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ICDT
1999
ACM
97views Database» more  ICDT 1999»
15 years 10 months ago
Optimizing Large Join Queries in Mediation Systems
In data integration systems, queries posed to a mediator need to be translated into a sequence of queries to the underlying data sources. In a heterogeneous environment, with sour...
Ramana Yerneni, Chen Li, Jeffrey D. Ullman, Hector...
ICCAD
1997
IEEE
91views Hardware» more  ICCAD 1997»
15 years 10 months ago
Interconnect layout optimization under higher-order RLC model
In this paper, we study the interconnect layout optimization problem under a higher-order RLC model to optimize not just delay, but also waveform for RLC circuits with non-monoton...
Jason Cong, Cheng-Kok Koh
COLT
1997
Springer
15 years 10 months ago
Estimation of Time-Varying Parameters in Statistical Models: An Optimization Approach
Abstract. We propose a convex optimization approach to solving the nonparametric regression estimation problem when the underlying regression function is Lipschitz continuous. This...
Dimitris Bertsimas, David Gamarnik, John N. Tsitsi...
ICCAD
1994
IEEE
61views Hardware» more  ICCAD 1994»
15 years 10 months ago
Simultaneous driver and wire sizing for performance and power optimization
In this paper, we study the simultaneousdriver and wire sizing (SDWS) problem under two objective functions: (i) delay minimization only, or (ii) combined delay and power dissipat...
Jason Cong, Cheng-Kok Koh
VLDB
1994
ACM
114views Database» more  VLDB 1994»
15 years 10 months ago
Including Group-By in Query Optimization
In existing relational database systems, processing of group-by and computation of aggregate functions are always postponed until all joins are performed. In this paper, we presen...
Surajit Chaudhuri, Kyuseok Shim