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VIS
2009
IEEE
216views Visualization» more  VIS 2009»
14 years 11 months ago
Volume Ray Casting with Peak Finding and Differential Sampling
Direct volume rendering and isosurfacing are ubiquitous rendering techniques in scientific visualization, commonly employed in imaging 3D data from simulation and scan sources. Con...
Aaron Knoll, Younis Hijazi, Rolf Westerteiger, ...
ICML
2006
IEEE
14 years 11 months ago
A DC-programming algorithm for kernel selection
We address the problem of learning a kernel for a given supervised learning task. Our approach consists in searching within the convex hull of a prescribed set of basic kernels fo...
Andreas Argyriou, Raphael Hauser, Charles A. Micch...
PODS
2009
ACM
122views Database» more  PODS 2009»
14 years 10 months ago
Satisfiability of downward XPath with data equality tests
In this work we investigate the satisfiability problem for the logic XPath( , , =), that includes all downward axes as well as equality and inequality tests. We address this probl...
Diego Figueira
KDD
2002
ACM
171views Data Mining» more  KDD 2002»
14 years 10 months ago
Mining complex models from arbitrarily large databases in constant time
In this paper we propose a scaling-up method that is applicable to essentially any induction algorithm based on discrete search. The result of applying the method to an algorithm ...
Geoff Hulten, Pedro Domingos
PODS
2004
ACM
139views Database» more  PODS 2004»
14 years 10 months ago
On Preservation under Homomorphisms and Unions of Conjunctive Queries
Unions of conjunctive queries, also known as select-project-join-union queries, are the most frequently asked queries in relational database systems. These queries are definable b...
Albert Atserias, Anuj Dawar, Phokion G. Kolaitis