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» On the Complexity of Universal Programs
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PODS
2007
ACM
171views Database» more  PODS 2007»
16 years 4 months ago
The complexity of reasoning about pattern-based XML schemas
In a recent paper, Martens et al. introduced a specification mechanism for XML tree languages, based on rules of the form r s, where r, s are regular expressions. Sets of such ru...
Gjergji Kasneci, Thomas Schwentick
TIT
2010
122views Education» more  TIT 2010»
14 years 11 months ago
Biological information as set-based complexity
The significant and meaningful fraction of all the potential information residing in the molecules and structures of living systems is unknown. Sets of random molecular sequences o...
David J. Galas, Matti Nykter, Gregory W. Carter, N...
APAL
2006
64views more  APAL 2006»
15 years 4 months ago
What can be efficiently reduced to the Kolmogorov-random strings?
We investigate the question of whether one can characterize complexity classes (such as PSPACE or NEXP) in terms of efficient reducibility to the set of Kolmogorovrandom strings R...
Eric Allender, Harry Buhrman, Michal Koucký
ACTA
2004
97views more  ACTA 2004»
15 years 4 months ago
Past is for free: on the complexity of verifying linear temporal properties with past
We study the complexity of satisfiability and model-checking of the linear-time temporal logic with past (pltl). More precisely, we consider several fragments of pltl, depending o...
Nicolas Markey
ESEM
2009
ACM
15 years 10 months ago
Modifiability measurement from a task complexity perspective: A feasibility study
Despite the critical role of software modifiability, it has no universally accepted measurement model. Measuring modifiability in terms of maintenance effort is problematic becaus...
Lulu He, Jeffrey C. Carver