... Web-Based Learning, Web Contents Extracting, Web Mining. 1 Introduction Web mining has been applied to improve web-based learning. Content-based Web mining usually focuses on main contents of ... method may determine whether a web page contains main contents, and then extracts main contents without using DOM-Tree and template. Main contributions include: (1) Introducing a new concept ... Engineering, South Western University of Finance and Economics, Chengdu, China 610074 2 Computer School, Sichuan University, Chengdu, China 610065 jiangtaoqiu@gmail.com Abstract. Web mining...