Abstract data types and the development of data structures
Communications of the ACM
Using Hierarchical Spatial Data Structures for Hierarchical Spatial Reasoning
COSIT '97 Proceedings of the International Conference on Spatial Information Theory: A Theoretical Basis for GIS
Specifying Open GIS with Functional Languages
SSD '95 Proceedings of the 4th International Symposium on Advances in Spatial Databases
Generalizing Graphs Using Amalgamation and Selection
SSD '99 Proceedings of the 6th International Symposium on Advances in Spatial Databases
A Conceptual Model of Wayfinding Using Multiple Levels of Abstraction
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
Inductive graphs and functional graph algorithms
Journal of Functional Programming
A multiscale progressive model on virtual navigation
International Journal of Human-Computer Studies
Specifying essential features of street networks
COSIT'07 Proceedings of the 8th international conference on Spatial information theory
Adaptable path planning in regionalized environments
COSIT'09 Proceedings of the 9th international conference on Spatial information theory
Route instructions in map-based human-human and human-computer dialogue: A comparative analysis
Journal of Visual Languages and Computing
The effect of activity on relevance and granularity for navigation
COSIT'11 Proceedings of the 10th international conference on Spatial information theory
Modelling wayfinding in public transport: network space and scene space
SC'04 Proceedings of the 4th international conference on Spatial Cognition: reasoning, Action, Interaction
The cognitive benefits of dynamic representations in the acquisition of spatial navigation skills
Computers in Human Behavior
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Wayfinding in road networks is a hierarchical process. It involves a sequence of tasks, starting with route planning, continuing with the extraction of wayfinding instructions, and leading to the actual driving. From one task level to the next, the relevant road network becomes more detailed. How does the wayfinding process change? Building on a previous, informal hierarchical highway navigation model and on graph granulation theory, we are working toward a theory of granularity transformations for wayfinding processes. The paper shows the first results: a formal ontology of wayfinding at the planning level and an informal model of granularity mappings.