hyper.h

来自「数据挖掘中的一算法 ines算法 c下实现的。适合初学习数据挖掘者借鉴」· C头文件 代码 · 共 65 行

/*----------------------------------------------------------------------
  File    : hyper.h
  Contents: hypertree management for simulated annealing
  Author  : Christian Borgelt
  History : 30.03.1997 file created as sian.c
            28.12.1999 redesign completed
            17.03.2002 hypertree functions made a separate module
----------------------------------------------------------------------*/
#ifndef __HYPER__
#define __HYPER__

/*----------------------------------------------------------------------
  Type Definitions
----------------------------------------------------------------------*/
typedef struct {                /* --- hyperedge --- */
  int   size;                   /* number of connected nodes */
  int   nodes[1];               /* vector of node identifiers */
} HEDGE;                        /* (hyperedge) */

typedef struct {                /* --- connected component --- */
  int   id;                     /* identifier of representative */
  int   cnt;                    /* number of represented nodes */
} HCOMP;                        /* (connected component) */

typedef struct {                /* --- hypertree --- */
  int   nodecnt;                /* number of nodes */
  int   *nodes;                 /* buffer for node identifiers */
  HCOMP *comps;                 /* connected components */
  int   hecnt;                  /* number of hyperedges */
  int   flags;                  /* flags, e.g. HT_FULL */
  HEDGE **buf;                  /* buffer for hyperedges */
  HEDGE *hedges[1];             /* vector of hyperedges */
} HTREE;                        /* (hypertree) */

/*----------------------------------------------------------------------
  Functions
----------------------------------------------------------------------*/
extern HTREE* ht_create  (int nodecnt);
extern void   ht_delete  (HTREE *ht);
extern HTREE* ht_dup     (HTREE *ht);

extern int    ht_nodecnt (HTREE *ht);
extern int    ht_hecnt   (HTREE *ht);
extern int    ht_headd   (HTREE *ht, int size, int *nodes);
extern int    ht_hesize  (HTREE *ht, int index);
extern int*   ht_henodes (HTREE *ht, int index);

extern int    ht_reduce  (HTREE *ht);
extern int    ht_fill    (HTREE *ht, int maxsz, double randfn (void));
extern HTREE* ht_modify  (HTREE *ht, int maxsz, double keep,
                          double randfn (void));
#ifndef NDEBUG
extern void   ht_show    (HTREE *ht);
#endif

/*----------------------------------------------------------------------
  Preprocessor Definitions
----------------------------------------------------------------------*/
#define ht_nodecnt(t)    ((t)->nodecnt)
#define ht_hecnt(t)      ((t)->hecnt)
#define ht_hesize(t,i)   ((t)->hedges[i]->size)
#define ht_henodes(t,i)  ((t)->hedges[i]->nodes)

#endif