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» Dimension-refined topological predicates
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DEXA
2004
Springer
161views Database» more  DEXA 2004»
15 years 2 months ago
Computing the Topological Relationship of Complex Regions
Topological predicates between spatial objects have always been a main area of research on spatial data handling, reasoning, and query languages. The focus of research has definit...
Markus Schneider
CORR
2010
Springer
106views Education» more  CORR 2010»
14 years 9 months ago
Spatial logics with connectedness predicates
Abstract. We consider quantifier-free spatial logics, designed for qualitative spatial representation and reasoning in AI, and extend them with the means to represent topological c...
Roman Kontchakov, Ian Pratt-Hartmann, Frank Wolter...
APAL
2006
73views more  APAL 2006»
14 years 9 months ago
Compactness in locales and in formal topology
If a locale is presented by a "flat site", it is shown how its frame can be presented by generators and relations as a dcpo. A necessary and sufficient condition is deri...
Steven J. Vickers
APAL
2010
141views more  APAL 2010»
14 years 9 months ago
Locatedness and overt sublocales
Locatedness is one of the fundamental notions in constructive mathematics. The existence of a positivity predicate on a locale, i.e. the locale being overt, or open, has proved to ...
Bas Spitters
KR
1994
Springer
15 years 1 months ago
An Ontology of Meta-Level Categories
We focus in this paper on some meta-level ontological distinctions among unary predicates, like those between concepts and assertional properties. Three are the main contributions...
Nicola Guarino, Massimiliano Carrara, Pierdaniele ...