Yu, Tiffany Hui-Kuang; Wang, David Han-Min; Chen, Su-Jane - In: Physica A: Statistical Mechanics and its Applications 362 (2006) 2, pp. 471-479
The size of the ‘underground economy’ (UE) is valuable information in the formulation of macroeconomic and fiscal policy. This study applies fuzzy set theory and fuzzy logic to model Taiwan's UE over the period from 1960 to 2003. Two major factors affecting the size of the UE, the effective...