Improved Approximation Algorithm for k-level Uncapacitated Facility Location Problem (with Penalties)
نویسندگان
چکیده
منابع مشابه
An Approximation Algorithm for the -level Uncapacitated Facility Location Problem with Penalties
The -level Uncapacitated Facility Location (UFL) problem is a generalization of the UFL and the -median problems. A significant shortcoming of the classical UFL problem is that often a few very distant customers, known as outliers, can leave an undesirable effect on the final solution. This deficiency is considered in a new variant called UFL with outliers, in which, in contrast to the other pr...
متن کاملA 3-Approximation Algorithm for the k-Level Uncapacitated Facility Location Problem
In the k-level uncapacitated facility location problem, we have a set of demand points where clients are located. The demand of each client is known. Facilities have to be located at given sites in order to service the clients, and each client is to be serviced by a sequence of k different facilities, each of which belongs to a distinct level. There are no capacity restrictions on the facilitie...
متن کاملAn 0.828-approximation Algorithm for the Uncapacitated Facility Location Problem
The uncapacitated facility location problem in the following formulation is considered: max S⊆I Z(S) = ∑
متن کاملA 1.488 Approximation Algorithm for the Uncapacitated Facility Location Problem
We present a 1.488 approximation algorithm for the metric uncapacitated facility location (UFL) problem. The previous best algorithm was due to Byrka [1]. By linearly combining two algorithms A1(γf ) for γf = 1.6774 and the (1.11,1.78)-approximation algorithm A2 proposed by Jain, Mahdian and Saberi [8], Byrka gave a 1.5 approximation algorithm for the UFL problem. We show that if γf is randomly...
متن کاملApproximation algorithm for k-level hard capacitated facility location problem
In this paper, we consider k-level hard capacitated facility location problem.
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: Theory of Computing Systems
سال: 2014
ISSN: 1432-4350,1433-0490
DOI: 10.1007/s00224-014-9575-3