Károly Héberger and Klára Kollár-Hunek Sum of ranking differences for method discrimination and its validation: comparison of ranks with random numbers Journal of Chemometrics 25
The theoretical background and algorithm are described for sum of ranking differences (SRD - a novel procedure of ordering, grouping of methods, models). The proximity of SRD values shows similarity of the methods, whereas large variation will imply dissimilarity. Validation of the SRD procedure can be carried out by using simulated random numbers for comparison (a permutation test called CRRN). The theoretical distribution is visualized; probabilities are calculated to SRD values showing whether they are far from being random.
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