Research And Design Of Intelligent Retrieval System Of Distance Education Resources

With the explosive development of information techno -logy, Internet as one of the most convenience and helpful medium to get information from has become an important part of people's work, study and daily life. Therefore, Internet searchers which help to find and gather information serve as an essential tool for internet users, and they can also offer searching service by collecting, organizing and disposing information. This article points out the necessity and importance of researching and designing the system of intelligent search in distant education resource (SISDER) by analyzing searchers' characteristics and present status both domestic and aboard.This thesis introduces SISDER's model research and designing process as well as its work principle. SISDER is made up of modules such as distributed parallel PhpDig, data encapsulated machine,information source data base and so on, supporting information searching based on XML encapsulation. SISDER is an adjustable Internet intelligent searcher in Chinese facing distance education. It uses three layers of systematic structural project design.The server is used to bear the searching task manager, while the midst to bear the intelligent work task and client. Using C/M/S pattern can lighten the load of both the client and the server to improve the service quality and efficiency, and develop the searching function by handling the semantic meaning of searching object. This thesis also introduces the information handling model of SISDER searching system, and shows the process of the encapsulation of data information and the multithread PHP program of PHPDIG, which is distributed parallel searching system, and is decisive in the data source and information renewal in time of SISDER.