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COSIT
1999
Springer
189views GIS» more  COSIT 1999»
15 years 9 months ago
A Formal Model of the Process of Wayfinding in Built Environments
Previous recent research on human wayfinding has focused primarily on mental representations rather than processes of wayfinding. This paper presents a formal model of some aspect...
Martin Raubal, Michael F. Worboys
CDC
2009
IEEE
110views Control Systems» more  CDC 2009»
15 years 2 months ago
Perturbation analysis and optimization of multiclass multiobjective Stochastic Flow Models
Stochastic Flow Models (SFMs) are stochastic ystems that abstract the dynamics of complex discrete event systems involving the control of sharable resources. SFMs have been used to...
Chen Yao, Christos G. Cassandras
DASFAA
2010
IEEE
166views Database» more  DASFAA 2010»
15 years 11 months ago
The Objects Interaction Matrix for Modeling Cardinal Directions in Spatial Databases
Abstract. Besides topological relations and approximate relations, cardinal directions have turned out to be an important class of qualitative spatial relations. In spatial databas...
Tao Chen, Markus Schneider, Ganesh Viswanathan, We...
CLIMA
2010
15 years 6 months ago
An Agent Language with Destructive Assignment and Model-Theoretic Semantics
In this paper we present an agent language that combines agent functionality with an action theory and model-theoretic semantics. The language is based on abductive logic programmi...
Robert A. Kowalski, Fariba Sadri
ICLP
2009
Springer
15 years 11 months ago
An Engine for Computing Well-Founded Models
The seemingly simple choice of whether to use call variance or call subsumption in a tabled evaluation deeply affects an evaluation’s properties. Most tabling implementations hav...
Terrance Swift