1. A method for processing data, the method comprising the steps of: selecting a metric for determining substantially optimal combination of true positives and false positives in a data set; applying an optimization technique; and obtaining, from the results of the optimization technique, a value for at least one optimization parameter, said value for at least one optimization parameter resulting in substantially optimal combination of true positives and false positives; wherein a number of true positives and false positives are a function of at least one optimization parameter.