Hello,

I am trying to solve " the Binary Integer Quadratic (BIQ) problem" with Mosek. Here is my code. But I face the following error (You can see the error after the code). There is no error whenever I remove the keyword “binary” in these lines: " variable x(m) binary" and “variable X(m,m) symmetric binary”. Could you help me how to solve this problem?

```
"Code"
```

clc;

clear;

% Problem Data (Parameters)

load bqp100.1.txt; % Importing data from the sparse file downloaded from the BIQMAC library

Q = spconvert(bqp100_1);

m = size(Q,1);

for i = 1 : m

for j = i+1:m

Q(j,i) = Q (i,j);

end

end

% Mathematical model

cvx_begin SDP

```
cvx_solver Mosek
cvx_precision best
variable x(m) binary
variable X(m,m) symmetric binary
minimize ( trace(Q*X) )
subject to:
diag(X)- x == 0 % we define this constraint because we want to use trace(Q*X) instead of X'*Q*X
[1 x';x X] <In> semidefinite(m+1)
```

cvx_end

```
"Error"
```

Reference to non-existent field ‘sol’.

Error in cvx_mosek

Error in cvxprob/solve (line 429)

[ x, status, tprec, iters ] = shim.solve( At, b, c, cones, quiet, prec,

solv.settings, eargs{:} );

Error in cvx_end (line 88)

solve( prob );

Error in BIQ_V0 (line 33)

cvx_end