private static void FuzzVelocityValue(ref DetectedAttributeValue targetDV, ref Random random)
{
double stdDev = targetDV.stdDev;
double VX = ((VelocityValue)((DetectedAttributeValue)targetDV).value).VX;
double VY = ((VelocityValue)((DetectedAttributeValue)targetDV).value).VY;
double VZ = ((VelocityValue)((DetectedAttributeValue)targetDV).value).VZ;
double r = random.NextDouble();// in [0,1]
double vx = ZInverse.FindZ(r);
r = random.NextDouble();
double vy = ZInverse.FindZ(r);
r = random.NextDouble();
double vz = ZInverse.FindZ(r);
//add noise to VX
((VelocityValue)((DetectedAttributeValue)targetDV).value).VX = (double)(vx * stdDev + VX);
//add noise toe VY
((VelocityValue)((DetectedAttributeValue)targetDV).value).VY = (double)(vy * stdDev + VY);
//add noise to VZ
((VelocityValue)((DetectedAttributeValue)targetDV).value).VZ = (double)(vz * stdDev + VZ);
//exit
//No: let smaller confidence be what chooses a value in ViewProtargetDV.confidence= 1/stdDev;
}
private static void FuzzLocationValue(ref DetectedAttributeValue targetDV, ref Random random)
{
double stdDev = targetDV.stdDev;
double X = ((LocationValue)((DetectedAttributeValue)targetDV).value).X;
double Y = ((LocationValue)((DetectedAttributeValue)targetDV).value).Y;
double Z = ((LocationValue)((DetectedAttributeValue)targetDV).value).Z;
double r = random.NextDouble();// in [0,1]
double x = ZInverse.FindZ(r);
r = random.NextDouble();// in [0,1]
double y = ZInverse.FindZ(r);
r = random.NextDouble();// in [0,1]
double z = ZInverse.FindZ(r);
//obfuscate X
((LocationValue)((DetectedAttributeValue)targetDV).value).X = (double)(x * stdDev + X);
//obfuscate Y
((LocationValue)((DetectedAttributeValue)targetDV).value).Y = (double)(y * stdDev + Y);
//obfuscate Z
((LocationValue)((DetectedAttributeValue)targetDV).value).Z = (double)(z * stdDev + Z);
//exit
// No: let smaller confidence be what chooses a value in ViewPro targetDV.stdDev = GetConfidence(Y) * 100;
}
private static void FuzzDoubleValue(ref DetectedAttributeValue targetDV, ref Random random)
{
// not called if stdDev=0
double stdDev = targetDV.stdDev;
double dblVal = ((DoubleValue)((DetectedAttributeValue)targetDV).value).value;
double r = random.NextDouble();// in [0,1]
double z = ZInverse.FindZ(r);
//add noise to double
((DoubleValue)((DetectedAttributeValue)targetDV).value).value = (double)(z * stdDev + dblVal);
//exit
// No: let smaller confidence be what chooses a value in ViewPro targetDV.confidence = 1 / stdDev;
}
