http://reply.papertrans.cn/1/72/7193/7193-21.png
Submitted on: 13 December 2009.
Revised on: 11 January 2010.
Accepted on: 25 February 2010.
___________________DATA & KNOWLEDGE ENGINEERING---ELSEVIER
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http://reply.papertrans.cn/1/72/7193/7193-24.png
Submitted on: 08 November 2006.
Revised on: 30 December 2006.
Accepted on: 21 January 2007.
___________________DATA & KNOWLEDGE ENGINEERING---ELSEVIER
http://reply.papertrans.cn/1/72/7193/7193-26.png
http://reply.papertrans.cn/1/72/7193/7193-27.png
Submitted on: 03 July 2013.
Revised on: 30 October 2013.
Accepted on: 21 November 2013.
___________________DATA & KNOWLEDGE ENGINEERING---ELSEVIER
http://reply.papertrans.cn/1/72/7193/7193-29.png
http://reply.papertrans.cn/1/72/7193/7193-30.png