TY  - JOUR
PY  - 2017//
TI  - A two-step approach to planning new facilities towards equal accessibility
JO  - Environment and planning. B, urban analytics and city science
A1  - Li, Xiang
A1  - Wang, Fahui
A1  - Yi, Hong
SP  - 994
EP  - 1011
VL  - 44
IS  - 6
N2  - 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. <br><br>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.<p />  <p>Language: en</p>
LA  - en
SN  - 2399-8083
UR  - http://dx.doi.org/10.1177/0265813516657083
ID  - ref1
ER  -