The University of Arizona

SISTA Colloquium Details

Date: Monday, November 22, 2010

Time: 12:00 p.m.

Location: Gould-Simpson Bldg., Room 906
Light refreshments: 9th floor atrium area - 11:50 a.m.

Speaker: Daoqin Tong, Assistant Professor
School of Geography and Development
The University of Arizona

Title: Aggregation in Continuous Space Coverage Modeling


Abstract:  The study of geographic space representation has received much attention over decades in the field of spatial analysis. Continuous field-based and discrete object-based models have been well adopted for representing geographical phenomena in GIS (geographic information systems). When abstracting geographical reality in digital format, a perfect representation is unlikely due to an infinite number of points to record and store. A certain level of aggregation is often involved in the process. This study focuses on a discussion of errors/uncertainties associated with abstraction of geographical variation in facility coverage location modeling. A new approach is proposed to evaluate aggregation of continuous variation and to provide insights in selection of the appropriate aggregation schemes in real-world applications.