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SIGMOD
1999
ACM
181views Database» more  SIGMOD 1999»
13 years 11 months ago
Approximate Computation of Multidimensional Aggregates of Sparse Data Using Wavelets
Computing multidimensional aggregates in high dimensions is a performance bottleneck for many OLAP applications. Obtaining the exact answer to an aggregation query can be prohibit...
Jeffrey Scott Vitter, Min Wang
WWW
2006
ACM
14 years 8 months ago
Beyond XML and RDF: The Versatile Web Query Language Xcerpt
Applications and services that access Web data are becoming increasingly more useful and wide-spread. Current main-stream Web query languages such as XQuery, XSLT, or SPARQL, howe...
Sacha Berger, François Bry, Tim Furche, Ben...
CVPR
2010
IEEE
14 years 3 months ago
Sufficient Dimensionality Reduction for Visual Sequence Classification
When classifying high-dimensional sequence data, traditional methods (e.g., HMMs, CRFs) may require large amounts of training data to avoid overfitting. In such cases dimensional...
Alex Shyr, Raquel Urtasun, Michael Jordan
ER
2007
Springer
99views Database» more  ER 2007»
14 years 1 months ago
VERT: A Semantic Approach for Content Search and Content Extraction in XML Query Processing
Processing a twig pattern query in XML document includes structural search and content search. Most existing algorithms only focus on structural search. They treat content nodes th...
Huayu Wu, Tok Wang Ling, Bo Chen
PCM
2009
Springer
130views Multimedia» more  PCM 2009»
13 years 12 months ago
Image Quality Assessment Using Spatial Frequency Component
Image quality assessment (IQA) is a crucial technique in perceptual image/video coding, because it is not only a ruler for performance evaluation of coding algorithms but also a me...
Guangyao Cao, Luhong Liang, Siwei Ma, Debin Zhao