public bool generateNegative(Clause pred)
{
int k = 0;
int t = 0;
int noOfClauseToCheck = 100;
ResolutionManager rm = new ResolutionManager();
// int negTresh = (int)(noOfClauseToCheck * noOfClauseToCheck / negatives.Count);
foreach (Literal c in negTrainSet)
{
if (rand.Next(negTrainSet.Count) < noOfClauseToCheck)
{
t++;
Clause p = pred.clone();
if (rm.checkCoverage(p, c))
{ // return true;
k++;
c.covered = true;
}
}
}
pred.negativeCoverage = (100.0 * k / t);
if (pred.negativeCoverage > negativeThreshold)
{
return(true);
}
return(false);
}
public void computeTestCoverage(Clause pred)
{
ResolutionManager rm = new ResolutionManager();
int pcount = 0;
int total = 0;
foreach (Literal c in testSet)
{
if (!c.covered)
{
Clause p = pred.clone();
total++;
if (rm.checkCoverage(p, c))
{
pcount++;
c.covered = true;
}
}
}
}
public double computeCoverage(Clause pred, bool mark, bool fast) // the min coverage assumed to be five
{
ResolutionManager rm = new ResolutionManager();
int pcount = 0;
int total = 0;
foreach (Literal c in trainSet)
{
Clause p = pred.clone();
total++;
if (rm.checkCoverage(p, c))
{
pcount++;
c.covered = true;
if (mark)
{
c.visited = true;
}
}
if (pcount > 5)
{
return(100.0 * pcount / total);
}
//TODO: change 104
// if (fast && total > 104)
// break;
}
double posCoverage = 0;
if (total == 0)
{
posCoverage = 0;
}
else
{
posCoverage = 100.0 * pcount / total;
}
pred.positiveCoverage = posCoverage;
return(posCoverage);
}
public void computeDetectionRate(ArrayList list, ref double recall, ref double precision, ref double fmeasure, ref double accuracy)
{
resetTestCoverage();
ResolutionManager rm = new ResolutionManager();
int P = 0;
double detected = 0;
//TODO: PARALLEL
Object[] cc = list.ToArray();
if (PARALLEL)
{
Parallel.For(0, list.Count, i =>
{
cnt++;
Clause p = (Clause)cc[i];
computeTestCoverage(p);
});
}
else
{
foreach (Clause p in list)
{
computeTestCoverage(p);
}
}
foreach (Literal c in testSet)
{
P++;
if (c.covered)
{
detected++;
}
}
//TODO: PARALLEL
int negCov = 0;
int N = 0;
foreach (Literal c in negTestSet)
{
N++;
foreach (Clause p in list)
{
Clause p2 = p.clone();
if (rm.checkCoverage(p2, c))
{
c.covered = true;
negCov++;
break;
}
}
}
//TP: detected. FP: negCov TN: N - FP, FN: P - TP
//prec = tp / (tp + fp)
//recall = tp / p
// precision = 100 - ( 100.0 * negCov / negatives.Count);
precision = 100.0 * detected / (detected + negCov);
recall = 100.0 * detected / P;
if (precision + recall == 0)
{
fmeasure = 0;
}
else
{
fmeasure = 2 * recall * precision / (precision + recall);
}
accuracy = 100.0 * (detected + N - negCov) / (N + P);
precision = Math.Round(precision, 2);
recall = Math.Round(recall, 2);
fmeasure = Math.Round(fmeasure, 2);
accuracy = Math.Round(accuracy, 2);
}