A method for adapting a detection algorithm developed for usage with data generated by a first system to data generated with a second system, the algorithm for fail safe diagnosis of irregularities including a first procedure of detecting irregularities with minimal type I errors and a second procedure of filtering out type II errors; the data generated including values for selected features characterizing the irregularities; the method including applying an intermediate step of linearly transposing the values of each selected feature generated by the first procedure, prior to applying the second procedure to those values.