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DASFAA
2006
IEEE
15 years 3 months ago
2006
IEEE
The DTD of a set of XML documents may change due to many reasons such as changes to the real world events, changes to the user’s requirements, and mistakes in the initial design....
ICDE
2006
IEEE
15 years 3 months ago
2006
IEEE
XML structural joins, which evaluate the containment (ancestor-descendant) relationships between XML elements, are important operations of XML query processing. Estimating structu...
COLT
2000
Springer
15 years 1 months ago
2000
Springer
We study model selection strategies based on penalized empirical loss minimization. We point out a tight relationship between error estimation and data-based complexity penalizatio...
SIGMOD
1997
ACM
15 years 1 months ago
1997
ACM
Computing multiple related group-bys and aggregates is one of the core operations of On-Line Analytical Processing (OLAP) applications. Recently, Gray et al. [GBLP95] proposed the...
PVLDB
2011
14 years 12 days ago
2011
Hadoop has become an attractive platform for large-scale data analytics. In this paper, we identify a major performance bottleneck of Hadoop: its lack of ability to colocate relat...