HEURBEFORELP
|
Description
|
Branch and Bound: Determines whether primal heuristics should be run before the initial LP relaxation has been solved.
|
||||||
|
Type
|
Integer
|
||||||
|
Values
|
|
||||||
|
Default value
|
-1
|
||||||
|
Note
|
It is possible that a heuristic will find an optimal integer solution that will result in the LP relaxation solution being cut off. If the problem is solved with the "
l" flag to
XPRSmipoptimize (i.e., stop after solving the LP relaxation), then
LPSTATUS might be returned as
XPRS_LP_CUTOFF or
XPRS_LP_CUTOFF_IN_DUAL.
If dedicated heuristic threads are enabled through the HEURTHREADS control, then the initial heuristics will be run in parallel with the LP solve, instead of before. |
||||||
|
Affects routines
|
|||||||
|
See also
|
© 2001-2020 Fair Isaac Corporation. All rights reserved. This documentation is the property of Fair Isaac Corporation (“FICO”). Receipt or possession of this documentation does not convey rights to disclose, reproduce, make derivative works, use, or allow others to use it except solely for internal evaluation purposes to determine whether to purchase a license to the software described in this documentation, or as otherwise set forth in a written software license agreement between you and FICO (or a FICO affiliate). Use of this documentation and the software described in it must conform strictly to the foregoing permitted uses, and no other use is permitted.