geturltermfreqs.h

C编写的用来实现search engine的推荐功能

/**
 * getUrlTermFreqs.h
 * API for get terms from urls
 * zhiyong, zhang, March, 1st, 2006
 **/
#ifndef GET_URL_TERMFREQS_H
#define GET_URL_TERMFREQS_H

#define FORGETTING_FACTOR 1  //not current visit link in the session, freq will be divided by this number
#define MAX_TERMS_PER_PAGE 100  //for merger purpose, doubled, infact one page extract half this number
typedef struct {
	char term[50];
	int freq;
} TERM_ITEM;
typedef struct {
	int termNum;
	TERM_ITEM terms[MAX_TERMS_PER_PAGE];
} PAGE_TERMS;

#ifdef __cplusplus
extern "C" {
#endif
/**
 * get terms from by url link
 **/
int getPageTerms(char *link, PAGE_TERMS *terms, char *gdbmFname);


/**
 * merge page terms and output result in term frequency order
 **/
int mergePageTerms(PAGE_TERMS *terms1, PAGE_TERMS *terms2);

/**
 * get the page similarity
 **/
double getPageSimlarity(char *link1, char *link2, char *gdbmFname);

#ifdef __cplusplus
}
#endif

#endif