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GAMS — The Solver Manuals - Available Software

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COIN-OR 109<br />

0 Do not load variable and equation names.<br />

1 Load variable and equation names.<br />

gams/solvefinal (integer)<br />

Sometimes the solution process after the branch-and-cut that solves the problem with fixed discrete variables<br />

takes a long time and the user is interested in the primal values of the solution only. In these cases, this<br />

option can be used to turn this final solve off. Without the final solve no proper marginal values are available<br />

and only zeros are returned to <strong>GAMS</strong>.<br />

(default = 1)<br />

0 Do not solve the fixed problem.<br />

1 Solve the fixed problem and return duals.<br />

gams/mipstart (integer)<br />

This option controls the use of advanced starting values for mixed integer programs. A setting of 1 indicates<br />

that the variable level values should be checked to see if they provide an integer feasible solution before<br />

starting optimization.<br />

(default = 1)<br />

0 Do not use the initial variable levels.<br />

1 Try to use the initial variable levels as a MIP starting solution.<br />

gams/usercutcall (string)<br />

<strong>The</strong> <strong>GAMS</strong> command line (minus the gams executable name) to call the cut generator.<br />

gams/usercutfirst (integer)<br />

Calls the cut generator for the first n nodes.<br />

(default = 10)<br />

gams/usercutfreq (integer)<br />

Determines the frequency of the cut generator model calls.<br />

(default = 10)<br />

gams/usercutinterval (integer)<br />

Determines the interval when to apply the multiplier for the frequency of the cut generator model calls. See<br />

gams/userheurinterval for details.<br />

(default = 100)<br />

gams/usercutmult (integer)<br />

Determines the multiplier for the frequency of the cut generator model calls.<br />

(default = 2)<br />

gams/usercutnewint (integer)<br />

Calls the cut generator if the solver found a new integer feasible solution.<br />

(default = 1)<br />

0 . Do not call cut generator because a new integer feasible solution is found.<br />

1 . Let SCIP call the cut generator if a new integer feasible solution is found.<br />

gams/usergdxin (string)<br />

<strong>The</strong> name of the GDX file read back into SCIP.<br />

(default = bchin.gdx)

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