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» On generalized Frame-Stewart numbers
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MOC
2002
108views more  MOC 2002»
15 years 5 months ago
Convergence of the multigrid $V$-cycle algorithm for second-order boundary value problems without full elliptic regularity
The multigrid V -cycle algorithm using the Richardson relaxation scheme as the smoother is studied in this paper. For second-order elliptic boundary value problems, the contraction...
Susanne C. Brenner
300
Voted
ICDT
2009
ACM
150views Database» more  ICDT 2009»
16 years 6 months ago
Optimizing user views for workflows
A technique called user views has recently been proposed to focus user attention on relevant information in response to provenance queries over workflow executions [1, 2]: Given u...
Olivier Biton, Susan B. Davidson, Sanjeev Khanna, ...
HPCA
2004
IEEE
16 years 6 months ago
Out-of-Order Commit Processors
Modern out-of-order processors tolerate long latency memory operations by supporting a large number of inflight instructions. This is particularly useful in numerical applications...
Adrián Cristal, Daniel Ortega, Josep Llosa,...
STOC
2007
ACM
83views Algorithms» more  STOC 2007»
16 years 6 months ago
Lattices that admit logarithmic worst-case to average-case connection factors
We demonstrate an average-case problem that is as hard as finding (n)-approximate shortest vectors in certain n-dimensional lattices in the worst case, where (n) = O( log n). The...
Chris Peikert, Alon Rosen
DCC
2001
IEEE
16 years 5 months ago
Trellis Structure and Higher Weights of Extremal Self-Dual Codes
A method for demonstrating and enumerating uniformly efficient (permutation-optimal) trellis decoders for self-dual codes of high minimum distance is developed. Such decoders and c...
Houshou Chen, John T. Coffey