-/* $Id: rank1.c,v 1.10 2002-08-02 19:26:55 adam Exp $
- Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002
+/* $Id: rank1.c,v 1.17 2004-08-20 14:44:46 heikki Exp $
+ Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003
Index Data Aps
This file is part of the Zebra server.
#include <unistd.h>
#endif
+#define DEBUG_RANK 0
+
#include "index.h"
struct rank_class_info {
struct rank_term_info {
int local_occur;
- int global_occur;
+ zint global_occur;
int global_inv;
int rank_flag;
int rank_weight;
* create: Creates/Initialises this rank handler. This routine is
* called exactly once. The routine returns the class_handle.
*/
-static void *create (struct zebra_register *reg)
+static void *create (ZebraHandle zh)
{
struct rank_class_info *ci = (struct rank_class_info *)
xmalloc (sizeof(*ci));
- logf (LOG_DEBUG, "rank-1 create");
+ yaz_log (LOG_DEBUG, "rank-1 create");
return ci;
}
{
struct rank_class_info *ci = (struct rank_class_info *) class_handle;
- logf (LOG_DEBUG, "rank-1 destroy");
+ yaz_log (LOG_DEBUG, "rank-1 destroy");
xfree (ci);
}
struct rank_set_info *si = (struct rank_set_info *) xmalloc (sizeof(*si));
int i;
- logf (LOG_DEBUG, "rank-1 begin");
- si->no_entries = rset->no_rset_terms;
+#if DEBUG_RANK
+ yaz_log (LOG_LOG, "rank-1 begin");
+#endif
+ si->no_entries = 0; /* rset->no_rset_terms; */ /* FIXME - what to do here*/
+ /* Now that we don't count term occurrences, ranking will have to */
+ /* different! */
si->no_rank_entries = 0;
si->entries = (struct rank_term_info *)
xmalloc (sizeof(*si->entries)*si->no_entries);
for (i = 0; i < si->no_entries; i++)
{
- int g = rset->rset_terms[i]->nn;
- if (!strncmp (rset->rset_terms[i]->flags, "rank,", 5))
+ zint g = 0; /* rset->rset_terms[i]->nn; */ /* FIXME ??? */
+#if DEBUG_RANK
+ yaz_log(LOG_LOG, "i=%d flags=%s", i, rset->rset_terms[i]->flags);
+#endif
+ if (0) /* (!strncmp (rset->rset_terms[i]->flags, "rank,", 5)) */
+ /* FIXME */ /* ??? */
{
- yaz_log (LOG_LOG, "%s", rset->rset_terms[i]->flags);
+ const char *cp = "w";
+ /*= strstr(rset->rset_terms[i]->flags+4, ",w=");*/
+ /* FIXME ??? */
si->entries[i].rank_flag = 1;
- si->entries[i].rank_weight = atoi (rset->rset_terms[i]->flags+5);
- yaz_log (LOG_LOG, "i=%d weight=%d", i, si->entries[i].rank_weight);
+ if (cp)
+ si->entries[i].rank_weight = atoi (cp+3);
+ else
+ si->entries[i].rank_weight = 34;
+#if DEBUG_RANK
+ yaz_log (LOG_LOG, " i=%d weight=%d", i,
+ si->entries[i].rank_weight);
+#endif
(si->no_rank_entries)++;
}
else
si->entries[i].local_occur = 0;
si->entries[i].global_occur = g;
si->entries[i].global_inv = 32 - log2_int (g);
- logf (LOG_DEBUG, "-------- %d ------", 32 - log2_int (g));
+ yaz_log (LOG_DEBUG, " global_inv = %d g = " ZINT_FORMAT, (int) (32-log2_int (g)), g);
}
return si;
}
static void end (struct zebra_register *reg, void *set_handle)
{
struct rank_set_info *si = (struct rank_set_info *) set_handle;
- logf (LOG_DEBUG, "rank-1 end");
+ yaz_log (LOG_DEBUG, "rank-1 end");
xfree (si->entries);
xfree (si);
}
static void add (void *set_handle, int seqno, int term_index)
{
struct rank_set_info *si = (struct rank_set_info *) set_handle;
- /*logf (LOG_DEBUG, "rank-1 add seqno=%d term_index=%d", seqno, term_index);*/
+#if DEBUG_RANK
+ yaz_log (LOG_LOG, "rank-1 add seqno=%d term_index=%d", seqno, term_index);
+#endif
si->last_pos = seqno;
si->entries[term_index].local_occur++;
}
* score should be between 0 and 1000. If score cannot be obtained
* -1 should be returned.
*/
-static int calc (void *set_handle, int sysno)
+static int calc (void *set_handle, zint sysno)
{
int i, lo, divisor, score = 0;
struct rank_set_info *si = (struct rank_set_info *) set_handle;
if (!si->no_rank_entries)
return -1;
+#if DEBUG_RANK
+ yaz_log(LOG_LOG, "calc");
+#endif
for (i = 0; i < si->no_entries; i++)
+ {
+#if DEBUG_RANK
+ yaz_log(LOG_LOG, "i=%d rank_flag=%d lo=%d",
+ i, si->entries[i].rank_flag, si->entries[i].local_occur);
+#endif
if (si->entries[i].rank_flag && (lo = si->entries[i].local_occur))
score += (8+log2_int (lo)) * si->entries[i].global_inv *
si->entries[i].rank_weight;
+ }
divisor = si->no_rank_entries * (8+log2_int (si->last_pos/si->no_entries));
score = score / divisor;
- yaz_log (LOG_LOG, "sysno=%d score=%d", sysno, score);
+#if DEBUG_RANK
+ yaz_log (LOG_LOG, "sysno=" ZINT_FORMAT " score=%d", sysno, score);
+#endif
if (score > 1000)
score = 1000;
for (i = 0; i < si->no_entries; i++)