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» Using topology for spatial reasoning
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SEMWEB
2010
Springer
14 years 4 months ago
The role of space and time for knowledge organization on the Semantic Web
Space and time have not received much attention on the Semantic Web so far. While their importance has been recognized recently, existing work reduces them to simple latitude-longi...
Krzysztof Janowicz
ICIP
2002
IEEE
15 years 11 months ago
A spatiotemporal image sequence restoration algorithm
Temporal restoration of image sequences may fail because of erroneously estimated motion. Motion estimation failures may occur for several reasons: complicated motion, severe arte...
Andrei Rares, Marcel J. T. Reinders, Reginald L. L...
WIMOB
2009
IEEE
15 years 4 months ago
Exploiting RF-Scatter: Human Localization with Bistatic Passive UHF RFID-Systems
—In ubiquitous computing, localization of users in indoor environments is a challenging issue. On the one hand, localization data needs to have fine granularity to provide reaso...
Dominik Lieckfeldt, Jiaxi You, Dirk Timmermann
ESWS
2010
Springer
14 years 8 months ago
Modeling and Querying Metadata in the Semantic Sensor Web: The Model stRDF and the Query Language stSPARQL
Abstract. RDF will often be the metadata model of choice in the Semantic Sensor Web. However, RDF can only represent thematic metadata and needs to be extended if we want to model ...
Manolis Koubarakis, Kostis Kyzirakos
AI
2005
Springer
14 years 9 months ago
On the consistency of cardinal direction constraints
We present a formal model for qualitative spatial reasoning with cardinal directions utilizing a co-ordinate system. Then, we study the problem of checking the consistency of a se...
Spiros Skiadopoulos, Manolis Koubarakis