Relation Variables in Qualitative Spatial Reasoning
Abstract
Description
We study an alternative to the prevailing approach to modelling qualitative spatial reasoning (QSR) problems as constraint satisfaction problems. In the standard approach, a relation between objects is a constraint whereas in the alternative approach it is a variable. The relation-variable approach greatly simplifies integration and implementation of QSR. To substantiate this point, we discuss several QSR algorithms from the literature which in the relation-variable approach reduce to the customary constraint propagation algorithm enforcing generalised arc-consistency.
14 pages; 27th German Conference on Artificial Intelligence (KI'04)
14 pages; 27th German Conference on Artificial Intelligence (KI'04)