private double distToTargetVAF(SNVEntry snv, SNVEntry targetSNV) {
		String tag = snv.getProfile();
		String targetTag = targetSNV.getProfile();
		double dist = 0;
		for(int i = 0; i < numSamples; i++) {
			if(targetTag.charAt(i) == '0' && tag.charAt(i) == '0' && !snv.evidenceOfPresence(i)) continue;
			double min = targetSNV.getVAF(i) < snv.getVAF(i) ? targetSNV.getVAF(i) : snv.getVAF(i);
			double max = targetSNV.getVAF(i) > snv.getVAF(i) ? targetSNV.getVAF(i) : snv.getVAF(i);
			if(min == 0) {
				min = 0.0001;
			}
			dist += min/max;
		}
		return dist;
	}