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Physical Sciences and Mathematics Commons™
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Full-Text Articles in Physical Sciences and Mathematics
Topological Augmentation: A Step Forward For Qualitative Partition Reasoning, Matthew P. Dube
Topological Augmentation: A Step Forward For Qualitative Partition Reasoning, Matthew P. Dube
Journal of Spatial Information Science
The current state of the art for partition based qualitative spatial reasoning systems such as the 9-intersection, 9+-intersection, direction relation matrix, and peripheral direction relations is that of the binary set intersection — either empty or non-empty — conveying the intersection (or lack thereof) of an object in the sets deriving the partition. While such representations are sufficient for topological components of objects, these representations are not sufficient for various tasks in qualitative spatial reasoning (composition, representation transfer, converse, etc.) regarding partitions as tiles. Topological augmentation expands the current binary status quo into a system of assigning topological relations between …
Twenty Years Of Progress: Giscience In 2010, Michael F. Goodchild
Twenty Years Of Progress: Giscience In 2010, Michael F. Goodchild
Journal of Spatial Information Science
It is 20 years since the term “geographic information science” was suggested to encompass the set of fundamental research issues that surround GIS. Two decades of GIScience have produced a range of accomplishments, in an expanding literature of research results as well as in the infrastructure of research. Several themes are suggested for future research, based both on gaps in what has been accomplished thus far, and on technology trends that will themselves raise research questions.