Domain resource integration system

Domain Resource Integrated System (DRIS) is introduced in this paper. DRIS is a hierarchical distributed Internet information retrieval system. This system will solve some bottleneck problems such as long update interval, poor coverage in current web search system. DRIS will build the information retrieval infrastructure of Internet, but not a commercial search engine. The protocol series of DRIS are also detailed in this paper. 1 introduction Now most people obtain information from Internet by search engines, which give us great convenience in our daily life. But for many people, finding the information they really want on the WorldWide Web is still a hit-and-miss affair. We can find some bottleneck problems in current search engines. Because the Internet is a large dynamic system, current search engine can't continue to index close to the entire Web as it grows. The update interval of most pages database is almost one month. Till now, no a search engine can cover more than 50 percentage pages on Internet. These data has no obvious difference with the statistical data in 1998[1]. In fact, the performance in current search engine is even no better than those of six years ago. Web page is only one kind of information resource on Internet. Many video, PDF, picture and many other kinds of information resource also greatly increased in these years. Some search engines like Google also want to add these resources in their system. But only as a web page search engine, it has meet many problems in coverage and recency, etc. If it adds the other kinds of resources, these problems may become more serious. Moreover, there have been hundred of different search engines [2]. Every of them will extract all of the pages from the web servers over and over again, which great increase the traffic load of Internet. Personal information is not considered in current search system. So there are always too many unrelated records in search results. At all, we need a better internet search engine solution. 2 DRIS To solve these problems in current search system, a new system, domain resource integration system (DRIS), is proposed in a digital library project. DRIS was also a selective solution of IETF [3] to build the new internet information retrieval infrastructure. 2.1 Origins of DRIS Firstly, the original idea of DRIS is introduced. Now more and more digital resources were introduced into library. Just in our library, …