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» Asymptotic classes of finite structures
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PODS
2004
ACM
158views Database» more  PODS 2004»
14 years 7 months ago
Composing Schema Mappings: Second-Order Dependencies to the Rescue
A schema mapping is a specification that describes how data structured under one schema (the source schema) is to be transformed into data structured under a different schema (the...
Ronald Fagin, Phokion G. Kolaitis, Lucian Popa, Wa...
ICDAR
2009
IEEE
14 years 2 months ago
Unsupervised Selection and Discriminative Estimation of Orthogonal Gaussian Mixture Models for Handwritten Digit Recognition
The problem of determining the appropriate number of components is important in finite mixture modeling for pattern classification. This paper considers the application of an unsu...
Xuefeng Chen, Xiabi Liu, Yunde Jia
JNS
2008
59views more  JNS 2008»
13 years 7 months ago
The Effect of Surface Tension on the Moore Singularity of Vortex Sheet Dynamics
We investigate the regularization of Moore's singularities by surface tension in the evolution of vortex sheets and its dependence on Weber number (which is inversely proport...
Francisco de la Hoz, M. A. Fontelos, L. Vega
ORDER
2006
128views more  ORDER 2006»
13 years 7 months ago
Algebras Defined from Ordered Sets and the Varieties they Generate
We investigate ways of representing ordered sets as algebras and how the order relation is reflected in the algebraic properties of the variety (equational class) generated by the...
Joel Berman, Willem J. Blok
VLDB
2002
ACM
97views Database» more  VLDB 2002»
13 years 7 months ago
Structural Function Inlining Technique for Structurally Recursive XML Queries
Structurally recursive XML queries are an important query class that follows the structure of XML data. At present, it is difficult for XQuery to type and optimize structurally re...
Chang-Won Park, Jun-Ki Min, Chin-Wan Chung