Exact and approximation algorithms for geometric and capacitated set cover problems
(2012) 16th Annual International Conference, COCOON 2010 6196. p.295-310- Abstract
- First, we study geometric variants of the standard set cover motivated by assignment of directional antenna and shipping with deadlines, providing the first known polynomial-time exact solutions.
Next, we consider the following general (non-necessarily geometric) capacitated set cover problem. There is given a set of elements with real weights and a family of sets of the elements. One can use a set if it is a subset of one of the sets in the family and the sum of the weights of its elements is at most one. The goal is to cover all the elements with the allowed sets.
We show that any polynomial-time algorithm that approximates the uncapacitated version of the set cover problem with ratio r can be converted to an... (More) - First, we study geometric variants of the standard set cover motivated by assignment of directional antenna and shipping with deadlines, providing the first known polynomial-time exact solutions.
Next, we consider the following general (non-necessarily geometric) capacitated set cover problem. There is given a set of elements with real weights and a family of sets of the elements. One can use a set if it is a subset of one of the sets in the family and the sum of the weights of its elements is at most one. The goal is to cover all the elements with the allowed sets.
We show that any polynomial-time algorithm that approximates the uncapacitated version of the set cover problem with ratio r can be converted to an approximation algorithm for the capacitated version with ratio r + 1.357.
The composition of these two results yields a polynomial-time approximation algorithm for the problem of covering a set of customers represented by a weighted n-point set with a minimum number of antennas of variable angular range and fixed capacity with ratio 2.357. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1666081
- author
- Berman, Piotr ; Karpinski, Marek and Lingas, Andrzej LU
- organization
- publishing date
- 2012
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- Computing and Combinatorics / Lecture Notes in Computer Science
- volume
- 6196
- pages
- 295 - 310
- publisher
- Springer
- conference name
- 16th Annual International Conference, COCOON 2010
- conference dates
- 2010-07-19 - 2010-07-21
- external identifiers
-
- wos:000304695800006
- scopus:77955024653
- ISSN
- 0302-9743
- 1611-3349
- ISBN
- 978-3-642-14031-0
- DOI
- 10.1007/978-3-642-14031-0_26
- project
- VR 2008-4649
- language
- English
- LU publication?
- yes
- id
- d6d5a603-c96a-4372-b098-9b0c69ca7b1e (old id 1666081)
- date added to LUP
- 2016-04-01 10:56:34
- date last changed
- 2024-01-07 04:47:32
@inproceedings{d6d5a603-c96a-4372-b098-9b0c69ca7b1e,
abstract = {{First, we study geometric variants of the standard set cover motivated by assignment of directional antenna and shipping with deadlines, providing the first known polynomial-time exact solutions. <br/><br>
Next, we consider the following general (non-necessarily geometric) capacitated set cover problem. There is given a set of elements with real weights and a family of sets of the elements. One can use a set if it is a subset of one of the sets in the family and the sum of the weights of its elements is at most one. The goal is to cover all the elements with the allowed sets. <br/><br>
We show that any polynomial-time algorithm that approximates the uncapacitated version of the set cover problem with ratio r can be converted to an approximation algorithm for the capacitated version with ratio r + 1.357. <br/><br>
The composition of these two results yields a polynomial-time approximation algorithm for the problem of covering a set of customers represented by a weighted n-point set with a minimum number of antennas of variable angular range and fixed capacity with ratio 2.357.}},
author = {{Berman, Piotr and Karpinski, Marek and Lingas, Andrzej}},
booktitle = {{Computing and Combinatorics / Lecture Notes in Computer Science}},
isbn = {{978-3-642-14031-0}},
issn = {{0302-9743}},
language = {{eng}},
pages = {{295--310}},
publisher = {{Springer}},
title = {{Exact and approximation algorithms for geometric and capacitated set cover problems}},
url = {{http://dx.doi.org/10.1007/978-3-642-14031-0_26}},
doi = {{10.1007/978-3-642-14031-0_26}},
volume = {{6196}},
year = {{2012}},
}