SCIP_Treemodel Struct Reference

Detailed Description

parameters required by the Treemodel branching rules

Definition at line 101 of file treemodel.c.

Data Fields
SCIP_Bool	enabled
char	highrule
char	lowrule
int	height
char	filterhigh
char	filterlow
int	maxfpiter
int	maxsvtsheight
char	fallbackinf
char	fallbacknoprim
SCIP_Real	smallpscost

Field Documentation

enabled

SCIP_Bool SCIP_Treemodel::enabled

should candidate branching variables be scored using the Treemodel rule?

Definition at line 103 of file treemodel.c.

Referenced by SCIPtreemodelSelectCandidate().

highrule

char SCIP_Treemodel::highrule

scoring function to use at nodes predicted to be high in the tree. ('d'efault, 's'vts, 'r'atio, 't'ree sample)

Definition at line 105 of file treemodel.c.

Referenced by SCIPtreemodelSelectCandidate().

lowrule

char SCIP_Treemodel::lowrule

scoring function to use at nodes predicted to be low in the tree ('d'efault, 's'vts, 'r'atio, 't'ree sample)

Definition at line 107 of file treemodel.c.

Referenced by SCIPtreemodelSelectCandidate().

height

int SCIP_Treemodel::height

estimated tree height at which we switch from using the low rule to the high rule

Definition at line 109 of file treemodel.c.

Referenced by SCIPtreemodelSelectCandidate().

filterhigh

char SCIP_Treemodel::filterhigh

should dominated candidates be filtered before using the high scoring function? ('a'uto, 't'rue, 'f'alse) [ADVANCED]

Definition at line 111 of file treemodel.c.

Referenced by SCIPtreemodelSelectCandidate().

filterlow

char SCIP_Treemodel::filterlow

should dominated candidates be filtered before using the low scoring function? ('a'uto, 't'rue, 'f'alse) [ADVANCED]

Definition at line 113 of file treemodel.c.

Referenced by SCIPtreemodelSelectCandidate().

maxfpiter

int SCIP_Treemodel::maxfpiter

maximum number of fixed-point iterations when computing the ratio [ADVANCED]

Definition at line 115 of file treemodel.c.

Referenced by computeVarRatio().

maxsvtsheight

int SCIP_Treemodel::maxsvtsheight

maximum height to compute the SVTS score exactly before approximating [ADVANCED]

Definition at line 117 of file treemodel.c.

Referenced by computeSVTS().

fallbackinf

char SCIP_Treemodel::fallbackinf

which method should be used as a fallback if the tree size estimates are infinite? ('d'efault, 'r'atio) [ADVANCED]

Definition at line 119 of file treemodel.c.

Referenced by selectCandidateUsingSampling(), and selectCandidateUsingSVTS().

fallbacknoprim

char SCIP_Treemodel::fallbacknoprim

which method should be used as a fallback if there is no primal bound available? ('d'efault, 'r'atio) [ADVANCED]

Definition at line 121 of file treemodel.c.

Referenced by selectCandidateUsingSampling(), and selectCandidateUsingSVTS().

smallpscost

SCIP_Real SCIP_Treemodel::smallpscost

threshold at which pseudocosts are considered small, making hybrid scores more likely to be the deciding factor in branching [ADVANCED]

Definition at line 123 of file treemodel.c.