Study On Subject Gateways

Since network technology appear, the amount of information had increased sharply, it has been the focus that the discovery of resources on internet. Search engine and internet catalogue has greatly facilitated people's information retrieval and use, but the quality of search result can not be ensure, especially, it can't satisfy the need of scientific researchers and professional for high quality learning information. Subject gateway is one of the efficiency means to solve the above illogicality, it borrows the concept and technology of commerce information gateway, and improve on a series of traditional theory and technology of literature management.Subject gateway deeply organizes the internet information about special subject domain, and effectively solved the outstanding problems about bulk, quality and reliability on internet information resources. It offers the authoritative and credible subject information and service with scientific researchers. Because of the characters of subject gateway preceded to search engine, many new subject gateway come forth continually. Alone with the change of people for need of internet information resource and further demand of integration of information and service, the construction and study on subject gateway certainly will be the important task about internet information organizing and service.This dissertation is about the study on the pivotal problem of subject gateway. Firstly, it detailed describes the definiens and character of subject gateway, based on the description, expounds the predominance and necessity of subject gateway.