Sciweavers

2520 search results - page 63 / 504
» The complexity of approximating entropy
Sort
View
DCC
2011
IEEE
14 years 5 months ago
Accurate estimates of the data complexity and success probability for various cryptanalyses
Abstract Many attacks on encryption schemes rely on statistical considerations using plaintext/ciphertext pairs to find some information on the key. We provide here simple formula...
Céline Blondeau, Benoît Gérard...
WADS
2005
Springer
122views Algorithms» more  WADS 2005»
15 years 3 months ago
Parameterized Complexity of Generalized Vertex Cover Problems
Important generalizations of the Vertex Cover problem (Connected Vertex Cover, Capacitated Vertex Cover, and Maximum Partial Vertex Cover) have been intensively studied in terms of...
Jiong Guo, Rolf Niedermeier, Sebastian Wernicke
ISAAC
2001
Springer
98views Algorithms» more  ISAAC 2001»
15 years 2 months ago
Fragmentary Pattern Matching: Complexity, Algorithms and Applications for Analyzing Classic Literary Works
A fragmentary pattern is a multiset of non-empty strings, and it matches a string w if all the strings in it occur within w without any overlaps. We study some fundamental issues o...
Hideaki Hori, Shinichi Shimozono, Masayuki Takeda,...
COMPSAC
2004
IEEE
15 years 1 months ago
On the Complexity of Finding Emerging Patterns
Emerging patterns have been studied as a useful type of pattern for the diagnosis and understanding of diseases based on the analysis of gene expression profiles. They are useful ...
Lusheng Wang, Hao Zhao, Guozhu Dong, Jianping Li
DLT
2007
14 years 11 months ago
Inapproximability of Nondeterministic State and Transition Complexity Assuming P=!NP
Abstract. Inapproximability results concerning minimization of nondeterministic finite automata relative to given deterministic finite automata were obtained only recently, modul...
Hermann Gruber, Markus Holzer