branch_vanillafullstrong.h File Reference
Detailed Description
vanilla full strong LP branching rule
The vanilla full strong branching rule is a purged implementation of full strong branching, for academic purposes. It implements full strong branching with the following specific features:
- no cutoff or domain reduction: only branching.
- idempotent (optional): leave SCIP, as much as possible, in the same state before / after the strong branching calls. Basically, do not update any statistic.
- donotbranch (optional): do no perform branching. So that the brancher can be called as an oracle only (on which variable would you branch ? But do not branch please).
- scoreall (optional): continue scoring variables, even if infeasibility is detected along the way.
- collectscores (optional): store the candidate scores from the last call, which can then be retrieved by calling SCIPgetVanillafullstrongData().
- integralcands (optional): get candidates from SCIPgetPseudoBranchCands() instead of SCIPgetLPBranchCands(), i.e., consider all non-fixed variables as branching candidates, not only fractional ones.
Definition in file branch_vanillafullstrong.h.
#include "scip/def.h"
#include "scip/type_result.h"
#include "scip/type_retcode.h"
#include "scip/type_scip.h"
#include "scip/type_var.h"
Go to the source code of this file.
Functions | |
SCIP_RETCODE | SCIPincludeBranchruleVanillafullstrong (SCIP *scip) |
SCIP_RETCODE | SCIPgetVanillafullstrongData (SCIP *scip, SCIP_VAR ***cands, SCIP_Real **candscores, int *ncands, int *npriocands, int *bestcand) |
Function Documentation
◆ SCIPgetVanillafullstrongData()
SCIP_RETCODE SCIPgetVanillafullstrongData | ( | SCIP * | scip, |
SCIP_VAR *** | cands, | ||
SCIP_Real ** | candscores, | ||
int * | ncands, | ||
int * | npriocands, | ||
int * | bestcand | ||
) |
recovers candidate variables and their scores from last vanilla full strong branching call
- Parameters
-
scip SCIP data structure cands pointer to store candidate variables; or NULL candscores pointer to store candidate scores; or NULL ncands pointer to store number of candidates; or NULL npriocands pointer to store number of priority candidates; or NULL bestcand pointer to store best branching candidate; or NULL
Definition at line 564 of file branch_vanillafullstrong.c.
References BRANCHRULE_NAME, NULL, SCIP_OKAY, SCIPbranchruleGetData(), and SCIPfindBranchrule().
Referenced by SCIPincludeBranchruleVanillafullstrong().