Submitted on: 16 May 2004.
Revised on: 10 June 2004.
Accepted on: 17 June 2004.
Web Intelligence---IOS PRESS
http://reply.papertrans.cn/4/307/30609/30609-32.png
Submitted on: 18 March 2005.
Revised on: 29 April 2005.
Accepted on: 26 May 2005.
NULL
Submitted on: 14 September 2002.
Revised on: 06 October 2002.
Accepted on: 17 October 2002.
Web Intelligence---IOS PRESS
http://reply.papertrans.cn/4/307/30609/30609-35.png
http://reply.papertrans.cn/4/307/30609/30609-36.png