Contiguity-Based Optimization Models for Political Redistricting Problems
Contiguity-Based Optimization Models for Political Redistricting Problems
复制标题
政治选区重划问题的基于连续性的优化模型
DOI:
10.4018/ijagr.2017100101
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
N. Xiao
中科院分区:
文献类型:
--
作者:
M. Kim;N. Xiao
Politicalredistrictingisaprocessusedtoredrawpoliticalboundariesbasedonanumberofcriteria thatincludepopulationequality,minorityrepresentation,contiguity,andcompactness.Redistricting planscanbedifficulttodrawmanuallyandsincethe1970stheuseofcomputersinthecreationof redistrictingplanshasincreaseddramatically.Thepurposeofthispaperistoformulatetheproblemof findingredistrictingplansasoptimizationproblemsonthebasisofpopulationequalityandcontiguity. Theauthorsspecificallyaddresstheproblemfromthecontiguityperspective.Theydevelopedtwo exactoptimalmodels:onebasedonaminimumspanningtreeandonebasedonnetworkflows.They discussthespatialrepresentationandtheformulationofcontiguityforbothmodelsandcompare theperformanceofthesetwomodels,alongwithathirdmodeldevelopedintheliterature,usinga varietyofsyntheticandrealdata.Theauthors’resultsconfirmthatsuchaproblemiscomputationally intensive and more efficient methods are needed for large size problems, but with appropriate formulationapproachestheycanobtainusefulbaselinesolutionstotheseproblemswithrelatively smallsize.Theyalsofindthatmultipleoptimalsolutionswithdifferentspatialconfigurationsmay existforthesameproblem,whichpresentsanewchallengetothedevelopmentofsolutionmethods forpoliticalredistrictingproblems. KeywORdS Land Acquisition Problems, Political Redistricting Problems, Spatial Contiguity, Spatial Optimization, Strict Equal Population