Research output: Contribution to journal › Article › peer-review
Faster subsequence recognition in compressed strings. / Tiskin, A.
In: Journal of Mathematical Sciences , Vol. 158, No. 5, 01.05.2009, p. 759-769.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Faster subsequence recognition in compressed strings
AU - Tiskin, A.
PY - 2009/5/1
Y1 - 2009/5/1
N2 - Computation on compressed strings is one of the key approaches to processing massive data sets. We consider local subsequence recognition problems on strings compressed by straight-line programs (SLP), which is closely related to Lempel-Ziv compression. For an SLP-compressed text of length, and an uncompressed pattern of length n, Cégielski et al. gave an algorithm for local subsequence recognition running in time O(mn2) . We improve the running time to O(mn1.5) . Our algorithm can also be used to compute the longest common subsequence between a compressed text and an uncompressed pattern in time O(m n1.5); the same problem with a compressed pattern is known to be NP-hard. Bibliography: 22 titles. © 2009 Springer Science+Business Media, Inc.
AB - Computation on compressed strings is one of the key approaches to processing massive data sets. We consider local subsequence recognition problems on strings compressed by straight-line programs (SLP), which is closely related to Lempel-Ziv compression. For an SLP-compressed text of length, and an uncompressed pattern of length n, Cégielski et al. gave an algorithm for local subsequence recognition running in time O(mn2) . We improve the running time to O(mn1.5) . Our algorithm can also be used to compute the longest common subsequence between a compressed text and an uncompressed pattern in time O(m n1.5); the same problem with a compressed pattern is known to be NP-hard. Bibliography: 22 titles. © 2009 Springer Science+Business Media, Inc.
UR - http://www.scopus.com/inward/record.url?scp=67349251202&partnerID=8YFLogxK
U2 - 10.1007/s10958-009-9396-0
DO - 10.1007/s10958-009-9396-0
M3 - Article
AN - SCOPUS:67349251202
VL - 158
SP - 759
EP - 769
JO - Journal of Mathematical Sciences
JF - Journal of Mathematical Sciences
SN - 1072-3374
IS - 5
ER -
ID: 127710042