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Fuzzy Urban Sets: Theory and Application to Desakota Regions in China

Eric J. Heikkila, Ti-yan Shen and Kai-zhong Yang
This paper outlines a method for using the mathematics of fuzzy sets that is well suited to measure and characterize peri-urbanizing ("desakota") systems typical of China, Southeast Asia, and other areas experiencing rapid urbanization. Drawing on Kosko's "fuzzy hypercube", three distinct but interdependent measures are derived: (i) extent of urbanization, (ii) level of fuzziness, and (iii) degree of entropy. The feasibility of the proposed method is demonstrated using remote sensing data for Ningbo, China.