“…For the sake of simplicity, let us consider only a two-dimensional representation vector and let two fuzzy sets of two sub-areas cover each axis (dimension). Then the given NFS model creates four fuzzy rules dividing the two-dimensional input space into a ''grid'' (in a broader sense) of four subareas with unsharp (fuzzy) boundaries [44]. Generally, if the input is a 𝐷-dimensional vector…”