Citation

Li X, Wang F, Yi H. Environ. Plan. B Urban Anal. City Sci. 2017; 44(6): 994-1011.

Copyright

(Copyright © 2017, SAGE Publishing)

DOI

10.1177/0265813516657083

PMID

unavailable

Abstract

A recent advancement in location-allocation modeling proposes a new objective of minimizing inequality of accessibility. Existing work considers the planning problem as either selecting new sites or adjusting facility capacities, separately. This paper develops a two-step hybrid approach to the problem by optimizing both locations and capacities of facilities towards equal accessibility. A genetic algorithm is first employed to find the best locations to site new facilities, and then a quadratic programming method is used to determine the best capacity of each facility within a pre-defined range. The sequence is consistent with many decision-making practices.

RESULTS of a series of experiments demonstrate that location optimization reduces inequality in accessibility more significantly than capacity optimization. The two-step optimization method can be applied for sequential allocation decision-makings towards maximum equal accessibility.

Language: en