摘要
讨论了具有就绪时间与先后约束的工件可拒绝排序,其目标函数是所拒绝加工工件的总拒绝费用与加工工件的带权总完工时间之和。应用线性规划松弛方法设计了近似算法,得到(3+√3)-近似算法。
A scheduling problem with rejection subject to release times and precedence constraints is researched. The objective function is rejection costs plus weighted total completion times. Applying linear programming relaxation, a(3 +√3) -approximation algorithm is obtained.
出处
《上海第二工业大学学报》
2009年第1期1-5,共5页
Journal of Shanghai Polytechnic University
基金
上海市教委项目(No.07zz178)
上海市教委科研创新项目(No.08zy78)
关键词
排序
工件可拒绝
线性规划松弛
scheduling
rejection
linear programming relaxation