Absolute Value in optimization expression

7 次查看（过去 30 天）
Vinayak Suresh
Vinayak Suresh 2019-2-1
编辑： Torsten 2019-2-4
How can I add an absolute value to an optimization expression I am trying to optimize? MATLAB shows the following error :
Undefined function 'abs' for input arguments of type 'optim.problemdef.OptimizationExpression'.
problem is :
minimize abs ( ax + by + cz - d )
subject to , x,y,z are integers in some range

请先登录，再回答此问题。

回答（2 个）

Torsten
Torsten 2019-2-4
编辑：Torsten 2019-2-4
min: eps
+ (a*x + b*y + c*z - d) - eps <= 0
- (a*x + b*y + c*z - d) - eps <= 0
subject to x,y,z are integers in some range with a new variable "eps".
Sean de Wolski
Sean de Wolski 2019-2-1
编辑：Sean de Wolski 2019-2-1
Square it instead so as to not introduce a discontinuity
(expr).^2

类别

在 Help Center 和 File Exchange 中查找有关 Problem-Based Optimization Setup 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by