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SIGMOD
2003
ACM
141views Database» more  SIGMOD 2003»
14 years 9 months ago
QC-Trees: An Efficient Summary Structure for Semantic OLAP
Recently, a technique called quotient cube was proposed as a summary structure for a data cube that preserves its semantics, with applications for online exploration and visualiza...
Laks V. S. Lakshmanan, Jian Pei, Yan Zhao
CORR
2011
Springer
148views Education» more  CORR 2011»
13 years 22 days ago
Repetitive Reduction Patterns in Lambda Calculus with letrec (Work in Progress)
extended abstract we report on work in progress carried out within the framework of the NWO project Realising Optimal Sharing. Instead of discussing optimal reduction in the λ-cal...
Jan Rochel, Clemens Grabmayer
KBSE
2007
IEEE
14 years 3 months ago
Test suite reduction and prioritization with call trees
This paper presents a tool that (i) constructs tree-based models of a program’s behavior during testing and (ii) employs these trees while reordering and reducing a test suite. ...
Adam M. Smith, Joshua Geiger, Gregory M. Kapfhamme...
ICCS
2007
Springer
14 years 3 months ago
Hessian-Based Model Reduction for Large-Scale Data Assimilation Problems
Assimilation of spatially- and temporally-distributed state observations into simulations of dynamical systems stemming from discretized PDEs leads to inverse problems with high-di...
Omar Bashir, Omar Ghattas, Judith Hill, Bart G. va...
KONVENS
2000
14 years 16 days ago
A Noise Suppression System for the AMR Speech Codec
In this paper we describe a noise reduction preprocessing algorithm for the adaptive multirate (AMR) speech codec of the GSM system. The algorithm is based on spectral weighting a...
Peter Jax, Rainer Martin, Peter Vary, Marc Adrat, ...