Table 2. Confusion table values to show the classification performance of probes with bit-scores ≤ 40 and probes with bit-score 111 when compared to the genome of S. aureus strain MRSA252 after applying the statistical procedure (P(absent|intensity) < 0.01) to raw data, data after sequence normalization and data after LOESS normalization.

	Raw data	Seq. norm	LOESS norm
True positives	30 282	30 284	30 284
False positives	601	82	629
True negatives	45 981	46 500	45 953
False negatives	69	67	67
True positive rate	0.9977	0.9978	0.9978
False positive rate	0.0129	0.0018	0.0135
True negative rate	0.9871	0.9982	0.9865
False negative rate	0.0023	0.0022	0.0022
Precision	0.9805	0.9973	0.9797
Accuracy	0.9913	0.9981	0.9910
Area under the curve	0.9997	0.9998	0.9997