XPRSloaddelayedrows
XPRSloaddelayedrows |
Purpose
Specifies that a set of rows in the matrix will be treated as delayed rows during a global search. These are rows that must be satisfied for any integer solution, but will not be loaded into the active set of constraints until required.
Synopsis
int XPRS_CC XPRSloaddelayedrows(XPRSprob prob, int nrows, const int mrows[]);
Arguments
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prob
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The current problem.
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nrows
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The number of delayed rows.
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mrows
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An array of row indices to treat as delayed rows.
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Example
This sets the first six matrix rows as delayed rows in the global problem
prob.
int mrows[] = {0,1,2,3,4,5}
...
XPRSloaddelayedrows(prob,6,mrows);
XPRSmipoptimize(prob,"");
Further information
Delayed rows must be set up before solving the problem. Any delayed rows will be removed from the matrix after presolve and added to a special pool. A delayed row will be added back into the active matrix only when such a row is violated by an integer solution found by the Optimizer.
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