Polynomial-time algorithms for regular set-covering and threshold synthesis
نویسندگان
چکیده
منابع مشابه
Polynomial-time algorithms for regular set-covering and threshold synthesis
A set-covering problem is called regular if a cover always remains a cover when any column in it is replaced by an earlier column. From the input of the problem the coefficient matrix of the set-covering inequalities it is possible to check in polynomial time whether the problem is regular or can be made regular by permuting the columns. If it is, then all the minimal covers are generated in po...
متن کاملAlgorithms for the Set Covering Problem
The Set Covering Problem SCP is a main model for several important applications including crew scheduling in railway and mass transit companies In this survey we focus our attention on the most recent and e ective algo rithms for SCP considering both heuristic and exact approaches outlining their main characteristics and presenting an experimental comparison on the test bed instances of Beasley...
متن کاملGreedy Algorithms For On-Line Set-Covering
We study on-line models for the set-covering problem in which items from a ground set arrive one by one and with any such item c, the list of names of sets that contain it in the final instance is also presented possibly together with some information regarding the content of such sets. A decision maker has to select which set, among the sets containing c, has to be put in the solution in order...
متن کاملHeuristic and exact algorithms for Generalized Bin Covering Problem
In this paper, we study the Generalized Bin Covering problem. For this problem an exact algorithm is introduced which can nd optimal solution for small scale instances. To nd a solution near optimal for large scale instances, a heuristic algorithm has been proposed. By computational experiments, the eciency of the heuristic algorithm is assessed.
متن کاملGreedy algorithms for on-line set-covering and related problems
We study the following on-line model for set-covering: elements of a ground set of size n arrive one-by-one and with any such element ci, arrives also the name of some set Si0 containing ci and covering the most of the uncovered ground set-elements (obviously, these elements have not been yet revealed). For this model we analyze a simple greedy algorithm consisting of taking Si0 into the cover,...
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: Discrete Applied Mathematics
سال: 1985
ISSN: 0166-218X
DOI: 10.1016/0166-218x(85)90040-x