首页> 外文会议>Numerical linear algebra and optimization >A pseudo-feasible point method for linear programming
【24h】

A pseudo-feasible point method for linear programming

机译:线性规划的拟可行点法

获取原文
获取原文并翻译 | 示例

摘要

A pseudo-feasible point method for linear programming is proposed in this paper. The method is different from the well-known simplex method and Karmarkar interior point method for linear programming. A point is called a pseudo-feasible point if certain conditions are satisfied. Let F is contained in R~n be the feasible region of a given linear programming. A set P is contained in R~n is called a pseudo feasible region of the linear programming if F intersect P not = #psi# and optimal solution(s) of the objective function in the set P exists. A pseudo feasible region is called proper if F is contained in P or there exists optimal solution of the linear programming in P. The proposed method generates a sequence of pseudo feasible regions satisfying P_1 contains P_2 contains ... contains P_k contains..., and the sequence of iterative points is formed from the optimal solutions of the objective function in the sets P_k, k=1,2, .... The method determines either that the linear programming has no solution or that the optimal solution of the objective function in some pseudo feasible region is just the optimal solution of the linear programming after finite many iterations. It is proved that if the initial pseudo feasible region is proper, then the method either finds the optimal solution of the linear programming or shows an empty feasible region in finite many iterations. The choice of initial pseudo feasible region, generation of the pseudo feasible region sequence {P_k} and method for finding optimal solution of the objective function in set P_k are presented. Numerical experiments are implemented and the results are compared with the simplex method on some practical linear programming problems. The comparisons show that the pseudo feasible point method is superior to the simplex method and superiority is increased with increased problem dimension.
机译:提出了一种线性规划的拟可行点法。该方法不同于著名的单纯形法和线性规划的Karmarkar内点法。如果满足某些条件,则该点称为伪可行点。令R中包含F是给定线性规划的可行区域。如果F相交P不等于#psi#且集合P中存在目标函数的最优解,则R_n中包含的集合P被称为线性规划的拟可行区域。如果在P中包含F或在P中存在线性规划的最优解,则将伪可行域称为适当区域。提出的方法生成满足P_1包含P_2包含...包含P_k包含...的伪可行区域的序列并由集合P_k,k = 1,2,...中的目标函数的最优解形成迭代点的序列。该方法确定线性规划没有解或目标的最优解伪可行域中的函数只是经过有限多次迭代后线性规划的最优解。证明如果初始伪可行域合适,则该方法要么找到线性规划的最优解,要么在有限的多次迭代中显示出一个空的可行域。介绍了初始伪可行域的选择,伪可行域序列{P_k}的生成以及在集合P_k中寻找目标函数最优解的方法。在一些实际的线性规划问题上进行了数值实验,并将结果与​​单纯形法进行了比较。比较表明,伪可行点法优于单纯形法,并且随着问题规模的增加,其优越性也随之提高。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号