hopf.h

hopfield 算法的实现与应用。附带demo演示

/*----------------------------------------------------------------------
  File    : hopf.h
  Contents: Hopfield network as associative memory
  Author  : Christian Borgelt
  History : 2002.12.01 file created from file xsom.c
----------------------------------------------------------------------*/
#ifndef __HOPFNET__
#define __HOPFNET__

/*----------------------------------------------------------------------
  Type Definitions
----------------------------------------------------------------------*/
typedef struct {                /* --- Hopfield network --- */
  int    width, height;         /* width and height of neuron grid */
  int    unitcnt;               /* number of neurons/units */
  int    curr;                  /* current unit to update */
  int    **wgts;                /* weight matrix */
  int    patcnt;                /* number of patterns */
  int    **pats;                /* stored patterns */
  int    *acts[1];              /* neuron activations */
} HOPFNET;                      /* (Hopfield network) */

/*----------------------------------------------------------------------
  Functions
----------------------------------------------------------------------*/
extern HOPFNET* hfn_create  (int width, int height);
extern void     hfn_delete  (HOPFNET *hfn);
extern int      hfn_width   (HOPFNET *hfn);
extern int      hfn_height  (HOPFNET *hfn);

extern void     hfn_init    (HOPFNET *hfn);
extern void     hfn_shuffle (HOPFNET *hfn, double randfn(void));
extern void     hfn_clear   (HOPFNET *hfn);
extern void     hfn_rand    (HOPFNET *hfn, double randfn(void));

extern void     hfn_actset  (HOPFNET *hfn, int x, int y, int act);
extern int      hfn_actget  (HOPFNET *hfn, int x, int y);
extern void     hfn_curr    (HOPFNET *hfn, int *x, int *y);
extern int      hfn_update  (HOPFNET *hfn, int x, int y);

extern int      hfn_patcnt  (HOPFNET *hfn);
extern int      hfn_patadd  (HOPFNET *hfn);
extern void     hfn_patrem  (HOPFNET *hfn, int index);
extern void     hfn_patget  (HOPFNET *hfn, int index);
extern int      hfn_patfind (HOPFNET *hfn);

extern int      hfn_save    (HOPFNET *hfn, FILE *file);
extern HOPFNET* hfn_load    (FILE *file);

/*----------------------------------------------------------------------
  Preprocessor Definitions
----------------------------------------------------------------------*/
#define hfn_width(h)        ((h)->width)
#define hfn_height(h)       ((h)->height)
#define hfn_patcnt(h)       ((h)->patcnt)

#define hfn_actget(h,x,y)   ((h)->acts[y][x])
#define hfn_actset(h,x,y,a) ((h)->acts[y][x] = (a))

#endif