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FCT
2003
Springer
15 years 12 months ago
On Exact and Approximation Algorithms for Distinguishing Substring Selection
Abstract. The NP-complete Distinguishing Substring Selection problem (DSSS for short) asks, given a set of “good” strings and a set of “bad” strings, for a solution string ...
Jens Gramm, Jiong Guo, Rolf Niedermeier
211
Voted
MFCS
2009
Springer
15 years 11 months ago
An Improved Approximation Bound for Spanning Star Forest and Color Saving
We present a simple algorithm for the maximum spanning star forest problem. We take advantage of the fact that the problem is a special case of complementary set cover and we adapt...
Stavros Athanassopoulos, Ioannis Caragiannis, Chri...
SIAMCOMP
2000
125views more  SIAMCOMP 2000»
15 years 6 months ago
Approximating the Stretch Factor of Euclidean Graphs
There are several results available in the literature dealing with efficient construction of t-spanners for a given set S of n points in Rd. t-spanners are Euclidean graphs in whic...
Giri Narasimhan, Michiel H. M. Smid
SAC
2009
ACM
16 years 1 months ago
The sum-of-increments constraint in the consecutive-ones matrix decomposition problem
The combinatorial problem of decomposing an integer matrix into a small positive linear combination of binary matrices that have the consecutive-ones property arises in cancer rad...
Sebastian Brand
FUIN
2008
80views more  FUIN 2008»
15 years 6 months ago
An Algorithmic Solution of a Birkhoff Type Problem
We give an algorithmic solution in a simple combinatorial data of Birkhoff s type problem studied in [14], for the category repft(I, K[t]/(tm)) of filtered I-chains of modules over...
Daniel Simson, Mariusz Wojewódzki