Zipf’s law, named after the Harvard linguistic professor George Kingsley Zipf (1902-1950), is the observation that the frequency of occurrence of some event ( P ), as a function of the rank ( i) when the rank is determined by the above frequency of occurrence, is a power-law function Pi ~ 1/ia with the exponent a close to unity (1). Zipf’s law is a statistical observation that describes the freque
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