Taking the influential Korean youth idols as a model, this thesis aims to analysis the fundamental characteristics that exist in types of drama , so as to show the current development of Chinese Youth Idols in the light of success of Korean youth idols which is going to be analysized from four aspects :type of model, type of innovative as well as marketing strategies, cultural strategies .

A category-based clustering algorithm for category expansion was also used in the system to address the problems caused by the conflict between the fixed number of categories and the growing number of documents added to the system.

On extension model of rough set of incomplete information systems under symmetric similarity relation;

In this article,the role of expanding medicine history is demonstrated by a case of advanced breast cancer.