Sciweavers

TCS
2008
13 years 6 months ago
On the power of lookahead in on-line server routing problems
We study the usefulness of lookahead in online server routing problems: if an online algorithm is not only informed about the requests released so far, but also has a limited abil...
Luca Allulli, Giorgio Ausiello, Vincenzo Bonifaci,...
ALGORITHMICA
2005
84views more  ALGORITHMICA 2005»
13 years 6 months ago
Optimal Read-Once Parallel Disk Scheduling
An optimal prefetching and I/O scheduling algorithm L-OPT, for parallel I/O systems, using a read-once model of block references is presented. The algorithm uses knowledge of the n...
Mahesh Kallahalla, Peter J. Varman
IJFCS
2007
105views more  IJFCS 2007»
13 years 6 months ago
On the Existence of Lookahead Delegators for NFA
We investigate deterministically simulating (i.e., solving the membership problem for) nondeterministic finite automata (NFA), relying solely on the NFA’s resources (states and...
Bala Ravikumar, Nicolae Santean
AI
2010
Springer
13 years 7 months ago
When is it better not to look ahead?
In situations where one needs to make a sequence of decisions, it is often believed that looking ahead will help produce better decisions. However, it was shown 30 years ago that ...
Dana S. Nau, Mitja Lustrek, Austin Parker, Ivan Br...
IOPADS
1997
152views more  IOPADS 1997»
13 years 8 months ago
Competitive Parallel Disk Prefetching and Buffer Management
We provide a competitive analysis framework for online prefetching and buffer management algorithms in parallel I/O systems, using a read-once model of block references. This has ...
Rakesh D. Barve, Mahesh Kallahalla, Peter J. Varma...
FOSSACS
2010
Springer
13 years 10 months ago
Degrees of Lookahead in Regular Infinite Games
We study variants of regular infinite games where the strict alternation of moves between the two players is subject to modifications. The second player may postpone a move for a f...
Michael Holtmann, Lukasz Kaiser, Wolfgang Thomas
CAV
2006
Springer
91views Hardware» more  CAV 2006»
13 years 10 months ago
Lookahead Widening
We present lookahead widening, a novel technique for using existing widening and narrowing operators to improve the precision of static analysis. This technique is both self-contai...
Denis Gopan, Thomas W. Reps