Yanbo Fan

Hi, I'm working on a maximization problem. Here is some information about my problem. From the information, I'm working on a QCP. In each optimization process, I will give a group of QC to obtain t...

Hi,  When I was solving a problem, I found that my decision variables did not participate in the calculation in the optimization process, but I printed the variables in the calculation process and ...

Hi,  I'm solving a problem. During the solver process, the gap value does not decrease at 0.03%. So I made the following operations. For these operations, I have the following questions. First, sin...

Hi,  I'm solving a simple optimization problem， the specific form can be expressed as MAX ∑∑ (-1 * norm(q[j] - s[k]) ** 2). Obviously, this is a convex optimization problem.  About my question. ...

Hi, I'm solving a problem which is （1）, MAX ∑ -1 * L [ k, j ]  * L [ k, j ] L [ k, j ] = norm(q [ j ] - s [ k ]) In (1), only q is the decision variable. The (1)  is obviously a convex proble...

Hi, When I solved a problem, I found that gurobi could not recognize the array parameters from the main function. When solving, the array cannot be indexed. What can I do to pass array variables fr...

Hi, I'm solving a maximum concave problem. It's calculation speed is very slow. This is the LP file of my model. When I simplify the model, the solution model contains the part about the decision ...

Hi,  I'm using gurobi to build an iterative algorithm whose input and output variables are matrices. I have successfully solved single problem with gurobi, but I can not use the optimal solution of...

Hi,  Can someone tell me how to express this constraint in gurobi? I didn't find a description in the API documentation. If you can help me, I will be very grateful to you. This is my constr. This...

Hi everyone, I'm trying to solve a model. Max log2(1 + ∑ 1 / Xj), which Xj = ||q[j] - s[1]|| ** 2, (1<=j <=4) log2(1 + 1 / x) is convex with x and I can get the optimal solution which about MAX(log...