Optimizing fuzzy p -hub center problem with generalized value-at-risk criterion
نویسندگان
چکیده
منابع مشابه
Optimizing a Fuzzy Green p-hub Centre Problem Using Opposition Biogeography Based Optimization
Hub networks have always been acriticalissue in locating health facilities. Recently, a study has been investigated by Cocking et al. (2006)in Nouna health district in Burkina Faso, Africa, with a population of approximately 275,000 people living in 290 villages served by 23 health facilities. The travel times of the population to health services become extremely high during the rainy season, s...
متن کاملStar p-hub center problem and star p-hub median problem with bounded path lengths
We consider two problems that arise in designing two-level star networks taking into account service quality considerations. Given a set of nodes with pairwise traffic demand and a central hub, we select p hubs and connect them to the central hub with direct links and then we connect each nonhub node to a hub. This results in a star/star network. In the first problem, called the Star p-hub Cent...
متن کاملThe p-hub center allocation problem
The p-hub center problem is to locate p hubs and to allocate non-hub nodes to hub nodes such that the maximum travel time (or distance) between any origin–destination pair is minimized. We address the p-hub center allocation problem, a subproblem of the location problem, where hub locations are given. We present complexity results and IP formulations for several versions of the problem. We esta...
متن کاملModeling fuzzy capacitated p-hub center problem and a genetic algorithm solution
Article history: Received 28 June 2011 Received in revised form 5 June 2012 Accepted 3 July 2012 Available online 16 August 2012
متن کاملOn the single-assignment p-hub center problem
We study the computational aspects of the single-assignment p-hub center problem on the basis of a basic model and a new model. The new model's performance is substantially better in CPU time than dierent linearizations of the basic model. We also prove the NP-Hardness of the problem. Ó 2000 Elsevier Science B.V. All rights reserved.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied Mathematical Modelling
سال: 2014
ISSN: 0307-904X
DOI: 10.1016/j.apm.2014.01.009