1. A computer-implemented method for automatically adjusting a review rate score curve for detecting fraudulent transactions, the review rate score curve having a plurality of inflection points, the method comprises: performing, by a computer system, for each of the inflection points: receiving a time series representing a set of review rates at the inflection point over a predetermined duration; generating a set of output data comprising a trend review rate output, an integral delta output, and an derivative delta output based at least on the time series for the inflection point; and generating an updated inflection point based at least on the set of output data; and generating an updated review rate score curve based at least on the updated inflection points.