Detailed Description

internal methods for bandit algorithms

Author: Gregor Hendel

Definition in file bandit.h.

#include "scip/def.h"
#include "blockmemshell/memory.h"
#include "scip/type_retcode.h"
#include "scip/type_result.h"
#include "scip/type_set.h"
#include "scip/type_primal.h"
#include "scip/type_bandit.h"
#include "scip/stat.h"

Go to the source code of this file.

Functions
SCIP_RETCODE	SCIPbanditCreate (SCIP_BANDIT *bandit, SCIP_BANDITVTABLE banditvtable, BMS_BLKMEM blkmem, BMS_BUFMEM bufmem, SCIP_Real priorities, int nactions, unsigned int initseed, SCIP_BANDITDATA banditdata)

SCIP_RETCODE	SCIPbanditFree (BMS_BLKMEM blkmem, SCIP_BANDIT *bandit)

SCIP_RETCODE	SCIPbanditReset (BMS_BUFMEM bufmem, SCIP_BANDIT bandit, SCIP_Real *priorities, unsigned int seed)

SCIP_BANDITDATA *	SCIPbanditGetData (SCIP_BANDIT *bandit)

void	SCIPbanditSetData (SCIP_BANDIT bandit, SCIP_BANDITDATA banditdata)

SCIP_RETCODE	SCIPbanditvtableCreate (SCIP_BANDITVTABLE *banditvtable, const char name, SCIP_DECL_BANDITFREE((banditfree)), SCIP_DECL_BANDITSELECT((banditselect)), SCIP_DECL_BANDITUPDATE((banditupdate)), SCIP_DECL_BANDITRESET((banditreset)))

void	SCIPbanditvtableFree (SCIP_BANDITVTABLE **banditvtable)

Function Documentation

◆ SCIPbanditCreate()

SCIP_RETCODE SCIPbanditCreate	(	SCIP_BANDIT **	bandit,
		SCIP_BANDITVTABLE *	banditvtable,
		BMS_BLKMEM *	blkmem,
		BMS_BUFMEM *	bufmem,
		SCIP_Real *	priorities,
		int	nactions,
		unsigned int	initseed,
		SCIP_BANDITDATA *	banditdata
	)

creates and resets bandit algorithm

Parameters

bandit	pointer to bandit algorithm data structure
banditvtable	virtual table for this bandit algorithm
blkmem	block memory for parameter settings
bufmem	buffer memory
priorities	nonnegative priorities for each action, or NULL if not needed
nactions	the positive number of actions for this bandit
initseed	initial seed for random number generation
banditdata	algorithm specific bandit data

Definition at line 42 of file bandit.c.

References BMSallocBlockMemory, SCIP_Bandit::data, SCIP_Bandit::nactions, NULL, SCIP_Bandit::rng, SCIP_ALLOC, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIPbanditReset(), SCIPerrorMessage, SCIPrandomCreate(), and SCIP_Bandit::vtable.

Referenced by SCIPbanditCreateEpsgreedy(), SCIPbanditCreateExp3(), and SCIPbanditCreateUcb().

◆ SCIPbanditFree()

SCIP_RETCODE SCIPbanditFree	(	BMS_BLKMEM *	blkmem,
		SCIP_BANDIT **	bandit
	)

calls destructor and frees memory of bandit algorithm

Parameters

blkmem	block memory
bandit	pointer to bandit algorithm data structure

Definition at line 80 of file bandit.c.

References BMSfreeBlockMemory, NULL, SCIP_Bandit::rng, SCIP_CALL, SCIP_OKAY, SCIPrandomFree(), and SCIP_Bandit::vtable.

Referenced by SCIPfreeBandit().

◆ SCIPbanditReset()

SCIP_RETCODE SCIPbanditReset	(	BMS_BUFMEM *	bufmem,
		SCIP_BANDIT *	bandit,
		SCIP_Real *	priorities,
		unsigned int	seed
	)

reset the bandit algorithm

Parameters

bufmem	buffer memory
bandit	pointer to bandit algorithm data structure
priorities	nonnegative priorities for each action, or NULL if not needed
seed	initial seed for random number generation

Definition at line 109 of file bandit.c.

References NULL, SCIP_Bandit::rng, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIPbanditGetNActions(), SCIPerrorMessage, SCIPrandomSetSeed(), and SCIP_Bandit::vtable.

Referenced by SCIPbanditCreate(), and SCIPresetBandit().

◆ SCIPbanditGetData()

SCIP_BANDITDATA* SCIPbanditGetData ( SCIP_BANDIT * bandit )

get data of this bandit algorithm

Parameters

bandit bandit algorithm data structure

Definition at line 190 of file bandit.c.

References SCIP_Bandit::data, and NULL.

Referenced by SCIP_DECL_BANDITFREE(), SCIP_DECL_BANDITRESET(), SCIP_DECL_BANDITSELECT(), SCIP_DECL_BANDITUPDATE(), SCIPgetConfidenceBoundUcb(), SCIPgetProbabilityExp3(), SCIPgetStartPermutationUcb(), SCIPgetWeightsEpsgreedy(), SCIPsetBetaExp3(), SCIPsetEpsilonEpsgreedy(), and SCIPsetGammaExp3().

◆ SCIPbanditSetData()

void SCIPbanditSetData	(	SCIP_BANDIT *	bandit,
		SCIP_BANDITDATA *	banditdata
	)

set the data of this bandit algorithm

Parameters

bandit	bandit algorithm data structure
banditdata	bandit algorihm specific data, or NULL

Definition at line 200 of file bandit.c.

References SCIP_Bandit::data, and NULL.

Referenced by SCIP_DECL_BANDITFREE().

◆ SCIPbanditvtableCreate()

SCIP_RETCODE SCIPbanditvtableCreate	(	SCIP_BANDITVTABLE **	banditvtable,
		const char *	name,
		SCIP_DECL_BANDITFREE((*banditfree))	,
		SCIP_DECL_BANDITSELECT((*banditselect))	,
		SCIP_DECL_BANDITUPDATE((*banditupdate))	,
		SCIP_DECL_BANDITRESET((*banditreset))
	)