Changeset: 9a5cd0639996 for MonetDB
URL: http://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=9a5cd0639996
Modified Files:
monetdb5/extras/crackers/crackers_holistic.c
Branch: holindex
Log Message:
Add new function that changes the weight of a specific node according to the
second cost mode (w=frequency*distance).
diffs (25 lines):
diff --git a/monetdb5/extras/crackers/crackers_holistic.c
b/monetdb5/extras/crackers/crackers_holistic.c
--- a/monetdb5/extras/crackers/crackers_holistic.c
+++ b/monetdb5/extras/crackers/crackers_holistic.c
@@ -168,6 +168,21 @@ changeWeight_1(FrequencyNode* node,int N
return node->weight;
}
+/*this function updates the weights in the list in the second experiment (2nd
cost model)*/
+double
+changeWeight_2(FrequencyNode* node,int N,int L1)
+{
+ int p; /*number of pieces in the index*/
+ double Sp; /*average size of each piece*/
+ double d; /*distance from optimal piece(L1)*/
+ p = node->c;
+ Sp =((double)N)/p;
+ d = Sp - L1;
+ /*fprintf(stderr,"p=%d Sp=%lf d=%lf\n",p,Sp,d);*/
+ node->weight = (double)(node->f1) * d;
+ /*fprintf(stderr,"W=%lf\n",node->weight);*/
+ return node->weight;
+}
void
deleteNode(FrequencyNode* head,int bat_id)
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