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Grammar Efficiency of Parts-of-Speech Systems

Abstract Vulanović’s formula for calculating grammar efficiency is applied to 17 theoretically possible parts-of-speech systems. It is demonstrated that the formula represents grammar efficiency of parts-of-speech systems more adequately than the methods used in the theory of formal languages. Moreover, it is shown that the correlation between parts-of-speech system types and their grammar efficiency can be modeled by the 3-dimensional generalization of the sigmoid