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- W2371784577 abstract "Spatial topological relations are the hotspot for GIS studies.We introduced rough set theory on the basis of overall analysis of area object topological relations in this text.We took area object of RCC model as equivalence class of Pawlak rough set,when not considering boundary fuzziness and boundary itself,the expressing model of those relations is identical with RCC model.We introduced β most contain factor in the variable precision rough set,and took X as x,Y as X,then X can be expressed as β lower approximation for Y in TPP(X,Y) and NTPP(X,Y) model without considering boundary fuzziness and boundary itself,and Y can be expressed as β lower approximation for X in TPPI(X,Y) and NTPPI(X,Y) model.X is certainly belong to β lower approximation for Y and Y is certainly belong to β lower approximation for X in EQ(X,Y) model.X is possibly belong to β lower approximation for Y and Y is possibly belong to β lower approximation for X in EC(X,Y) model.X is certainly not belong to β lower approximation for Y and Y is certainly not belong to β lower approximation for X in DC(X,Y) model.and these relations are particular case for β=0 in the variable precision rough set.There are common intersect parts of two area objects in PO(X,Y) model,via X∩Y≠φ,then we can divide two area objects into β coefficient including and β coefficient separation by the proportion of the two area objects.So,when the common elemental constituent of X and Y is greater than 50% of X(C(X,Y)≤β),We can obviously get conclusion for Y■X.Therefore,we reach a conclusion that the two area objects of PO(X,Y) have two set expressions Y■X and Y■X in the variable precision rough set,and we mapped POI(X,Y) and PO(X,Y) figure of area object intersect relations in the variable precision rough set." @default.
- W2371784577 created "2016-06-24" @default.
- W2371784577 creator A5066130076 @default.
- W2371784577 date "2010-01-01" @default.
- W2371784577 modified "2023-09-27" @default.
- W2371784577 title "Study on Development of Topological Relations among Area Objects Based on Variable Precision Rough Set in GIS" @default.
- W2371784577 hasPublicationYear "2010" @default.
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