/** creates the random branching rule and includes it in SCIP */
SCIP_RETCODE SCIPincludeBranchruleRandom(
SCIP* scip /**< SCIP data structure */
)
{
SCIP_BRANCHRULEDATA* branchruledata;
SCIP_BRANCHRULE* branchrule;
/* create random branching rule data */
SCIP_CALL( SCIPallocMemory(scip, &branchruledata) );
branchruledata->seed = 0;
/* include allfullstrong branching rule */
SCIP_CALL( SCIPincludeBranchruleBasic(scip, &branchrule, BRANCHRULE_NAME, BRANCHRULE_DESC, BRANCHRULE_PRIORITY,
BRANCHRULE_MAXDEPTH, BRANCHRULE_MAXBOUNDDIST, branchruledata) );
assert(branchrule != NULL);
/* set non-fundamental callbacks via specific setter functions*/
SCIP_CALL( SCIPsetBranchruleCopy(scip, branchrule, branchCopyRandom) );
SCIP_CALL( SCIPsetBranchruleFree(scip, branchrule, branchFreeRandom) );
SCIP_CALL( SCIPsetBranchruleInit(scip, branchrule, branchInitRandom) );
SCIP_CALL( SCIPsetBranchruleExecLp(scip, branchrule, branchExeclpRandom) );
SCIP_CALL( SCIPsetBranchruleExecExt(scip, branchrule, branchExecextRandom) );
SCIP_CALL( SCIPsetBranchruleExecPs(scip, branchrule, branchExecpsRandom) );
SCIP_CALL( SCIPaddIntParam(scip, "branching/" BRANCHRULE_NAME "/seed", "initial random seed value",
&branchruledata->initseed, FALSE, DEFAULT_INITSEED, 0, INT_MAX, NULL, NULL) );
return SCIP_OKAY;
}
/** creates the all variables full strong LP branching rule and includes it in SCIP */
SCIP_RETCODE SCIPincludeBranchruleAllfullstrong(
SCIP* scip /**< SCIP data structure */
)
{
SCIP_BRANCHRULEDATA* branchruledata;
SCIP_BRANCHRULE* branchrule;
/* create allfullstrong branching rule data */
SCIP_CALL( SCIPallocMemory(scip, &branchruledata) );
branchruledata->lastcand = 0;
branchruledata->skipup = NULL;
branchruledata->skipdown = NULL;
/* include allfullstrong branching rule */
SCIP_CALL( SCIPincludeBranchruleBasic(scip, &branchrule, BRANCHRULE_NAME, BRANCHRULE_DESC, BRANCHRULE_PRIORITY,
BRANCHRULE_MAXDEPTH, BRANCHRULE_MAXBOUNDDIST, branchruledata) );
assert(branchrule != NULL);
/* set non-fundamental callbacks via specific setter functions*/
SCIP_CALL( SCIPsetBranchruleCopy(scip, branchrule, branchCopyAllfullstrong) );
SCIP_CALL( SCIPsetBranchruleFree(scip, branchrule, branchFreeAllfullstrong) );
SCIP_CALL( SCIPsetBranchruleInit(scip, branchrule, branchInitAllfullstrong) );
SCIP_CALL( SCIPsetBranchruleExecLp(scip, branchrule, branchExeclpAllfullstrong) );
SCIP_CALL( SCIPsetBranchruleExecPs(scip, branchrule, branchExecpsAllfullstrong) );
return SCIP_OKAY;
}
/** creates the multi-aggregated branching rule and includes it in SCIP */
SCIP_RETCODE SCIPincludeBranchruleStp(
SCIP* scip /**< SCIP data structure */
)
{
SCIP_BRANCHRULEDATA* branchruledata;
SCIP_BRANCHRULE* branchrule;
/* create stp branching rule data */
SCIP_CALL( SCIPallocMemory(scip, &branchruledata) );
branchruledata->lastcand = 0;
/* include branching rule */
SCIP_CALL( SCIPincludeBranchruleBasic(scip, &branchrule, BRANCHRULE_NAME, BRANCHRULE_DESC, BRANCHRULE_PRIORITY,
BRANCHRULE_MAXDEPTH, BRANCHRULE_MAXBOUNDDIST, branchruledata) );
assert(branchrule != NULL);
/* set non fundamental callbacks via setter functions */
SCIP_CALL( SCIPsetBranchruleCopy(scip, branchrule, branchCopyStp) );
SCIP_CALL( SCIPsetBranchruleFree(scip, branchrule, branchFreeStp) );
SCIP_CALL( SCIPsetBranchruleInit(scip, branchrule, branchInitStp) );
SCIP_CALL( SCIPsetBranchruleExit(scip, branchrule, branchExitStp) );
SCIP_CALL( SCIPsetBranchruleExecLp(scip, branchrule, branchExeclpStp) );
return SCIP_OKAY;
}
/** creates the myfullstrong branching rule and includes it in SCIP */
SCIP_RETCODE SCIPincludeBranchruleMyfullstrong(
SCIP* scip /**< SCIP data structure */
)
{
SCIP_BRANCHRULEDATA* branchruledata;
SCIP_BRANCHRULE* branchrule;
/* create myfullstrong branching rule data */
SCIP_CALL( SCIPallocMemory(scip, &branchruledata) );
/* TODO: (optional) create branching rule specific data here */
/* include branching rule */
SCIP_CALL( SCIPincludeBranchruleBasic(scip, &branchrule, BRANCHRULE_NAME, BRANCHRULE_DESC, BRANCHRULE_PRIORITY,
BRANCHRULE_MAXDEPTH, BRANCHRULE_MAXBOUNDDIST, branchruledata) );
assert(branchrule != NULL);
/* set non fundamental callbacks via setter functions */
SCIP_CALL( SCIPsetBranchruleCopy(scip, branchrule, branchCopyMyfullstrong) );
SCIP_CALL( SCIPsetBranchruleFree(scip, branchrule, branchFreeMyfullstrong) );
SCIP_CALL( SCIPsetBranchruleInit(scip, branchrule, branchInitMyfullstrong) );
SCIP_CALL( SCIPsetBranchruleExit(scip, branchrule, branchExitMyfullstrong) );
SCIP_CALL( SCIPsetBranchruleExecPs(scip, branchrule, branchExecpsMyfullstrong) );
#if 0
SCIP_CALL( SCIPsetBranchruleInitsol(scip, branchrule, branchInitsolMyfullstrong) );
SCIP_CALL( SCIPsetBranchruleExitsol(scip, branchrule, branchExitsolMyfullstrong) );
SCIP_CALL( SCIPsetBranchruleExecExt(scip, branchrule, branchExecextMyfullstrong) );
SCIP_CALL( SCIPsetBranchruleExecLp(scip, branchrule, branchExeclpMyfullstrong) );
#endif
return SCIP_OKAY;
}
