Fuzzy Reliability in Spatial Databases

Table 10

Weights assigned to the layers of each thematic dataset for the isoreliable zone O1.

Thematic dataset	Layer	Weight
(1) Aerial photogrammetric data	(1.1) Streets	4
	(1.2) Buildings	4
	(1.3) Spot elevations	3
	(1.4) Contours	3
(2) Cadastral data	(2.1) Terrain parcels	4
	(2.2) Buildings parcels	4
	(2.3) Land use	3
(3) Hydrology	(3.1) Rivers	3
	(3.2) Lakes	3
	(3.3) Aquifers	2
(4) Geology	(4.1) Surface geology	4
	(4.2) Land slides	3
	(4.3) Alluvial zones	3
(5) Infrastructural networks	(5.1) Road network	4
	(5.2) Drainage system	3
	(5.3) Water supply network	3
	(5.4) Electricity grid	2