Fulya Terzi

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Activity overview

Latest activity by Fulya Terzi
  • Fulya Terzi created a post,

    Barrier Display and Barrier strting Point Algorithm in Gurobi Java

    Ongoing

    Hi, I need to learn about how can I write in Gurobi the Barrier Display option. What I mean that in cplex Barrier Display parameter can be selected among 0, 1 and 2 which sets the level of barrier ...

  • Fulya Terzi created a post,

    model.getValues()

    Answered

    Hi, I need to get the values of decision variables.  for (Entry<String, Line> lineEntry : optimizationParams.getNetworkElements().getLines().entrySet()) {       if (LakeId.equals(lineEntry.getValue...

  • Fulya Terzi commented,

    for (Map.Entry<String, GRBVar[]> varEntry : DecVariables.entrySet()) //IloIntVar[]        varEntry.getValue(). set(GRB.CharAttr.VType, GRB.CONTINUOUS); // The error message: Cannot invoke set(GRB.C...

  • Fulya Terzi commented,

    Thank a lot. I got an error such as Cannot invoke set(GRB.CharAttr, char) on the array type GRBVar[]. Since my object is GRBVar[]. How will I make for array type GRBVar?   Thank you in advance

  • Fulya Terzi created a post,

    Change variable type?

    Answered

    Hi,  I want to relax the integrality constraint on the variable. What I mean that I want to change variable type from integer to continuous type?  How can I do this in Gurobi?    Thank you in advance.

  • Fulya Terzi created a post,

    Gurobi in Java - How can I add two Expression?

    Ongoing

    Hello, I declare a new expression such as GRBQuadExpr[ ] ObjExpr = new GRBQuadExpr[size];  I have another two expressions such as GRBLinExpr LinObjExpr and GRBQuadExpr QuadObjExpr.  for ( count=0; ...

  • Fulya Terzi commented,

    Okey I solved this problem thank you.

  • Fulya Terzi commented,

    Hi Matthias, Actually, this is not a quadratic constraint. It is a method to construct an QuadExpr then another place we call this function to form objective function. My problem is that how can I ...

  • Fulya Terzi created a post,

    How can I write Cplex model.prod() function in Gurobi Java?

    Answered

    public GRBQuadExpr funcName(SegmentName segment, GRBModel model, GRBVar decVar)throws GRBException { // IloNumExpr IloCplex IloNumVar IloException// Gurobi does not except this one. How will I chan...