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» On Bounded Queries and Approximation
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PODS
2008
ACM
129views Database» more  PODS 2008»
14 years 8 months ago
Tree-width and functional dependencies in databases
Conjunctive query (CQ) evaluation on relational databases is NP-complete in general. Several restrictions, like bounded tree-width and bounded hypertree-width, allow polynomial ti...
Isolde Adler
SDM
2007
SIAM
81views Data Mining» more  SDM 2007»
13 years 10 months ago
A PAC Bound for Approximate Support Vector Machines
We study a class of algorithms that speed up the training process of support vector machines (SVMs) by returning an approximate SVM. We focus on algorithms that reduce the size of...
Dongwei Cao, Daniel Boley
STOC
2009
ACM
107views Algorithms» more  STOC 2009»
14 years 9 months ago
Efficient discrete-time simulations of continuous-time quantum query algorithms
The continuous-time query model is a variant of the discrete query model in which queries can be interleaved with known operations (called "driving operations") continuo...
Richard Cleve, Daniel Gottesman, Michele Mosca, Ro...
JANCL
2006
123views more  JANCL 2006»
13 years 8 months ago
Approximate databases: a support tool for approximate reasoning
This paper describes an experimental platform for approximate knowledge databases called the Approximate Knowledge Database (AKDB), based on a semantics inspired by rough sets. The...
Patrick Doherty, Martin Magnusson, Andrzej Szalas
ESA
2000
Springer
73views Algorithms» more  ESA 2000»
14 years 3 days ago
K-D Trees Are Better when Cut on the Longest Side
We show that a popular variant of the well known k-d tree data structure satisfies an important packing lemma. This variant is a binary spatial partitioning tree T defined on a set...
Matthew Dickerson, Christian A. Duncan, Michael T....