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MFDBS
1991
125views Database» more  MFDBS 1991»
15 years 1 months ago
A Relational Algebra for Complex Objects Based on Partial Information
We study an approach to relational databases which treats relations not as subsets of a Cartesian product but as subsets of some domain { a partially ordered space of descriptions...
Leonid Libkin
BIRTHDAY
2003
Springer
15 years 3 months ago
Digital Algebra and Circuits
Abstract. Digital numbers D are the world’s most popular data representation: nearly all texts, sounds and images are coded somewhere in time and space by binary sequences. The m...
Jean Vuillemin
HICSS
2010
IEEE
173views Biometrics» more  HICSS 2010»
15 years 4 months ago
Design and Evaluation of a Social Visualization Aimed at Encouraging Sustainable Behavior
The environment is affected by our collective behavior, yet many visualizations of energy saving behavior focus on personal actions, or simple, unidimensional comparisons between ...
Catherine Grevet, Jennifer Mankoff, Scott D. Ander...
ISSAC
1997
Springer
194views Mathematics» more  ISSAC 1997»
15 years 2 months ago
The Minimised Geometric Buchberger Algorithm: An Optimal Algebraic Algorithm for Integer Programming
IP problems characterise combinatorial optimisation problems where conventional numerical methods based on the hill-climbing technique can not be directly applied. Conventional me...
Qiang Li, Yike Guo, Tetsuo Ida, John Darlington
SIGMOD
1996
ACM
132views Database» more  SIGMOD 1996»
15 years 2 months ago
Cost-Based Optimization for Magic: Algebra and Implementation
Magic sets rewriting is a well-known optimization heuristic for complex decision-support queries. There can be many variants of this rewriting even for a single query, which diffe...
Praveen Seshadri, Joseph M. Hellerstein, Hamid Pir...