Research output: Contribution to journal › Article › peer-review
Parameterized Complexity of Superstring Problems. / Bliznets, Ivan; Fomin, Fedor V.; Golovach, Petr A.; Karpov, Nikolay; Kulikov, Alexander S.; Saurabh, Saket.
In: Algorithmica, Vol. 79, No. 3, 01.11.2017, p. 798-813.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Parameterized Complexity of Superstring Problems
AU - Bliznets, Ivan
AU - Fomin, Fedor V.
AU - Golovach, Petr A.
AU - Karpov, Nikolay
AU - Kulikov, Alexander S.
AU - Saurabh, Saket
PY - 2017/11/1
Y1 - 2017/11/1
N2 - In the Shortest Superstring problem we are given a set of strings S= { s1, … , sn} and integer ℓ and the question is to decide whether there is a superstring s of length at most ℓ containing all strings of S as substrings. We obtain several parameterized algorithms and complexity results for this problem. In particular, we give an algorithm which in time 2 O ( k )poly (n) finds a superstring of length at most ℓ containing at least k strings of S. We complement this by a lower bound showing that such a parameterization does not admit a polynomial kernel up to some complexity assumption. We also obtain several results about “below guaranteed values” parameterization of the problem. We show that parameterization by compression admits a polynomial kernel while parameterization “below matching” is hard.
AB - In the Shortest Superstring problem we are given a set of strings S= { s1, … , sn} and integer ℓ and the question is to decide whether there is a superstring s of length at most ℓ containing all strings of S as substrings. We obtain several parameterized algorithms and complexity results for this problem. In particular, we give an algorithm which in time 2 O ( k )poly (n) finds a superstring of length at most ℓ containing at least k strings of S. We complement this by a lower bound showing that such a parameterization does not admit a polynomial kernel up to some complexity assumption. We also obtain several results about “below guaranteed values” parameterization of the problem. We show that parameterization by compression admits a polynomial kernel while parameterization “below matching” is hard.
KW - Kernelization
KW - Parameterized complexity
KW - Shortest superstring
UR - http://www.scopus.com/inward/record.url?scp=84979980602&partnerID=8YFLogxK
U2 - 10.1007/s00453-016-0193-0
DO - 10.1007/s00453-016-0193-0
M3 - Article
AN - SCOPUS:84979980602
VL - 79
SP - 798
EP - 813
JO - Algorithmica
JF - Algorithmica
SN - 0178-4617
IS - 3
ER -
ID: 49820985