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Title:
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POLITICAL DISTRICTING USING GEOSPATIAL INFORMATION SYSTEM |
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Author(s):
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F. Karimi, M. R. Delavar, M. A. Mostafavi |
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ISBN:
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978-972-8939-09-0 |
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Editors:
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Miguel Baptista Nunes, Pedro Isaías and Philip Powell |
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Year:
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2010 |
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Edition:
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Single |
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Keywords:
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GIS, Adaptive Multiplicatively Weighted Voronoi Diagram (AMWVD), Political Districting, Optimization |
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Type:
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Full Paper |
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First Page:
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299 |
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Last Page:
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306 |
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Language:
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English |
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Cover:
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Full Contents:
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click to dowload 
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Paper Abstract:
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The purpose of this paper is to develop a continuous locationdistricting Geospatial information System analysis applied to political districting problem to draw electoral district boundaries. Electoral district planning plays an important role in a political election, especially when a majority of voting rule is adopted, because it affects in the translation of votes into seats. The practice of gerrymandering can easily take place if the shape of electoral districts is not controlled. One of the GIS analysis that is used to divide a region into sub-regions is Voronoi Diagram. In this paper districting is done by combining a Voronoi diagram approach with an optimization algorithm, subject to some constraints. The most common constraints include integrity, contiguity, population, equality and compactness. Voronoi diagram procedures inherently guarantee that the integrity and contiguity criteria are always satisfied. The algorithms feature an iterative updating of the distances in order to balance district population as much as possible and satisfy compactness. The procedure is illustrated using real data from Tehran, capital of Iran. |
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