Sciweavers

102 search results - page 5 / 21
» Better Algorithms and Bounds for Directed Maximum Leaf Probl...
Sort
View
JACM
2006
99views more  JACM 2006»
13 years 8 months ago
Finding a maximum likelihood tree is hard
Abstract. Maximum likelihood (ML) is an increasingly popular optimality criterion for selecting evolutionary trees [Felsenstein 1981]. Finding optimal ML trees appears to be a very...
Benny Chor, Tamir Tuller
CORR
2006
Springer
164views Education» more  CORR 2006»
13 years 8 months ago
Approximation Algorithms for Restricted Cycle Covers Based on Cycle Decompositions
A cycle cover of a graph is a set of cycles such that every vertex is part of exactly one cycle. An L-cycle cover is a cycle cover in which the length of every cycle is in the set ...
Bodo Manthey
APPROX
2000
Springer
153views Algorithms» more  APPROX 2000»
14 years 27 days ago
Randomized path coloring on binary trees
Motivated by the problem of WDM routing in all–optical networks, we study the following NP–hard problem. We are given a directed binary tree T and a set R of directed paths on ...
Vincenzo Auletta, Ioannis Caragiannis, Christos Ka...
ECRTS
2010
IEEE
13 years 8 months ago
Improved Tardiness Bounds for Global EDF
The Earliest Deadline First scheduling algorithm (EDF) is known to not be optimal under global scheduling on multiprocessor platforms. Results have been obtained that bound the ma...
Jeremy P. Erickson, UmaMaheswari Devi, Sanjoy K. B...
ICIP
1998
IEEE
14 years 24 days ago
Iterative Determination of Local Bound Constraints in Iterative Image Restoration
In this paper, the problem of how to better estimate spatially adaptive intensity bounds for image restoration is addressed. When the intensity bounds are estimated from a degrade...
Kaaren May, Tania Stathaki, Anthony G. Constantini...