Absolute Value in optimization expression
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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
回答（2 个）
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
2019-2-1
编辑：Sean de Wolski
2019-2-1
Square it instead so as to not introduce a discontinuity
(expr).^2
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2019-2-1
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