NDLI: Higher Order Vagueness in Geographical Information: Empirical Geographical Population of Type n Fuzzy Sets

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Higher Order Vagueness in Geographical Information: Empirical Geographical Population of Type n Fuzzy Sets

Content Provider	Springer Nature Link
Author	Fisher, Peter Cheng, Tao Wood, Jo
Copyright Year	2007
Abstract	Fuzzy set theory has been suggested as a means for representing vague spatial phenomena, and is widely known for directly addressing some of the issues of vagueness such as the sorites paradox. Higher order vagueness is widely considered a necessary component of any theory of vagueness, but it is not so well known that it too is competently modelled by Type n Fuzzy sets. In this paper we explore the fuzzy representation of higher order vagueness with respect to spatial phenomena. Initially we relate the arguments on philosophical vagueness to Type n Fuzzy sets. As an example, we move on to an empirical generation of spatial Type 2 Fuzzy sets examining the spatial extent of mountain peaks in Scotland. We show that the Type 2 Fuzzy sets can be populated by using alternative parameterisations of a peak detection algorithm. Further ambiguities could also be explored using other parameters of this and other algorithms. We show some novel answers to interrogations of the mountain peaks of Scotland. The conclusion of this work is that higher order vagueness can be populated for Type 2 and higher fuzzy sets. It does not follow that it is always necessary to examine these higher order uncertainties, but a possible advantage in terms of the results of spatial inquiry is demonstrated.
Starting Page	311
Ending Page	330
Page Count	20
File Format	PDF
ISSN	13846175
Journal	GeoInformatica
Volume Number	11
Issue Number	3
e-ISSN	15737624
Language	English
Publisher	Springer US
Publisher Date	2007-01-23
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	fuzzy sets mountains geomorphometry type 2 fuzzy sets vagueness uncertainty Multimedia Information Systems Information Storage and Retrieval Computer Science Data Structures, Cryptology and Information Theory Geographical Information Systems/Cartography
Content Type	Text
Resource Type	Article
Subject	Geography, Planning and Development Information Systems

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