The Design And Realization Of The Net Teaching-Evalutaion And OLAP System

This paper introduces the design and realization of the Web teaching-evaluation and OLAP system. Through the concrete applications and practices we have great research and quests .at the same time .The trial of OLAM technigue is finished.In the paper .firstly we carry on the need analysis to the system and elaborate the design about the each function model and data source, then, choose the snowflake model for the multi-dimention data set and use the dual-degree class to store it. Secondly, during the system development some correlation techniques are also involved such as OWC (Office Web Components) used as OLAP front end demonstration tool based on Web which permits users to define the analysis plan freely according to their needs and helps us to realize the load, save and share of defined analysis plans. Click stream analysis technigue which can track and research the whole teaching-evaluation action after building up the data center and so on . In the end we put forward a layer design about the visit to OLAP data pool to guarantee the data analysis by establishing the mapping relation between the users rank and roles.In the realization process of OLAM the pattern is chosen that we carry on the cube calculation first and then do some Data Mining. It means that the customers first do some cube calculation such as drill, slice and so on to decide the scope of Data Mining then carry on the multi-dimention association rules mining . In the paper we introduce the theory and algorithm about the multi-dimention association rules mining in detail, especially we elaborate the mining algorithm based on the multi-dimention frequent item set combining the example. Through the mining of each dimention such as grade course type and so on we lead the correlation into the inferential reasoning of association rules. So it enhances the confidence level of Data Mining results and will have the certain guiding sense to the teaching management of school without doubt.