异构数据库的联合检索

介绍了汕头大学的电子图书联合检索系统,该系统基于Web Service技术。首先用XML定叉统一的元数据标准,然后为每个局部数据库建立Web Service搜索代理,接下来通过联合搜索引擎实现用户一次输入,全局检索。     

基于Web Service的音乐作品版权登记系统

Web Service技术是面向服务架构以及实现信息系统集成的重要技术。它采用HTTP协议,通过Web接收和响应外部系统的请求信息,实现远程调用。Web Service技术以其跨平台性在Web应用程序开发中得到了广泛应用。以开发一个基于Web Service的音乐作品版权登记系统为例,介绍了该系统的总体架构,分析了Web Service技术实现的工作原理,并给出了通过Web Service接口提交音乐作品的实现方法。     

基于Web Service的协同办公系统体系结构与实现的探究

介绍了协同办公系统、基于Web协同办公的优点,阐述了Web Service技术及其体系结构、Web Service下各对象完成的主体工作及相互间的关联、Web Service下协同办公的功能构成、Web Service下协同办公的实现、协同办公安全完善机制等.     

Web元搜索引擎的改进

文中通过简单介绍当前Web搜索引擎的工作机制及其特点，总结了其存在的缺陷，并提出一种新的Web元搜索引擎的体系结构。这种体系结构使用Multi-agents来处理Web信息检索，比常规的元搜索引擎更具个性化和高质量的检索结果。     

基于WebService的资源库工作流系统

工作流管理和Web Service都是新兴的技术,本文结合资源库工作流系统的开发,简要介绍了Web Service及其核心技术——Web服务流语言(WSFL),在此基础上提出了一个工作流过程元模型,该模型由流程、活动、活动依赖三部分组成,重点介绍了流程建模的情况.     

Web Service技术在异构系统集成中的应用——以酒店计费系统应用为例

介绍了Web Service技术,探讨了如何利用Web Service技术实现异构系统集成,并详细介绍了Web Service技术在酒店宽带计费系统中的应用实例。     

基于元搜索引擎的个性化Web信息采集

为了减少传统Web采集系统网络资源的耗费,并增强其个性化支持,结合用户兴趣向量模型,将元搜索引擎技术应用到Web信息采集领域中,设计一个基于元搜索引擎的个性化Web信息采集系统.该系统通过调用成员搜索引擎发现与用户兴趣相关的目标Web站点,通过爬虫程序采集目标站点上的Web页面内容.在发现兴趣站点方面更具有针对性,能有效减少爬虫的数量.重点研究了系统的体系结构、个性化Web采集的工作流程,最后给出了该系统的应用场合.     

基于Web Service的气象服务系统的研究

从分析当前气象服务存在的问题着手,介绍了Web Service的相关技术,分析了Web Service应用于气象服务系统的优势,提出了基 于Web Service的系统模型,并对一些关健技术进行了探讨。     

Web Service技术研究

Web Service是一种面向服务的分布式计算模式,具有良好的、真正意义上的系统平台异构性和语言的独立性。本文首先介绍了Web Service的基本概念和特点。阐述了Web Service的核心技术：SOAP,WSDL,UDDI。最后分析了Web Service的安全性.     

基于Web Service的系统集成技术在校园一卡通中的应用研究

Web Service是Internet上新兴的应用通信和集成技术,本文先简单介绍了XML和Web Service技术,接着讨论了基于Web Service的系统集成技术的特点和优势,最后着重讨论用Web Service技术来对校园一卡通中集成第三方系统的研究。     

Context and page analysis for improved Web search

NECI Research Institute has developed a metasearch engine that improves the efficiency of Web searches by downloading and analyzing each document and then displaying results that show the query terms in concert. The paper discusses the features of the NECI metasearch engine     

Response-time analysis of composite Web services

Web services let programs submit requests to other programs over the Internet via open protocols and standards. Many traditional Web sites, including popular search engines like Google and large online bookstores are boosting their traffic through Web service APIs. A single Internet application can invoke many different Web services - for example, the metasearch engine WebSifter uses several online ontologies to refine a user's request into a more meaningful query and then submits that query to various search engines in parallel. We call such applications composite Web services. Many important challenges stem from the quality-of-service issues in composite Web services. We address the impact of slow services on the overall response time of a transaction that uses several Web services in parallel.     

基于Ontology的元搜索引擎设计

由于Web资源的急剧增长,网络信息的查找变得越来越重要,搜索引擎是当今主要的搜索工具.为提高查找的查全率和查准率,本文提出了一种基于本体的元搜索引擎的系统模型,并描述了运用Notation3建立本体的方法.     

LESSON: A system for lecture notes searching and sharing over Internet

In this paper, we present a system LESSON for lecture notes searching and sharing, which is dedicated to both instructors and students for effectively supporting their Web-based teaching and learning activities. The LESSON system employs a metasearch engine for lecture notes searching from Web and a peer-to-peer (P2P) overlay network for lecture notes sharing among the users. A metasearch engine provides an unified access to multiple existing component search engines and has better performance than general-purpose search engines. With the help of a P2P overlay network, all computers used by instructors and students can be connected into a virtual society over the Internet and communicate directly with each other for lecture notes sharing, without any centralized server and manipulation. In order to merge results from multiple component search engines into a single ranked list, we design the RSF strategy that takes rank, similarity and features of lecture notes into account. To implement query routing decision for effectively supporting lecture notes sharing, we propose a novel query routing mechanism. Experimental results indicate that the LESSON system has better performance in lecture notes searching from Web than some popular general-purpose search engines and some existing metasearch schemes; while processing queries within the system, it outperforms some typical routing methods. Concretely, it can achieve relatively high query hit rate with low bandwidth consumption in different types of network topologies.     

集成搜索引擎的文本数据库选择

用户需要检索的信息往往分散存储在多个搜索多个搜索引擎各自的数据库里,对普通用户而言,访问多个搜索引擎并从返回的结果中分辨出确实有网页是一件费时费力的工作,集成搜索引擎则可以提供给用户一个同时记问多个搜索引擎人集成环境,集成搜索引擎能将其接收到的用户查询提交给底层的多个搜索引擎进行搜索,作为一种搜索工具,集成搜索引擎具有如WEB查询覆盖面比传统引擎更大,引警有更好的可扩展性等优点,讨论了解决集成搜索引擎的数据库选择问题的多种技术,针对用户提交的查询要求,通过数据库选择可以选定最有可能返回有用信息的底层搜索引擎。     

Internet上有关元搜索引擎的研究与设计

概述了Internet上一种新形式——元搜索引擎的概念、构成及分类,对元搜索引擎和一般的搜索引擎进行了比较,联系当前国内外元搜索引擎的现状,分析了其意义,提出了基于Agent的元搜索引擎的设计方案,指出了有自己独特的检索方式和处理方式,突破了传统搜索的局限性,并且该形式尚有许多重要问题亟待解决。     

SRU,Open Data and the Future of Metasearch

ABSTRACT

Search/Retrieve via URL (SRU)isaREST-ful Web service defined by the Library of Congress that supports the standardized, machine-readable transmission of textual queries via HTTP using XML. This article evaluates the suitability of SRU for wide implementation by information providers of all types as a tool to enable effective metasearch services. SRU proves to be an excellent choice for commercial publishers, content aggregators, Internet search engines, and digital library maintainers who wish to make their content available to metasearch tools. This article also presents a hypothetical scenario illustrating how a library could use SRU compliant information resources to implement a metasearch service. doi:10.1300/J136v12n03_09     

搜索引擎技术的新发展—多元搜索引擎系统

在分析传统搜索引擎技术所存在不足的基础上，介绍了搜索引擎发展过程中出现的一种新技术-多元搜索引擎，深入分析了多元搜索引擎系统的组成结构。详细地考察了多元搜索引擎的发展状况，并对多元搜索引擎的系统指标进行了完整的评价。     

Effective rank aggregation for metasearching

Nowadays, mashup services and especially metasearch engines play an increasingly important role on the Web. Most of users use them directly or indirectly to access and aggregate information from more than one data sources. Similarly to the rest of the search systems, the effectiveness of a metasearch engine is mainly determined by the quality of the results it returns in response to user queries. Since these services do not maintain their own document index, they exploit multiple search engines using a rank aggregation method in order to classify the collected results. However, the rank aggregation methods which have been proposed until now, utilize a very limited set of parameters regarding these results, such as the total number of the exploited resources and the rankings they receive from each individual resource. In this paper we present QuadRank, a new rank aggregation method, which takes into consideration additional information regarding the query terms, the collected results and the data correlated to each of these results (title, textual snippet, URL, individual ranking and others). We have implemented and tested QuadRank in a real-world metasearch engine, QuadSearch, a system developed as a testbed for algorithms related to the wide problem of metasearching. The name QuadSearch is related to the current number of the exploited engines (four). We have exhaustively tested QuadRank for both effectiveness and efficiency in the real-world search environment of QuadSearch and also, using a task from the recent TREC-2009 conference. The results we present in our experiments reveal that in most cases QuadRank outperformed all component engines, another metasearch engine (Dogpile) and two successful rank aggregation methods, Borda Count and the Outranking Approach.     

基于Agent的元搜索引擎的研究与设计

论文提出并介绍了一种基于Agent的元搜索引擎系统,旨在帮助Internet用户快速准确地搜索到符合自己需求的Internet信息。该系统采用元搜索引擎的结构,以Agent作为架构系统的基本组件,利用Agent的自治性和协作性来完成用户的个性化Internet信息的搜索。在系统设计中,提出了基于用户喜好的成员搜索引擎的调度策略,能够提高系统的性能和易用性。最后分析了研究该系统的意义及课题尚待解决的问题。