hi, i hav a qs

[l2c]

hi , i and my frnd have been trying to implement apriori through set container class..

can some one plz tell me what is wrong with this code??

#include<set>
#include<iostream>
#include<conio.h>
#include<algorithm>
#include<vector>
using namespace std;
static const char filename[]="sample.txt";
FILE * fp=fopen(filename,"r");
typedef set<int> sample;
sample f[10][10];
sample c[10][10];
int a[10][10],t[10][10];
int i,j,k,count1[10],setcount[10];
float alpha,minsup[10];
vector<int> v(20);
vector<int>::iterator vit;
set<int> ::iterator it;
sample::iterator k1,k2,s1,s2;

void gen()
{ cout<<"in gen function"<<endl;
for(k=2;;k++)
if(!f[k-1][10].empty())
{ //cout<<"empty workin"<<endl;
for(i=1;i<=4;i++)
s1 = f[k-1][i].begin();//has to take the first element of first set of f[k-1]
while(s1!=f[k-1][i].end())
for(j = i+1 ;j<=5;j++)
{ //cout<<"within for"<<endl;
s2=f[k-1][j].begin();//take the next few elemts
k1=f[k-1][i].end();
k2=f[k-1][j].end();
//printf(" %d\t%d\n",*s1,*k1);
vit = set_intersection(s1,k1,s2,k2,v.begin());// find intersection
int elements=(int)(vit-v.begin());// find no of elemnets of intersection
printf("elements=%d\n",elements);
if(elements =(k-2))
{
vit=set_union(s1,k1,s2,k2,v.begin());
for(vit=v.begin();vit!=v.end();vit++)
{
//printf("%d\n",*vit);
c[k][j].insert(*vit);
}
}
}
}
for(k=2;f[k-1]!=NULL;k++)
{
sample ::iterator s;
for(j=1;j<=k;j++)
{
for(s=c[k][j].begin();s!=c[k][j].end();s++)
{
for(i=1;i<=5;i++)
{
s1=c[k][i].begin();
s2=c[k][j+1].begin();
k1=c[k][j].end();
k2=c[k][j+1].end();
vit=set_difference(s1,k1,s2,k2,v.begin());// repeat the above steps agn bt jus find the difference of two sets in ck tats al
for(vit=v.begin();vit!=v.end();vit++)
{
sample::iterator pt;
pt=search(f[k-1][j].begin(),f[k-1][j].end(),v.begin(),v.end());// search for the set if its present in f[k]
if(*pt<0)// if nt present erase tat set
{
c[k][j].erase(s);// pruning
setcount[*s]=0;
}
}
}
}
}
}
}
void read_calculate()
{

printf("in read_claculate\n");
if(fp!=NULL)
{
printf("file opened for reading\n");
for(i=1;i<=6;i++)
{
for(j=1;j<=5;j++)
{
fscanf(fp,"%d\t",&a[i][j]);
printf("%d\t",a[i][j]);
}
printf("\n");
}
}

else
printf("cannot open file");

printf("calculating value for t[i][j]\n");
for(i=1;i<=5;i++)
{
for(j=1;j<=6;j++)
{
t[i][j]=a[j][i];
printf("%d\t",t[i][j]);
}
printf("\n");
}
for(i=1;i<=6;i++)
{
count1[i]=0;
j=i;
for(k=1;k<=5;k++)
{
if(t[k][j]==1)
count1[i]++;
}
printf("count[%d]=%d\t",i,count1[i]);
//printf("%d\t",i);
minsup[i]=(float)count1[i]/5;
printf("minsup[%d]=%f\t",i,minsup[i]);
if(minsup[i]>=alpha)
{
f[1][i].insert(i);
setcount[1]++;
}

/*it=f[1][i].end();
while(it!=f[1][i].begin())
{cout<<*it++;
}
++it;
}
//printf("%d\n",setcount[1]);*/
gen();
}

}
void main()
{
printf("starting...............\n");
printf("enter the value for min sup(alpha):");
scanf("%f",&alpha);
//printf("calling initialisation().......\n");
//initialisation();
//printf("returned to main function\n");
printf("calling read_calculate()...............\n");
read_calculate();
getch();
}


-----------------------------------------------------------------------
sample.txt

1 0 0 1 1 1
0 1 1 0 0 1
1 1 0 0 1 1
1 0 0 0 0 0
--------------------------------------------------------------------------

it wud be a gr8 help!thanks

[coder777]

can some one plz tell me what is wrong with this code??

What's the code supposed to do?

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