A decimal number between 0 (zero) and 100 that specifies the Integer Optimality percentage tolerance.
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Newton, which uses a quasi-Newton method, is the default search method. Use the Search options to specify the search algorithm that will be used at each iteration to decide which direction to search in: 1 represents the Newton search method, and 2 represents the conjugate search method. The default value is 1 (forward differencing).
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With constraints whose values change rapidly near their limits, you should use central differencing. Central differencing requires more worksheet recalculations, but it may help with problems that generate a message saying that Solver could not improve the solution. Specifies forward differencing or central differencing for estimates of partial derivatives of the objective and constraint functions: 1 represents forward differencing, and 2 represents central differencing. The default value is 1 (tangent estimates).ĭerivatives Optional Variant. Quadratic estimates use quadratic extrapolation this may improve the results for highly nonlinear problems. Tangent estimates use linear extrapolation from a tangent vector. Specifies the approach used to obtain initial estimates of the basic variables in each one-dimensional search: 1 represents tangent estimates, and 2 represents quadratic estimates. The default value is False.Įstimates Optional Variant. False to not have Solver pause at each trial solution. You can pass Solver a macro to run at each pause by using the ShowRef argument of the SolverSolve function. True to have Solver pause at each trial solution. This speeds the solution process, but it should be used only if all the relationships in the model are linear. True to have Solver assume that the underlying model is linear. In general, the higher the degree of precision you specify (the smaller the number), the more time Solver will take to reach solutions.ĪssumeLinear Optional Variant. A smaller number of decimal places (for example, 0.0001) indicates a lower degree of precision. A number between 0 (zero) and 1 that specifies the degree of precisionwith which constraints (including integer constraints) must be satisfied. The maximum number of iterations Solver will use in solving the problem.
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The maximum amount of time (in seconds) Solver will spend solving the problem. SolverOptions( MaxTime, Iterations, Precision, AssumeLinear, StepThru, Estimates, Derivatives, SearchOption, IntTolerance, Scaling, Convergence, AssumeNonNeg, PopulationSize, RandomSeed, MultiStart, RequireBounds, MutationRate, MaxSubproblems, MaxIntegerSols, SolveWithout, MaxTimeNoImp) If Solver does not appear under Available References, click Browse, and then open Solver.xlam in the \Program Files\Microsoft Office\Office14\Library\SOLVER subfolder. In the Visual Basic Editor, with a module active, click References on the Tools menu, and then select Solver under Available References. After the Solver add-in is installed, you must establish a reference to the Solver add-in.
#Frontline solver trial variables limit how to
For information about how to do that, see Using the Solver VBA Functions.
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Before you can use this function, you must have the Solver add-in enabled and installed. Note The Solver add-in is not enabled by default. This function and its arguments correspond to the options in the Solver Options dialog box. Allows you to specify advanced options for your Solver model.