1    	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
2    	/*                                                                           */
3    	/*                  This file is part of the program and library             */
4    	/*         SCIP --- Solving Constraint Integer Programs                      */
5    	/*                                                                           */
6    	/*  Copyright (c) 2002-2023 Zuse Institute Berlin (ZIB)                      */
7    	/*                                                                           */
8    	/*  Licensed under the Apache License, Version 2.0 (the "License");          */
9    	/*  you may not use this file except in compliance with the License.         */
10   	/*  You may obtain a copy of the License at                                  */
11   	/*                                                                           */
12   	/*      http://www.apache.org/licenses/LICENSE-2.0                           */
13   	/*                                                                           */
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15   	/*  distributed under the License is distributed on an "AS IS" BASIS,        */
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18   	/*  limitations under the License.                                           */
19   	/*                                                                           */
20   	/*  You should have received a copy of the Apache-2.0 license                */
21   	/*  along with SCIP; see the file LICENSE. If not visit scipopt.org.         */
22   	/*                                                                           */
23   	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
24   	
25   	/**@file   struct_bandit.h
26   	 * @ingroup INTERNALAPI
27   	 * @brief  data structures for bandit selection algorithms
28   	 * @author Gregor Hendel
29   	 */
30   	
31   	/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
32   	
33   	#ifndef __SCIP_STRUCT_BANDIT_H__
34   	#define __SCIP_STRUCT_BANDIT_H__
35   	
36   	
37   	#include "scip/def.h"
38   	#include "misc.h"
39   	#include "scip/type_clock.h"
40   	#include "scip/type_bandit.h"
41   	
42   	#ifdef __cplusplus
43   	extern "C" {
44   	#endif
45   	
46   	/** virtual function table for bandit selection algorithms */
47   	struct SCIP_BanditVTable
48   	{
49   	   const char*           name;               /**< name of the represented bandit algorithm */
50   	   SCIP_DECL_BANDITFREE  ((*banditfree));    /**< callback to free bandit specific data structures */
51   	   SCIP_DECL_BANDITSELECT((*banditselect));  /**< selection callback for bandit selector */
52   	   SCIP_DECL_BANDITUPDATE((*banditupdate));  /**< update callback for bandit algorithms */
53   	   SCIP_DECL_BANDITRESET ((*banditreset));   /**< update callback for bandit algorithms */
54   	};
55   	
56   	/** data structure for bandit algorithms */
57   	struct SCIP_Bandit
58   	{
59   	   SCIP_BANDITVTABLE*    vtable;             /**< virtual function table for callbacks */
60   	   SCIP_RANDNUMGEN*      rng;                /**< random number generator for randomized selection */
61   	   int                   nactions;           /**< the number of actions to select from */
62   	   SCIP_BANDITDATA*      data;               /**< specific data for bandit algorithm implementations */
63   	};
64   	#ifdef __cplusplus
65   	}
66   	#endif
67   	
68   	#endif
69