HKJ.

Design and implementation of semantic search engine Smartch

To integrate reasoning and text retrieval, the architecture of a semantic search engine which includes several kinds of queries is proposed, and the semantic search engine Smartch is designed and implemented. Based on a logical reasoning process and a graphic user-defined process, Smartch provides four kinds of search services. They are basic search, concept search, graphic user-defined query and association relationship search. The experimental results show that compared with the traditional search engine, the recall and precision of Smartch are improved. Graphic user-defined queries can accurately locate the information of user needs. Association relationship search can find complicated relationships between concepts. Smartch can perform some intelligent functions based on ontology inference.

Current Application of Search Engines and Their Developing Trend

FAN Xiao-wen School of Pharmacy, Shenyang Pharmaceutical University, Shenyang,110016The basic types of current search engines which can help users to perfume laborious information-gathering tasks on Internet is proposed. Basically, the search engines can be classified into index engine, directory engine and agent engine on WWW information service. The key technologies of web mine, automatic classifying of documents and ordering regulation of feedback information are discussed. Finally, the developing trend of search engines is pointed out by analyzing their practical application on World Wide Web.

基于Web2.0的综合搜索引擎

Web 2.0的出现使网络中的信息量呈井喷局势,给搜索引擎带来了新的挑战,目前的搜索引擎已经不能满足大多数用户的需求。针对这种情况,首先分析了当前搜索引擎的现状和优缺点,其次针对新的情况下的用户需求作出分析,参考和利用了当前Web 2.0的一些先进技术,提出一个基于Web 2.0社区的综合搜索引擎。

基于web 2.0的医药卫生科技查新管理系统优化

引入web 2.0理念和技术,综合应用.net framework 4.0、JQuery框架和Flex富客户端等技术,优化设计完成医药卫生科技查新web服务系统,系统提供在线智能委托、在线签订电子合同、在线支付、在线交流等一体化web服务,满足日益增长的科技查新需求,实现信息资源的共享互动。

基于Elasticsearch的京津冀水环境搜索引擎的设计与实现

针对京津冀水环境信息资源出口不一、范围不同,且不能得到精确检索的问题,本文采用Elasticsearch分布式索引检索技术,将京津冀水环境数据资源进行融合共享,构建了京津冀水环境搜索引擎系统。该系统包括数据采集、数据索引、数据检索、界面展示四个模块。重点对搜索的评分机制做了改进并对检索内容进行重排序。通过实验表明,与通用搜索引擎以及传统数据库相比,所实现的搜索引擎系统可以更加准确、快速地实现用户的检索需求。

WWW上Meta-Search的研究与实现

1 引言 World Wide Web是目前全球最大的信息系统,在WWW上查询Web文档主要依赖于Internet上的索引信息系统,如Yahoo、Infoseek、AltaVista、WebCrawler、Excite、Lycos等等。由于WWW太大又没有良好的结构且Web服务器的自治性,所以Web文档的查询难以做到全面而精确。衡量Web文档查询的质量主要有两个方面:①是否能把所有相关的文档资源找出来,不要有所遗漏。

Web 2.0搜索引擎反作弊技术研究

概述Web 2.0的基本含义和主要特征,并分析在Web 2.0下常见的网页作弊方法,博客作弊、点评作弊、微博作弊和SNS作弊等,提出反作弊的3种模型——信任传播模型、不信任传播模型和异常发现模型。最后提出一个基于人工手段和技术手段相结合的综合搜索引擎反作弊框架系统。

基于图匹配的Web实体抽取算法研究

现今Web中存在大量缺失、不一致及不精确的数据,而传统的搜索引擎只能根据关键词返回文档片段,无法直接获取目标实体。提出一种新的基于图匹配的实体抽取算法GMEE(Graph Matching Based Entity Extraction),首先将片段按词语分割,进行实体的初步筛选;然后根据各实体之间的结构和语义关系建立“加权语义实体关联图”;最后利用“最大公共子图匹配”策略抽取目标实体。实验结果表明,提出的算法在不需要大量参数训练及传递的情况下,能够对抽取的实体集进行有效的精简,既保证了召回率、准确率,又提高了抽取过程的可解释性。

Web信息检索研究进展

Web上大量、分布、动态的信息造成了“信息过载”,如何在传统信息检索技术的基础上开展针对 Web的检索工作已经成为一项重要的研究课题 .但是 ,繁多的 Web信息检索系统和各种模糊的概念给用户的选择和研究人员的讨论带来了不便 .同时 ,有关 Web信息检索最新技术的比较完整的分析又十分缺乏 .在此 ,对 Web信息检索技术进行了综述 ,从 Web信息检索系统的层次化分类 (搜索引擎与目录、元搜索引擎、信息检索 agent)、一般机制和关键新技术 (基于超链的相关度排序、检索结果的联机聚类、基于概念的检索、相关度反馈 )等方面加以阐述 。

基于Web挖掘的智能门户搜索引擎的研究

搜索引擎是人们在Internet上快速获得信息的重要工具之一,但是由于中文自身的特点,使得检索结果的准确性和相关性不是很高,将Web挖掘技术应用到搜索引擎领域,从而产生智能搜索引擎,将会给用户提供一个高效、准确的Web检索工具。文章首先介绍了搜索引擎的工作原理和相关概念,然后介绍了Web挖掘的定义、分类和应用。最后,详细讨论了Web挖掘技术在智能搜索引擎的重要应用。

Web信息采集研究进展

As a basic component of search engine and a series of other services on Web,Web crawler is playing an important role. Roughly,a Web crawler is a program which automatically traverses the Web by downloading documents and following links from page to page. This article detailedly explains the principles and difficulties on the Web crawler,comprehensively argues several hot directions of Web crawler,and at last views the new direction of Web crawler.

基于元数据与Z39.50的分布协作式Web信息检索

Web上大量的异质、分布、动态的信息造成了“信息过载”.如何有效地为用户提供 Web信息检索已经成为一项重要的研究课题 .Web搜索引擎部分地解决了信息检索问题 ,然而其效果却远远不能令人满意 .提出了 Web信息检索的分布协作策略以取代传统的集中式信息检索方式 ;给出了一种新的 Web信息检索系统模型 ,该模型支持对 Web文档的元数据进行检索 ,并采用 Z39.50协议作为接口标准 ,以克服不同信息检索系统之间的访问异构性 .在此基础上 ,设计了一个分布协作式 Web信息检索框架 ,用以帮助用户有效地进行 Web信息检索 .

一种通用Web信息采集系统的设计与实现

介绍了一种通用的Web信息采集系统,给出了系统总体结构,分析了信息采集器、采集控制服务器和信息发布服务器,讨论了系统实际的应用。实践证明,该系统能够对Internet信息进行自动采集,并对今后的应用提供充分的支持,具有良好的通用性。

广域网分布式Web爬虫

分析了广域网分布式Web爬虫相对于局域网爬虫的诸多优势,提出了广域网分布式Web爬虫的3个核心问题:Web划分、Agent协同和Agent部署.围绕这3个问题,对目前学术界和商业界出现的多种实现方案和策略进行了全面的综述,深入讨论了研究中遇到的问题与挑战,并论述了广域网分布式Web爬虫的评价模型.最后,对未来的研究方向进行了总结.

基于Web的生物医学文献资源保障系统的研究与实现

目的 建立基于Web的生物医学文献资源保障系统并对其进行分析、评价。方法 将目前所能获取到的各种来源的医学全文电子期刊纳入系统中 ,在对各种途径进行分析后 ,将全文期刊按学科进行分类并给予各种特征性标识 ,采用TRS信息发布平台在Solaris操作系统下 ,利用JSP技术、Javascript技术、数据库技术建立生物医学文献资源保障系统。对本校医学专业各学科发放调查表 ,对反馈结果进行处理分析 ,评价利用不同途径获取的医学全文电子期刊对用户需求的满足情况。结果 在本系统中实现对TRS数据库的全文期刊刊名按各种方式进行检索。利用生物医学文献资源保障系统对用户需求的总体满足率为 78.5 3% ,其中纯电子期刊对用户需求满足率为 5 9.2 0 %。结论 生物医学文献资源保障系统结合多种获取论文全文的途径 ,将各种类型网络全文期刊集中在一起 。