This paper investigates two aspects of using Fuzzy Logic with a GIS: The use of non-conventional aggregation operators for conjunctive and disjunctive reasoning and the use of weights when combining aggregates of different significance to the classification. Two methods of weighting are used, weights as powers of the membership functions, and the novel concept of membership functions that take ...

Traditionally, the classes in thematic maps have been treated as crisp sets, using classical set theory. In this formulation, map classes are assumed to be mutually exclusive and exhaustive. This approach limits the ability of thematic maps to represent the continuum of variation found in most landscapes. Substitution of fuzzy sets allows more  exibility for treatment of map classes in the are...

In this paper, we propose a novel approach to reason with spatial proximity. The approach is based on contextual information and uses a neurofuzzy classifier to handle the uncertainty aspect of proximity. Neurofuzzy systems are a combination of neural networks and fuzzy systems and incorporate the advantages of both techniques. Although fuzzy systems are focused on knowledge representation, the...

Our study falls under the perspective which aims at optimizing the quality of decision brought to the spacetime decision-making process. Our aim is to claim with an extensible, generic, deterministic and multicriterion model based on the axiomatic of models representing decision strategies and authorizing interaction between criteria. The suggested approach is constructive, interactive and base...

Spatial data lies at the heart of GIS research. The great strength of the spatial data is to query about the location and direction of spatial objects. This paper is to explore the possibilities and advantages of geo-spatial data to improve online apartment services. In order to support spatial querying in nature, a simple fuzzy query model is presented in the paper. An online spatial informati...

This paper presents the methodology developed for the SOLARGIS project a Joule project for the integration of renewable forms of energy for dispersed electricity production. The aim is to demonstrate the efficiency of GIS (Geographical Information Systems) as a toll for development of integration plans for renewable forms of energy. We present the methodologies for: renewable resources for in a...

We describe a new approach to representing vague or uncertain information concerning spatial location. Locational information about objects in information space is expressed through various anchoring relations which enable us to state exactly what is known regarding the spatial location of an object without forcing us to identify that location with either a precise region in the embedding space...

This paper presents a new hybrid learning algorithm for unsupervised classi cation tasks. We combined Fuzzy c-means learning algorithm and a supervised version of Minimerror to develop a hybrid incremental strategy allowing unsupervised classi cations. We applied this new approach to a real-world database in order to know if the information contained in unlabeled features of a Geographic Inform...

The concept of exurban is an example of a term likely to find its way into urban development ontologies. Many such terms are uncertain since there is no consensus of the exact definition of e.g. the boundary of exurbanization. In this research we focus on visualizing the spatial implications of the uncertainty in two existing definitions of exurban boundaries using empirical GIS data in Delawar...