Submitted on: 20 July 2014.
Revised on: 23 October 2014.
Accepted on: 10 November 2014.
___________________DATA & KNOWLEDGE ENGINEERING---ELSEVIER
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Submitted on: 06 July 2019.
Revised on: 15 September 2019.
Accepted on: 13 November 2019.
___________________DATA & KNOWLEDGE ENGINEERING---ELSEVIER
Submitted on: 27 October 2008.
Revised on: 06 December 2008.
Accepted on: 21 December 2008.
___________________DATA & KNOWLEDGE ENGINEERING---ELSEVIER
Submitted on: 23 March 2002.
Revised on: 22 May 2002.
Accepted on: 14 June 2002.
___________________DATA & KNOWLEDGE ENGINEERING---ELSEVIER
Submitted on: 18 September 2012.
Revised on: 10 November 2012.
Accepted on: 15 December 2012.
___________________DATA & KNOWLEDGE ENGINEERING---ELSEVIER
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http://reply.papertrans.cn/1/72/7194/7194-18.png
Submitted on: 18 June 2017.
Revised on: 08 October 2017.
Accepted on: 22 October 2017.
___________________DATA & KNOWLEDGE ENGINEERING---ELSEVIER
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