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» Runtime Optimization of Continuous Queries
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2003
ACM
15 years 6 months ago
Optimizing Reduction Computations In a Distributed Environment
We investigate runtime strategies for data-intensive applications that involve generalized reductions on large, distributed datasets. Our set of strategies includes replicated fi...
Tahsin M. Kurç, Feng Lee, Gagan Agrawal, &U...
BNCOD
2008
96views Database» more  BNCOD 2008»
15 years 2 months ago
Smooth Interpolating Histograms with Error Guarantees
Abstract. Accurate selectivity estimations are essential for query optimization decisions where they are typically derived from various kinds of histograms which condense value dis...
Thomas Neumann, Sebastian Michel
SIGMOD
2009
ACM
192views Database» more  SIGMOD 2009»
16 years 1 months ago
Scalable join processing on very large RDF graphs
With the proliferation of the RDF data format, engines for RDF query processing are faced with very large graphs that contain hundreds of millions of RDF triples. This paper addre...
Thomas Neumann, Gerhard Weikum
EDBTW
2006
Springer
15 years 5 months ago
Hash-Based Structural Join Algorithms
Abstract. Algorithms for processing Structural Joins embody essential building blocks for XML query evaluation. Their design is a difficult task, because they have to satisfy many ...
Christian Mathis, Theo Härder
INTERNET
2010
283views more  INTERNET 2010»
14 years 11 months ago
Querying the Data Web: The MashQL Approach
 We propose a query formulation language, called MashQL for querying and mashing up structured data on the web. The novelty of  MashQL is that it does not require...
Mustafa Jarrar, Marios D. Dikaiakos