Readings in qualitative reasoning about physical systems
Readings in qualitative reasoning about physical systems
Temporal reasoning based on semi-intervals
Artificial Intelligence
Qualitative representation of positional information
Artificial Intelligence
Maintaining knowledge about temporal intervals
Communications of the ACM
Modeling and Retrieval of Moving Objects
Multimedia Tools and Applications
Moving Objects Databases: Issues and Solutions
SSDBM '98 Proceedings of the 10th International Conference on Scientific and Statistical Database Management
Qualitative Velocity and Ball Interception
KI '02 Proceedings of the 25th Annual German Conference on AI: Advances in Artificial Intelligence
Calculi for Qualitative Spatial Reasoning
AISMC-3 Proceedings of the International Conference AISMC-3 on Artificial Intelligence and Symbolic Mathematical Computation
Integrated spatial reasoning in geographic information systems: combining topology and direction
Integrated spatial reasoning in geographic information systems: combining topology and direction
Similarity assessment for cardinal directions between extended spatial objects
Similarity assessment for cardinal directions between extended spatial objects
Qualitative Spatial Representation and Reasoning: An Overview
Fundamenta Informaticae - Qualitative Spatial Reasoning
GIS '06 Proceedings of the 14th annual ACM international symposium on Advances in geographic information systems
The qualitative trajectory calculus on networks
SC'06 Proceedings of the 2006 international conference on Spatial Cognition V: reasoning, action, interaction
Right-of-way rules as use case for integrating GOLOG and qualitative reasoning
KI'09 Proceedings of the 32nd annual German conference on Advances in artificial intelligence
Implementing a qualitative calculus to analyse moving point objects
Expert Systems with Applications: An International Journal
Inferring additional knowledge from QTCN relations
Information Sciences: an International Journal
Interpreting motion events of pairs of moving objects
Geoinformatica
Efficient storage of interactions between multiple moving point objects
OTM'06 Proceedings of the 2006 international conference on On the Move to Meaningful Internet Systems: AWeSOMe, CAMS, COMINF, IS, KSinBIT, MIOS-CIAO, MONET - Volume Part II
A qualitative trajectory calculus and the composition of its relations
GeoS'05 Proceedings of the First international conference on GeoSpatial Semantics
Plan recognition by program execution in continuous temporal domains
KI'12 Proceedings of the 35th Annual German conference on Advances in Artificial Intelligence
A fuzzy spatio-temporal-based approach for activity recognition
ER'12 Proceedings of the 2012 international conference on Advances in Conceptual Modeling
QRPC: A new qualitative model for representing motion patterns
Expert Systems with Applications: An International Journal
Hi-index | 12.05 |
Qualitative formalisms suited to express qualitative temporal or spatial relationships between entities, have gained wide acceptance as a useful way of abstracting from the real world. The question remains how to describe spatio-temporal concepts, such as the interaction between moving objects, adequately within a qualitative calculus and more specifically how to use this in expert systems. With this in mind, the Qualitative Trajectory Calculus (QTC) has been introduced. QTC enables comparisons between positions of objects at different time points to be made. By reducing the continuum to the qualitative values -, 0 and +, continuous movements can be described qualitatively. To illustrate the naturalness of QTC, the overtake event is studied. An overtake event is a typical example of objects moving in a particular domain and can become important, for example in the study of traffic engineering. A so-called conceptual animation is represented, being a sequence of QTC-relations, following the constraints imposed by qualitative reasoning. It is shown that different kinds of behaviour having certain common characteristics are reflected by the structure (e.g. symmetrical aspects) of the conceptual animations.