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- Jochen Renz, Bernhard Nebel
- IJCAI
- 1997
The computational properties of qualitative spatial reasoning have been investigated to some degree. However, the question for the boundary between polynomial and NP-hard reasoning problems has not… (More)
- Jochen Renz, Bernhard Nebel
- Handbook of Spatial Logics
- 2007
- Anthony G. Cohn, Jochen Renz
- Handbook of Knowledge Representation
- 2008
The need for spatial representations and spatial reasoning is ubiquitous in AI—from robot planning and navigation, to interpreting visual inputs, to understanding natural language—in all these cases… (More)
- Jochen Renz
- Lecture Notes in Computer Science
- 2002
One day, you will discover a new adventure and knowledge by spending more money. But when? Do you think that you need to obtain those all requirements when having much money? Why don't you try to get… (More)
- Gérard Ligozat, Jochen Renz
- PRICAI
- 2004
What is a qualitative calculus? Many qualitative spatial and temporal calculi arise from a set of JEPD (jointly exhaustive and pairwise disjoint) relations: a stock example is Allen’s calculus, which… (More)
- Bernhard Nebel, Jochen Renz
- J. Artif. Intell. Res.
- 2001
The theoretical properties of qualitative spatial reasoning in the RCC-8 framework have been analyzed extensively. However, no empirical investigation has been made yet. Our experiments show that the… (More)
- Jochen Renz
- KR
- 1998
Although the computational properties of the Region Connec tion CalculusRCC-8 are well studied, reasoning with RCC-8 entails several representational problems. This includes the problem of… (More)
- Jochen Renz
- IJCAI
- 1999
We present a general method for proving tractability of reasoning over disjunctions of jointly exhaustive and pairwise disjoint relations. Examples of these kinds of relations are Allen's temporal… (More)
- Jochen Renz, Gérard Ligozat
- CP
- 2005
It has now been clear for some time that for many qualitative spatial or temporal calculi, for instance the well-known RCC8 calculus, the operation of composition of relations which is used is… (More)
- Reinhard Moratz, Jochen Renz, Diedrich Wolter
- ECAI
- 2000
Representing and reasoning about orientation information is an important aspect of qualitative spatial reason ing. We present a novel approach for dealing with intrinsic orienta tion information by… (More)