Detailed Description

internal methods for epsilon greedy bandit selection

Author: Gregor Hendel

#include "scip/scip.h"
#include "scip/bandit.h"

Functions
SCIP_RETCODE	SCIPincludeBanditvtableEpsgreedy (SCIP *scip)

	SCIP_DECL_BANDITFREE (SCIPbanditFreeEpsgreedy)

	SCIP_DECL_BANDITSELECT (SCIPbanditSelectEpsgreedy)

	SCIP_DECL_BANDITUPDATE (SCIPbanditUpdateEpsgreedy)

	SCIP_DECL_BANDITRESET (SCIPbanditResetEpsgreedy)

SCIP_RETCODE	SCIPbanditCreateEpsgreedy (BMS_BLKMEM blkmem, BMS_BUFMEM bufmem, SCIP_BANDITVTABLE vtable, SCIP_BANDIT epsgreedy, SCIP_Real priorities, SCIP_Real eps, int nactions, unsigned int initseed)

Function Documentation

◆ SCIPincludeBanditvtableEpsgreedy()

SCIP_RETCODE SCIPincludeBanditvtableEpsgreedy ( SCIP * scip )

creates the epsilon greedy bandit algorithm includes it in SCIP

Parameters

scip	SCIP data structure

Definition at line 291 of file bandit_epsgreedy.c.

References BANDIT_NAME, SCIP_CALL, SCIP_OKAY, and SCIPincludeBanditvtable().

Referenced by SCIPincludeCorePlugins().

◆ SCIP_DECL_BANDITFREE()

SCIP_DECL_BANDITFREE ( SCIPbanditFreeEpsgreedy )

callback to free bandit specific data structures

Definition at line 47 of file bandit_epsgreedy.c.

References BMSfreeBlockMemory, BMSfreeBlockMemoryArray, SCIP_OKAY, SCIPbanditGetData(), SCIPbanditGetNActions(), and SCIPbanditSetData().

◆ SCIP_DECL_BANDITSELECT()

SCIP_DECL_BANDITSELECT ( SCIPbanditSelectEpsgreedy )

selection callback for bandit algorithm

Definition at line 67 of file bandit_epsgreedy.c.

References SCIP_OKAY, SCIP_Real, SCIPbanditGetData(), SCIPbanditGetNActions(), SCIPbanditGetRandnumgen(), SCIPrandomGetInt(), SCIPrandomGetReal(), and sqrt().

◆ SCIP_DECL_BANDITUPDATE()

SCIP_DECL_BANDITUPDATE ( SCIPbanditUpdateEpsgreedy )

update callback for bandit algorithm

Definition at line 127 of file bandit_epsgreedy.c.

References SCIP_OKAY, and SCIPbanditGetData().

◆ SCIP_DECL_BANDITRESET()

SCIP_DECL_BANDITRESET ( SCIPbanditResetEpsgreedy )

reset callback for bandit algorithm

Definition at line 144 of file bandit_epsgreedy.c.

References DEFAULT_WEIGHT, SCIP_OKAY, SCIP_Real, SCIPbanditGetData(), and SCIPbanditGetNActions().

◆ SCIPbanditCreateEpsgreedy()

SCIP_RETCODE SCIPbanditCreateEpsgreedy	(	BMS_BLKMEM *	blkmem,
		BMS_BUFMEM *	bufmem,
		SCIP_BANDITVTABLE *	vtable,
		SCIP_BANDIT **	epsgreedy,
		SCIP_Real *	priorities,
		SCIP_Real	eps,
		int	nactions,
		unsigned int	initseed
	)

internal method to create and reset epsilon greedy bandit algorithm

Parameters

blkmem	block memory
bufmem	buffer memory
vtable	virtual function table with epsilon greedy callbacks
epsgreedy	pointer to store the epsilon greedy bandit algorithm
priorities	nonnegative priorities for each action, or NULL if not needed
eps	parameter to increase probability for exploration between all actions
nactions	the positive number of possible actions
initseed	initial random seed

Definition at line 208 of file bandit_epsgreedy.c.

References BMSallocBlockMemory, BMSallocBlockMemoryArray, eps, SCIP_ALLOC, SCIP_CALL, SCIP_OKAY, and SCIPbanditCreate().

Referenced by SCIPcreateBanditEpsgreedy().

SCIP