Temporal reasoning based on semi-intervals
Artificial Intelligence
Topological queries in spatial databases
PODS '96 Proceedings of the fifteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Maintaining knowledge about temporal intervals
Communications of the ACM
Reasoning About Distance Based on Fuzzy Sets
Applied Intelligence
A New Way to Query GISs on the Web
IEEE Software
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
Qualitative Spatial Representation and Reasoning: An Overview
Fundamenta Informaticae - Qualitative Spatial Reasoning
Usability evaluation of web-based GIS: case study
Proceedings of the 11th International Conference on Information Integration and Web-based Applications & Services
Spatial reasoning with rectangular cardinal relations
Annals of Mathematics and Artificial Intelligence
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To allow the immense volume of spatial data currently available to be used effectively, people need intelligent query tools that are simple and intuitive. Standard query tools have a number of serious usability limitations, as they often rely solely on numerical approaches when dealing with spatial information. The qualitative reasoning community has addressed this issue, by providing powerful formalisms based on the way that humans deal with spatial information, however, integrating these methods into numerical systems raises a number of new Computer-Human Interaction (CHI) problems. This paper addresses three key CHI challenges when combining qualitative and numerical methods: (1) managing the subjective, ambiguous nature of qualitative terms, (2) providing a powerful, yet simple query system, and (3) effectively visualising a complex, fuzzy qualitative query solution. A qualitative GIS called TreeSap is presented, which demonstrates that, with the use of CHI principles, query tools can be both powerful and accessible to non-expert users.