建立Web信息集成系统

发布时间：2018-10-25 10:07

【摘要】：正 Web是一个巨大的信息库,它由成百万个异构的Web信息源组成,宏观上如同一个庞大的联邦数据库。随着Web规模的日益庞大,要在Web中查找感兴趣的信息变得越来越困难。通常的做法是先用搜索引擎进行关键字匹配查找,然后从搜索引擎返回的网站、网页列表中挑选几个进行访问以获得具体的信息。但是搜索引擎只起到提示引导作用,它所提供的查询功能非常有限。Web上相关信息的分布特性使得用户经常必须访问多个站点才能获得比较全面的信息,不仅费时费力,而且用户往往迷失于Web网页之间错综复杂的连接之中而无法有效地获得准确的信息。 Web信息集成系统通过把相关的Web站点的信息综合起来并提供统一的查询界面,使用户可以直接获得完整的信息却不用关心信息的具体来源和获得方式,使用户获得如同数据库查询一样的服务。 Web信息集成系统具有诱人的应用前景。例如,可以通过集成多家网上商店的商品信息进行网上导购;可以把跟旅游相关的所有站点集成起来实现旅游综合服务,等等。
[Abstract]:Positive Web is a huge information base, which is composed of millions of heterogeneous Web information sources, which is like a huge federated database. With the increasing scale of Web, it becomes more and more difficult to find information of interest in Web. Usually, search engine is used for keyword matching search, and then several pages are selected from the website returned by the search engine to obtain specific information. But the search engine only serves as a cue guide and provides very limited query capabilities. The distribution of related information on the Web makes users often have to visit multiple sites to obtain more comprehensive information, which is not only time-consuming and laborious, Moreover, users are often lost in the intricate connection between Web pages and can not effectively obtain accurate information. The Web information integration system integrates the information of related Web sites and provides a unified query interface, so that users can obtain complete information directly, but do not care about the specific sources and ways of obtaining information. Provides users with the same services as database queries. Web information integration system has an attractive application prospect. For example, online shopping can be conducted by integrating information of goods from multiple online stores; all sites related to tourism can be integrated to achieve integrated tourism services, and so on.
【基金】：航天工业总公司国防预研基金
【分类号】：TP393.09

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