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|Title: ||A characterization of first-order topological properties of planar spatial data|
|Authors: ||Benedikt, Michael|
VAN DEN BUSSCHE, Jan
|Issue Date: ||2006|
|Citation: ||JOURNAL OF THE ACM, 53(2). p. 273-305|
|Abstract: ||Planar spatial datasets can be modeled by closed semi-algebraic sets in the plane. We establish a characterization of the topological properties of such datasets expressible in the relational calculus with real polynomial constraints. The characterization is in the form of a query language that can only point that can only talk about points in the set and the "cones" around these points.|
|ISI #: ||000237759500004|
|Type: ||Journal Contribution|
|Validation: ||ecoom, 2007|
|Appears in Collections: ||Research publications|
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