Error using "mskoptimset"

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MohammadReza Jabbari (Jabari) 2023-2-28

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1920495-error-using-mskoptimset

评论： Walter Roberson 2023-3-3

Hi. I want to use "surrogateopt" or "ga" to solve mixed-integer programming. But I got this error for both solvers. If someone could help me, I would greatly appreciate it.

"Error using mskoptimset

Expected argument 2 to be a string parameter name or an options structure

created with mskoptimset.

Error in linprog (line 138)"

My code is as follows:

Objconstr = @(phi) DL_Sum_Throughput (phi, P_DL_b_m, h_b_m, sigma2, K);
A_Eq1  = kron( ones(1,B) , eye(M) );        % Dim: M x BM
A_Eq2  = kron( ones(1,K) , eye(M) );        % Dim: M x KM
A_Eq3  = zeros(1,K);                        % Dim: 1 x K
A_Eq   = blkdiag( A_Eq1 , A_Eq2, A_Eq3 );   % Dim: 2M+1 x M(B+K)
b_Eq   = [ones(2*M,1) ; 0];                 % Dim: 2M+1 x 1
A_InEq1 = kron( eye(B) , ones(1,M) );           % Dim: B x BM
A_InEq2 = 2 - kron( eye(K) , ones(1,M) );       % Dim: K x KM 
A_InEq3 = zeros(1,K);                           % Dim: 1 x K
b_InEq1 = round(P_DL_b'./sum(P_DL_b) *M);       % Dim: B x 1
b_InEq2 = zeros(K,1);                           % Dim: K x 1
A_InEq  = blkdiag(A_InEq1 , A_InEq2, A_InEq3);  % Dim: B+K+1 x M(B+K) 
b_InEq  = [b_InEq1 ; b_InEq2; 0];               % Dim: B+K+1 x 1
intcon = 1:1:M*(B+K);                      % Decision Variables that are integer-valued
lb = zeros(1,M*(B+K)+K);
ub = [ones(1,M*(B+K)) , ones(1,K)*W_Total];
% ub = [ones(1,M*(B+K) + K)];
%% Mixed Integer Surrogate Optimization
options_surr = optimoptions('surrogateopt','PlotFcn','surrogateoptplot','ConstraintTolerance',1e-6,...
    'MaxFunctionEvaluations',200);
problem_surr = struct('objective',Objconstr,'lb',lb,'ub',ub,'intcon',intcon,...
    'Aineq',A_InEq,'bineq',b_InEq,'Aeq',A_Eq,'beq',b_Eq,'options',options_surr,'solver','surrogateopt');
[x_surr, fval_surr, exitflag_surr, output_surr, trials_surr] = surrogateopt(problem_surr);

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MohammadReza Jabbari (Jabari) 2023-3-3

编辑：MohammadReza Jabbari (Jabari) 2023-3-3

在 MATLAB Online 中打开

Thank you for your time. I checked "liprog" function but I couldn't understand why this error arise. As I know, "linprog" just is used to generate a feasible point for initialization. I have attached the simplified/minimal code to this comment. I think it can be run in your system. I hope you can find the origin of this error.

clc
clear
close all
format compact
rng('default') % For reproducibility
%% Initialization
W_Total = 20e6;
R_Cov = 1000; 
M = 20;       
B = 4;
K = 10;      
sigma2_dB = 0;
sigma2    = 10^(sigma2_dB/10);
phi_u   = unifrnd(0, 2*pi, 1, M);
alpha_u = unifrnd(0.01*R_Cov, 0.9*R_Cov, 1, M);
Xu = alpha_u.*[cos(phi_u) ; sin(phi_u) ; zeros(1,M)];
%% Initialization for Optimization
P_DL_b_m = rand(B,M);
P_DL_b = rand(1,B);
h_b_m = rand(B,M);
%%% Mixed-Integer "Surrogate" Optimization
Objconstr = @(phi) DL_Sum_Throughput_test (phi, P_DL_b_m, h_b_m, sigma2, K, W_Total);  % Objective Function
%%% Equality Constraints
A_Eq1 = kron( ones(1,B) , eye(M) );            % Dim: M x BM
A_Eq2 = kron( ones(1,K) , eye(M) );            % Dim: M x KM
b_Eq1 = ones(M,1);                             % Dim: M x 1
b_Eq2 = ones(M,1);                             % Dim: M x 1
A_Eq  =  [A_Eq1 , zeros(M,K*(M+1));
          zeros(M,B*M) , A_Eq2 , zeros(M,K)];  % Dim: 2M x M(B+K)+K
b_Eq  = [b_Eq1 ; b_Eq2];                       % Dim: 2M x 1
%%% Inequality Constraints
A_InEq1 = kron( eye(B) , ones(1,M) );          % Dim: B x BM
b_InEq1 = round(P_DL_b'./sum(P_DL_b) *M);      % Dim: B x 1
A_InEq2 = ones(1,K);
b_InEq2 = W_Total;
A_InEq  = [A_InEq1 , zeros(B,K*(M+1)) ;
    zeros(1,M*(B+K)) , A_InEq2] ;              % Dim: B+1 x M(B+K)+K 
b_InEq  = [b_InEq1 ;  b_InEq2];                % Dim: B+1 x 1
intcon = 1:1:M*(B+K);                          % Indice of DVs that are integer-value
lb = zeros(M*(B+K)+K , 1);                     % Lower bounds of DVs
ub = [ones(M*(B+K) , 1) ; ones(K,1)*W_Total];  % Upper bounds of DVs
options_surr = optimoptions('surrogateopt', ...
    'PlotFcn','surrogateoptplot', ...
    'ConstraintTolerance',1e-2,...
    'MaxFunctionEvaluations',100);
problem_surr = struct('objective',Objconstr,'lb',lb,'ub',ub,'intcon',intcon,...
    'Aineq',A_InEq,'bineq',b_InEq,'Aeq',A_Eq,'beq',b_Eq,'options',options_surr,'solver','surrogateopt');
[x_surr, fval_surr, exitflag_surr, output_surr, trials_surr] = surrogateopt(problem_surr);
The linear constraints and bounds are infeasible.

MohammadReza Jabbari (Jabari) 2023-3-3

编辑：MohammadReza Jabbari (Jabari) 2023-3-3

It might be because the "Mosek" solver not being installed on your system.

Walter Roberson 2023-3-3

在 MATLAB Online 中打开

You do not call the Mosek solver in your code.

If the Mosek solver is interfering, then the problem is something in the Mosek solver, such as if the solver provides its own linprog() that is being called instead of MATLAB's.

Experiment with

restoredefaultpath; rehash toolboxcache

and see if the code starts working (or at least not giving the mosek error.) If it does then use tests such as

which -all linprog

or use the debugger to figure out where a non-mathworks function is being called.

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Error using "mskoptimset"

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Error using "mskoptimset"

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