The Research About Knowledge Discovery In Digital Libraries

With the development of the internet and information circumstance, and the increasingly distinctness of the information explosion,the quantity of information is out of proportion to the quality of information, and it becomes a great challenge to digital library. Digital Library is about to be a real knowledge library, and give users deeply knowledge service, and improve the capability about the information and knowledge service, and be succeeded in dealing with the intricate and competitive information circumstance. So, Digital Library should look for a method to discover the ability of new knowledge service. Knowledge Discovery in Database (KDD) can discover the novel and useful knowledge from the backside of a great deal of data. So KDD can help Digital Library discover more useful and inerratic knowledge. And it is an important research for Digital Library's development.The methods such as synthesis, induction and literature search are adopted in this paper, and combines the theory with the reality, discusses how to carry on knowledge discovery in Digital library . And the research aim is seeking a road to construct the better Digital library.Six parts are included in this paper.Part 1 introduces the research background, research status quo, research methods, research goal and innovation of this paper.Part 2 elaborates the correlation theories of Digital library and Knowledge discovery.Part 3 discusses knowledge discovery system's general construction, and how to construct knowledge discovery system in Digital library, and expounds system's function and the duty.Part 4 discusses Digital library's resources type characteristic, and how to practice text mining, multimedia mining, structure mining and user's information mining.Part 5 emphasizes the non-technical factors in the process of knowledge discovery in Digital library, and elaborated research direction.Part 6 summarizes this main research content of this paper, and prospects the research future.The goal of this paper is discussing knowledge discovery in Digital library systematically and generally, and promote the advancement of the knowledge discovery research in Digital library.