Bridging vector and raster representation in GIS
Proceedings of the 6th ACM international symposium on Advances in geographic information systems
ACM SIGMOD Record
Spatial databases with application to GIS
Spatial databases with application to GIS
A Formal Definition of Binary Topological Relationships
FOFO '89 Proceedings of the 3rd International Conference on Foundations of Data Organization and Algorithms
Schematic Maps for Robot Navigation
Spatial Cognition II, Integrating Abstract Theories, Empirical Studies, Formal Methods, and Practical Applications
Consistent Queries over Cardinal Directions Across Different Levels of Detail
DEXA '00 Proceedings of the 11th International Workshop on Database and Expert Systems Applications
Integrated spatial reasoning in geographic information systems: combining topology and direction
Integrated spatial reasoning in geographic information systems: combining topology and direction
Composing cardinal direction relations
Artificial Intelligence
Qualitative Spatial Representation and Reasoning: An Overview
Fundamenta Informaticae - Qualitative Spatial Reasoning
A Qualitative Model for Visibility Relations
KI '07 Proceedings of the 30th annual German conference on Advances in Artificial Intelligence
Combining RCC-8 with qualitative direction calculi: algorithms and complexity
IJCAI'09 Proceedings of the 21st international jont conference on Artifical intelligence
On combinations of binary qualitative constraint calculi
IJCAI'09 Proceedings of the 21st international jont conference on Artifical intelligence
Qualitative spatial representation and reasoning in the SparQ-toolbox
SC'06 Proceedings of the 2006 international conference on Spatial Cognition V: reasoning, action, interaction
A qualitative approach to localization and navigation based on visibility information
COSIT'09 Proceedings of the 9th international conference on Spatial information theory
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We propose a hybrid geometric-qualitative spatial reasoning system that is able to simultaneously deal with input information that is partially given geometrically and partially qualitatively using spatial relations of different qualitative spatial calculi. The reasoning system combines a geometric reasoning component based on computational geometry methods with a qualitative reasoning component employing relation algebraic reasoning techniques. An egg-yolk representation approach is used to maintain information about objects with underdetermined geometry and also allows for vague objects in the input. In an experimental evaluation we apply the reasoning system to infer geometric information for a set of only qualitatively described objects. The experiments demonstrate that the hybrid reasoning approach produces better results than geometric and qualitative reasoning individually.