using GA including a hybrid function option

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shirin mhd
shirin mhd 2022-8-12
评论： Star Strider 2022-8-16
Hi everyone
I have a problem related to how to use options in GA .
I want to use a hybrid function like fmincon.
n1=1;
n2=5;
n3=7;
n4=466352414.326725;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
A=[-1 -1 -1 -1;...
1 1 1 1;...
-1 0 0 0;...
0 -1 0 0;...
0 0 -1 0;...
0 0 0 -1];
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
b=[0,4.8e8,0,0,0,0];
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
ub=[n1,n2,n3,n4];
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
fun=@(t) ((5*t(1)^2)-(10*(t(1))))+...
((0.4*(t(2))^2)-(4*(t(2))))+...
((0.408163265306122*(t(3))^2)-(5.71428571428571*(t(3))))+...
((1.3170965284189E-07*(t(4))^2)-(122.8462291859*(t(4))));
rng default
opt=optimoptions(@ga,'HybridFcn',fmincon),
w=ga(fun,4,A,b,[],[],[],[],ub);
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
w
sumni=n1+n2+n3+n4
sumresult=w(1)+w(2)+w(3)+w(4)
but the result is this:
Not enough input arguments.
Error in fmincon (line 218)
X, A, B, Aeq, Beq, LB, UB);
Error in plotttt (line 22)
opt=optimoptions(@ga,'HybridFcn',fmincon),
how should I write option to get a result?

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采纳的回答

Star Strider
Star Strider 2022-8-12
Ran in:
In the optimoptions call, the 'HybridFcn' name-value pair must have a function handle to they hybrid function as its value.
It is also necessary to specify the arguments correctly, and to include ‘opt’ as the last argument.
Then, it works —
n1=1;
n2=5;
n3=7;
n4=466352414.326725;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
A=[-1 -1 -1 -1;...
1 1 1 1;...
-1 0 0 0;...
0 -1 0 0;...
0 0 -1 0;...
0 0 0 -1];
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
b=[0,4.8e8,0,0,0,0];
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
ub=[n1,n2,n3,n4];
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
fun=@(t) ((5*t(1)^2)-(10*(t(1))))+...
((0.4*(t(2))^2)-(4*(t(2))))+...
((0.408163265306122*(t(3))^2)-(5.71428571428571*(t(3))))+...
((1.3170965284189E-07*(t(4))^2)-(122.8462291859*(t(4))));
rng default
opt=optimoptions(@ga,'HybridFcn',@fmincon)
opt =
ga options: Set properties: HybridFcn: @fmincon Default properties: ConstraintTolerance: 1.0000e-03 CreationFcn: [] CrossoverFcn: [] CrossoverFraction: 0.8000 Display: 'final' EliteCount: '0.05*PopulationSize' FitnessLimit: -Inf FitnessScalingFcn: @fitscalingrank FunctionTolerance: 1.0000e-06 InitialPopulationMatrix: [] InitialPopulationRange: [] InitialScoresMatrix: [] MaxGenerations: '100*numberOfVariables' MaxStallGenerations: 50 MaxStallTime: Inf MaxTime: Inf MutationFcn: [] NonlinearConstraintAlgorithm: 'auglag' OutputFcn: [] PlotFcn: [] PopulationSize: '50 when numberOfVariables <= 5, else 200' PopulationType: 'doubleVector' SelectionFcn: [] UseParallel: 0 UseVectorized: 0
w=ga(fun,4,A,b,[],[],[],ub,[],opt);
Optimization terminated: average change in the fitness value less than options.FunctionTolerance.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
format shortE % <— ADDED
w
w = 1×4
1.0e+00 * 9.9998e-01 5.0000e+00 6.9999e+00 4.6635e+08
sumni=n1+n2+n3+n4
sumni =
4.6635e+08
sumresult=w(1)+w(2)+w(3)+w(4)
sumresult =
4.6635e+08
.

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