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ICDE
2005
IEEE
113views Database» more  ICDE 2005»
16 years 4 months ago
On the Optimal Ordering of Maps and Selections under Factorization
The query optimizer of a database system is confronted with two aspects when handling user-defined functions (UDFs) in query predicates: the vast differences in evaluation costs b...
Thomas Neumann, Sven Helmer, Guido Moerkotte
TCSV
2010
14 years 10 months ago
Efficient Bit Allocation and Rate Control Algorithms for Hierarchical Video Coding
Hierarchical structure is a useful tool for providing the necessary scalability in adapting to the variety of channel environments. For schemes involving hierarchical picture struc...
Chan-Won Seo, Jung Won Kang, Jong-Ki Han, Truong Q...
VIIP
2001
15 years 4 months ago
Using Graphics Cards for Quantized FEM Computations
Graphics cards exercise increasingly more computing power and are highly optimized for high data transfer volumes. In contrast typical workstations perform badly when data exceeds...
Martin Rumpf, Robert Strzodka
TIT
2008
74views more  TIT 2008»
15 years 3 months ago
Optimal Parsing Trees for Run-Length Coding of Biased Data
Abstract-- We study coding schemes which encode unconstrained sequences into run-length-limited (d, k)-constrained sequences. We present a general framework for the construction of...
Sharon Aviran, Paul H. Siegel, Jack K. Wolf
CDC
2010
IEEE
167views Control Systems» more  CDC 2010»
14 years 10 months ago
Numerical methods for the optimization of nonlinear stochastic delay systems, and an application to internet regulation
The Markov chain approximation method is an effective and widely used approach for computing optimal values and controls for stochastic systems. It was extended to nonlinear (and p...
Harold J. Kushner