如何在CPLEX中运行功能? [英] How can I do functions in CPLEX?

问题描述

我正在尝试查找有关带有功能的CPLEX的小型示例.错误的示例此处怎么不做.如何在CPLEX中定义功能?

I am trying to find small-working-example about CPLEX with functions. Bad example here how not do things. How are functions defined in CPLEX?

P.s.我正在为线性优化课程2.3140做过提交的工作，此处 ，在阿尔托大学.

P.s. I am doing already submitted work for the linear-optimization -course 2.3140 here, in Aalto University.

推荐答案

您将其编写为数学问题，但索引越界出错.

You write it like a mathematical problem, you had an error with index-out-of-bound.

// Decision variables
 dvar float+ z[0..4];
 dvar float a[0..4];
 dvar float+ x[0..5];
 dvar float+ v[0..5];


minimize sum(myZ in 0..4) z[myZ]; 

 subject to {

   startX: x[0]==0;
   startV: v[0]==0;
   endX: x[4]==1;
   x[5]==1;
   endV: v[4]==0;
   v[5]==0;


   forall(t in 0..4){
    a[t]<=z[t];
    -a[t]<=z[t];
    x[t+1]==x[t]+v[t];
    v[t+1]==v[t]+a[t];
   }
 }

这是解决方案:

// solution (optimal) with objective 0.666666666666667
// Quality There are no bound infeasibilities.
// There are no reduced-cost infeasibilities.
// Maximum Ax-b  residual             = 1.11022e-016
// Maximum c-B'pi residual            = 1.11022e-016
// Maximum |x|                        = 1
// Maximum |slack|                    = 0.666667
// Maximum |pi|                       = 1.66667
// Maximum |red-cost|                 = 1
// Condition number of unscaled basis = 2.1e+001
// 

z = [0.33333
         0 0 0.33333 0];
x = [0 0 0.33333 0.66667 1 1];
v = [0 0.33333 0.33333 0.33333 0 0];
a = [0.33333 0 0 -0.33333 0];

相关

1. 此forall语句有什么问题在CPLEX中?

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