Help in defining fmincon fucntion - Optimization Toolbox
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I am unfamiliar with working of MATALAB so I need some basic help in using this function.
I want to make my function zero or near zero (It could be negative value but it should be a value nearest to zero)
The other constrains is the all variables should be in between 0.3 to 0.7. Its values can have up to 10 digits after decimal points e.g 0.54465941365)
Problem Its not giving me a value that could give a near zero value.
Thankyou
Here is my Problem Setup
Objective function: @myfun
Derivatives: Approximated by Solver
Start point:[0;0;0;0;0]
A: Empty b: Empty
Aeq: Empty beq:Empty
Bounds:
Lower: [0.3;0.3;0.3;0.3;0.3]
Upper: [0.7;0.7;0.7;0.7;0.7]
Nonlinear constraint function: Empty
Derivatives: Approximated by solver
Options: Default
Results
Objective function value: -390.45426224401234
Local minimum found that satisfies the constraints.
Final Points
Variable 1.0 = 0.6
Variable 2.0 = 0.3
Variable 3.0 = 0.6
Variable 4.0 = 0.3
Variable 5.0 = 0.6
0 comentarios
Respuestas (2)
Walter Roberson
el 28 de Ag. de 2012
fmincon is a minimizer, not a 0 finder.
You could minimize @(x) myfun(x).^2
0 comentarios
Alan Weiss
el 28 de Ag. de 2012
To expand upon Walter's answer, use lsqnonlin instead of fmincon.
Alan Weiss
MATLAB mathematical toolbox documentation
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