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ECML
2007
Springer
16 years 28 days ago
Fast Optimization Methods for L1 Regularization: A Comparative Study and Two New Approaches
L1 regularization is effective for feature selection, but the resulting optimization is challenging due to the non-differentiability of the 1-norm. In this paper we compare state...
Mark Schmidt, Glenn Fung, Rómer Rosales
ODBIS
2007
Springer
127views Database» more  ODBIS 2007»
16 years 27 days ago
On RDF/S Ontology Evolution
Abstract. The algorithms dealing with the incorporation of new knowledge in an ontology (ontology evolution) often share a rather standard process of dealing with changes. This pro...
George Konstantinidis, Giorgos Flouris, Grigoris A...
TSD
2007
Springer
16 years 26 days ago
Constructing Empirical Models for Automatic Dialog Parameterization
Automatic classification of dialogues between clients and a service center needs a preliminary dialogue parameterization. Such a parameterization is usually faced with essential di...
Mikhail Alexandrov, Xavier Blanco, Natalia Ponomar...
GMP
2006
IEEE
108views Solid Modeling» more  GMP 2006»
16 years 24 days ago
Voxelization of Free-Form Solids Represented by Catmull-Clark Subdivision Surfaces
A voxelization technique and its applications for objects with arbitrary topology are presented. It converts a free-form object from its continuous geometric representation into a ...
Shuhua Lai, Fuhua (Frank) Cheng
ICMCS
2006
IEEE
108views Multimedia» more  ICMCS 2006»
16 years 24 days ago
Efficient Speaker Detection via Target Dependent Data Reduction
Systems designed to extract time-critical information from large volumes of unstructured data must include the ability, both from an architectural and algorithmic point of view, t...
Upendra V. Chaudhari, Olivier Verscheure, Juan Hue...