Planning Routes through uncertain territory
Artificial Intelligence
Representing and acquiring geographic knowledge
Representing and acquiring geographic knowledge
Iconic indexing by 2-D strings
IEEE Transactions on Pattern Analysis and Machine Intelligence
Principles of database and knowledge-base systems, Vol. I
Principles of database and knowledge-base systems, Vol. I
Invited talk: the design of pictorial databases based upon the theory of symbolic projections
SSD '90 Proceedings of the first symposium on Design and implementation of large spatial databases
Reasoning on space with object-centered knowledge representations
SSD '90 Proceedings of the first symposium on Design and implementation of large spatial databases
Qualitative spatial reasoning: a semi-quantitative approach using fuzzy logic
SSD '90 Proceedings of the first symposium on Design and implementation of large spatial databases
Symbolic and Geometric Connectivity Graph Methods for Route Planning in Digitized Maps
IEEE Transactions on Pattern Analysis and Machine Intelligence
Molecular scene analysis: crystal structure determination through imagery
Artificial intelligence and molecular biology
Representations for Rigid Solids: Theory, Methods, and Systems
ACM Computing Surveys (CSUR)
Maintaining knowledge about temporal intervals
Communications of the ACM
Language and Spatial Cognition
Language and Spatial Cognition
An Efficient Pictorial Database System for PSQL
IEEE Transactions on Software Engineering
An Intelligent Image Database System
IEEE Transactions on Software Engineering
Reasoning About Spatial Relationships in Picture Retrieval Systems
VLDB '94 Proceedings of the 20th International Conference on Very Large Data Bases
Reasoning about Binary Topological Relations
SSD '91 Proceedings of the Second International Symposium on Advances in Spatial Databases
Spatial Reasoning Using Symbolic Arrays
Proceedings of the International Conference GIS - From Space to Territory: Theories and Methods of Spatio-Temporal Reasoning on Theories and Methods of Spatio-Temporal Reasoning in Geographic Space
Counter-Intuitive Geographic ``Facts'': Clues for Spatial Reasoning at Geographic Scales
Proceedings of the International Conference GIS - From Space to Territory: Theories and Methods of Spatio-Temporal Reasoning on Theories and Methods of Spatio-Temporal Reasoning in Geographic Space
Using Orientation Information for Qualitative Spatial Reasoning
Proceedings of the International Conference GIS - From Space to Territory: Theories and Methods of Spatio-Temporal Reasoning on Theories and Methods of Spatio-Temporal Reasoning in Geographic Space
The Retrieval of Direction Relations using R-trees
DEXA '94 Proceedings of the 5th International Conference on Database and Expert Systems Applications
The database group at National Technical University of Athens (NTUA)
ACM SIGMOD Record
Topological relations in the world of minimum bounding rectangles: a study with R-trees
SIGMOD '95 Proceedings of the 1995 ACM SIGMOD international conference on Management of data
Hierarchical reasoning about direction relations
GIS '96 Proceedings of the 4th ACM international workshop on Advances in geographic information systems
STOC '98 Proceedings of the thirtieth annual ACM symposium on Theory of computing
Direction as a spatial object: a summary of results
Proceedings of the 6th ACM international symposium on Advances in geographic information systems
Assessing multimedia similarity: a framework for structure and motion
MULTIMEDIA '98 Proceedings of the sixth ACM international conference on Multimedia
Nonplanar topological inference and political-map graphs
Proceedings of the tenth annual ACM-SIAM symposium on Discrete algorithms
Binary string relations: a foundation for spatiotemporal knowledge representation
Proceedings of the eighth international conference on Information and knowledge management
A provably efficient computational model for approximate spatiotemporal retrieval
Proceedings of the 7th ACM international symposium on Advances in geographic information systems
Visual query and analysis tool of the object-relational GIS framework
Proceedings of the ninth international conference on Information and knowledge management
Processing object-oientation-based direction queries: a summary of results
Proceedings of the 8th ACM international symposium on Advances in geographic information systems
Cardinal relations between regions with a broad boundary
Proceedings of the 8th ACM international symposium on Advances in geographic information systems
Algorithms for Hierarchical Spatial Reasoning
Geoinformatica
An Object Model of Direction and Its Implications
Geoinformatica
An introduction to spatial database systems
The VLDB Journal — The International Journal on Very Large Data Bases - Spatial Database Systems
Object-Based Directional Query Processing in Spatial Databases
IEEE Transactions on Knowledge and Data Engineering
Algorithms for Querying by Spatial Structure
VLDB '98 Proceedings of the 24rd International Conference on Very Large Data Bases
Hierarchical Topological Inference on Planar Disc Maps
COCOON '00 Proceedings of the 6th Annual International Conference on Computing and Combinatorics
A reference framework for integrating multiple representations of geographical maps
GIS '03 Proceedings of the 11th ACM international symposium on Advances in geographic information systems
Cardinal directions between spatial objects: the pairwise-consistency problem
Information Sciences—Informatics and Computer Science: An International Journal
Views in Composite Web Services
IEEE Internet Computing
Exploring spatial datasets with histograms
Distributed and Parallel Databases
Modeling and querying uncertain spatial information for situational awareness applications
GIS '06 Proceedings of the 14th annual ACM international symposium on Advances in geographic information systems
IJCAI'95 Proceedings of the 14th international joint conference on Artificial intelligence - Volume 1
A corpus-based analysis of geometric constraints on projective prepositions
SigSem '07 Proceedings of the Fourth ACL-SIGSEM Workshop on Prepositions
Toward heterogeneous cardinal direction calculus
KI'09 Proceedings of the 32nd annual German conference on Advances in artificial intelligence
Information Sciences: an International Journal
Modeling ontological concepts of locations with a heterogeneous cardinal direction model
KSEM'10 Proceedings of the 4th international conference on Knowledge science, engineering and management
UMICS'04 Proceedings of the Second CAiSE conference on Ubiquitous Mobile Information and Collaboration Systems
Cardinal directions between complex regions
ACM Transactions on Database Systems (TODS)
Providing multi-scale consistency for multi-scale geospatial data
Proceedings of the 25th International Conference on Scientific and Statistical Database Management
Qualitative constraint satisfaction problems: An extended framework with landmarks
Artificial Intelligence
On quantifying qualitative geospatial data: a probabilistic approach
Proceedings of the Second ACM SIGSPATIAL International Workshop on Crowdsourced and Volunteered Geographic Information
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Various relation-based systems, concerned with the qualitative representation and processing of spatial knowledge, have been developed in numerous application domains. In this article, we identify the common concepts underlying qualitative spatial knowledge representation, we compare the representational properties of the different systems, and we outline the computational tasks involved in relation-based spatial information processing. We also describe symbolic spatial indexes, relation-based structures that combine several ideas in spatial knowledge representation. A symbolic spatial index is an array that preserves only a set of spatial relations among distinct objects in an image, called the modeling space; the index array discards information, such as shape and size of objects, and irrelevant spatial relations. The construction of a symbolic spatial index from an input image can be thought of as a transformation that keeps only a set of representative points needed to define the relations of the modeling space. By keeping the relative arrangements of the representative points in symbolic spatial indexes and discarding all other points, we maintain enough information to answer queries regarding the spatial relations of the modeling space without the need to access the initial image or an object database. Symbolic spatial indexes can be used to solve problems involving route planning, composition of spatial relations, and update operations.