5 It represents a graded -and continuous -meausure of paradigmatic (ir-)regularity that considers, for each inflected form, the number of stem-sharing forms (or stem family size), instead of a dichotomous and formal classification of paradigms (regulars vs. irregulars).
given the number of inflected form-types for each paradigms, the average stem family size correlates better with the non-categorical idea of inflectional complexity.