Spatial Databases: Concepts of Spatial Similarity Relations with the View Point of Fuzzy Sets
نویسنده
چکیده
Fuzzy logic systems have played significant role in computer information system, specifically in quality, reliability and safety of databases and information retrieval. This work deals with theory of spatial databases, spatial data infrastructure and automated map generalizations in multi scale map spaces. We put forward the definitions of spatial similarity relation in automated map generalizations in the light of fuzzy sets and fuzzy logic. Then we present the properties of fuzzy spatial similarity relations. Finally a theoretical model is presented and discussed in details. This work may benefit the theory of automated map generalization, spatial reasoning, spatial data analysis and information retrieval. Keywordsfuzzy logic, fuzzy sets, information retrieval, multi-scale map spaces, spatial databases.
منابع مشابه
مدلسازی روابط توپولوژیک سه بعدی فازی در محیط GIS
Nowadays, geospatial information systems (GIS) are widely used to solve different spatial problems based on various types of fundamental data: spatial, temporal, attribute and topological relations. Topological relations are the most important part of GIS which distinguish it from the other kinds of information technologies. One of the important mechanisms for representing topological relations...
متن کاملTOPOLOGICAL SIMILARITY OF L-RELATIONS
$L$-fuzzy rough sets are extensions of the classical rough sets by relaxing theequivalence relations to $L$-relations. The topological structures induced by$L$-fuzzy rough sets have opened up the way for applications of topological factsand methods in granular computing. In this paper, we firstly prove thateach arbitrary $L$-relation can generate an Alexandrov $L$-topology.Based on this fact, w...
متن کاملPOWERSET OPERATORS OF EXTENSIONAL FUZZY SETS
Powerset structures of extensional fuzzy sets in sets with similarity relations are investigated. It is proved that extensional fuzzy sets have powerset structures which are powerset theories in the category of sets with similarity relations, and some of these powerset theories are defined also by algebraic theories (monads). Between Zadeh's fuzzy powerset theory and the classical powerset theo...
متن کاملFuzzy Sets Approach to Spatial Analysis and Planning - a Nontechnical Evaluation
Uncertainty in spatial analysis and planning has conventionally been treated as a consequence of random occurrence of exact spatial events. The present paper, however, argues that fuzziness is actually a major contributory factor to most of the uncertain spatial behavior. Exactitude in representing, analyzing, and predicting human behaviors over space and time is difficult if not impossible to ...
متن کاملSpatial justice in the age-friendly city index of Tehran
Background: World Health Organization has proposed age-friendly cities as an urban development approach. Likewise, the spatial distribution of urban facilities can be considered an important issue among urban planners. Method: In 2019, a sample of 770 elderly people was selected by the multi-stage sampling method. Data collection was accomplished using a standard questionnaire of the World Heal...
متن کامل