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预知两种信息带准备时间的两台同型机半在线排序
引用本文:李蒙,孙秋媚,封汉颖. 预知两种信息带准备时间的两台同型机半在线排序[J]. 数学的实践与认识, 2011, 41(20)
作者姓名:李蒙  孙秋媚  封汉颖
作者单位:军械工程学院基础部,河北石家庄,050003
摘    要:研究了P2,r_j/decr,opt/Cmax问题,即预知工件大小非增排列decr和最优目标值opt的两台同型机的带准备时间的半在线问题,并给出了竞争比为7/6的半在线算法.

关 键 词:同型机排序  半在线  近似算法  竞争比

A Semi-online Scheduling Problem with Two Types of Information on Two Identical Machines with Non-simultaneous Machine Release Times
LI Meng,SUN Qiu-mei,FENG Han-ying. A Semi-online Scheduling Problem with Two Types of Information on Two Identical Machines with Non-simultaneous Machine Release Times[J]. Mathematics in Practice and Theory, 2011, 41(20)
Authors:LI Meng  SUN Qiu-mei  FENG Han-ying
Affiliation:LI Meng,SUN Qiu-mei,FENG Han-ying (Department of Basic Courses,Ordnance Engineering College,Shijiazhuang 050003,China)
Abstract:This paper considers the problem P2,r_j/ decr,opt/Cmax,i.e.the semi-online problem on two identical machines with non-increasing sizes of all jobs and the optimal objective function value known in advance.A semi-online algorithm with competitive ratio 7/6 is presented.
Keywords:identical machine scheduling  semi-online  approximation algorithm  competitive ratio  
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