Voronoi diagrams—a survey of a fundamental geometric data structure
ACM Computing Surveys (CSUR)
Introduction to reasoning about cyclic intervals
IEA/AIE '99 Proceedings of the 12th international conference on Industrial and engineering applications of artificial intelligence and expert systems: multiple approaches to intelligent systems
Maintaining knowledge about temporal intervals
Communications of the ACM
Some Ways that Maps and Diagrams Communicate
Spatial Cognition II, Integrating Abstract Theories, Empirical Studies, Formal Methods, and Practical Applications
A System Handling RCC-8 Queries on 2D Regions Representable in the Closure algebra of Half-Planes
IEA/AIE '98 Proceedings of the 11th international conference on Industrial and engineering applications of artificial intelligence and expert systems: methodology and tools in knowledge-based systems
Qualitative Spatial Representation and Reasoning: An Overview
Fundamenta Informaticae - Qualitative Spatial Reasoning
Navigating by mind and by body
Spatial cognition III
Qualitative matching of spatial information
Proceedings of the 18th SIGSPATIAL International Conference on Advances in Geographic Information Systems
Qualitative analysis of sketched route maps: translating a sketch into linguistic descriptions
IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics
Interactive cartographic route descriptions
Geoinformatica
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Over the past years user-generated content has gained increasing importance in the area of geographic information science. Private citizens collect environmental data of their neighborhoods and publish it on the web. The wide success of volunteered geographic information relies on the simplicity of such systems. We propose to use sketch maps as a visual user interface, because sketch maps are intuitive, easy to produce for humans and commonly used in human-to-human communication. Sketch maps reflect users' spatial knowledge that is based on observations rather than on measurements. However, sketch maps, often considered as externalizations of cognitive maps, are distorted, schematized, incomplete, and generalized. Processing spatial information from sketch maps must therefore account for these cognitive aspects. In this paper, we suggest a set of qualitative spatial aspects that should be captured in representations of sketch maps and give empirical evidence that these spatial aspects are robust against typical schematizations and distortions in human spatial knowledge. We propose several existing qualitative spatial calculi to formally represent the spatial aspects, suggest appropriate methods for applying them, and evaluate the proposed representations for alignment of sketch maps and metric maps.