Comparing Rough Set Theory with Multiple Regression Analysis as Automated Valuation Methodologies

Abstract

This paper focuses on the problem of applying rough set theory to mass appraisal. This methodology was first introduced by a Polish mathematician, and has been applied recently as an automated valuation methodology by the author. The method allows the appraiser to estimate a property without defining econometric modeling, although it does not give any quantitative estimation of marginal prices. In a previous paper by the author, data were organized into classes prior to the valuation process, allowing for the if-then, or right ?rule? for each property class to be defined. In that work, the relationship between property and class of valued was said to be dichotomic.
 

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