The P-median model, under a set of requirements for a given number and location and a set of candidate facility locations, finds suitable locations for P facilities respectively, and assigns each demand point to be served by a specific facility to minimize the sum of transportation costs between...
The p -median model locates facilities to provide optimal service to target populations. Where, for some reason, an inappropriate variable is used to stand in for a target population's demand, less than ideal facility systems can result. This effect is termed surrogation error. In this paper,...
gravity p-median modelTammy Drezner, Zvi Drezner*College of Business and Economics, California State University-Fullerton, Fullerton, CA 92834, United StatesReceived 15 December 2003; accepted 15 April 2005Available online 2 May 2006AbstractIn this paper we propose a new model for the p-median ...
,p-median,p-median .,p-median, ,p-medianp-median; ,. ;p-median;p-median; Applicationandvalidationofgravityp-medianmodelinfacility locationresearch TAOZhuolin 1,2 ,CHENGYang 1 ,DAITeqi 1 ,ZHENGQingjing 1 (1.SchoolofGeography,BeijingNormalUniversity,Beijing100875,China;2.CollegeofUrbanandEnvironme...
1.Thegravityp-medianmodel ConsidertheproblemofallocatingPfacilitiestoapopulationgeographicallydistributedinQ demandpointssuchthatthepopulation’saverageortotaldistancetoitsnearestfacilityisminimized (e.g.Hakimi1964,HandlerandMirchandani1979,andMirchandani1990).Thep-medianobjective functionis∑ min ∈ { } ∈ ,...
Location-allocation model is one of the best methods to find the optimal location of public service facilities. Traditional p-median model takes efficiency as a major criterion and applies the adjacency rule—that is, allocating the residents of every demand site to the closest facility, neglecting...
区位分配模型是设施选址研究中的重要方法,其中P-median模型是应用最广泛的一种.但传统P-median模型中每一需求点仅选择最近的那一个设施的假设具有一定局限性.重力P-median模型对此进行了重要改进,假设需求者根据距离和设施吸引力确定选择各个设施的概率.但目前学界关于重力P-median模型在实际应用中的有效性仍未达成一致...
在研究实例二中,研究人员在表格的标注中已经明确指出:Test for trend based on variable containing median value for each quintile。 在Ann Inter Med期刊(影响因子:21.32)2017年8月份发表的一篇文章《Association of Coffee Consumption With Total...
293_299 6Batta R.Leifer LEOn the Accuracy of Demand Point Solutions to the Planar Manhattan Metric p-Median Problem.Computers and Operations Research,1988,(15):253-262 7Triller DS,Gunther WD.Assessing Higllway Field Maintenance Office Locations by the p-Median Model.Transportation Research Record...
在研究实例二中,研究人员在表格的标注中已经明确指出:Test for trend based on variable containing median value for each quintile。 在Ann Inter Med期刊(影响因子:21.32)2017年8月份发表的一篇文章《Association of Coffee Consumption With Total and Cause-Specific Mortality Among Nonwhite Populations》中也提到:We...