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» Querying RDF Data Using A Multigraph-based Approach
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190
Voted
VLDB
2001
ACM
144views Database» more  VLDB 2001»
16 years 2 months ago
Approximate query processing using wavelets
Approximate query processing has emerged as a costeffective approach for dealing with the huge data volumes and stringent response-time requirements of today's decision-suppo...
Kaushik Chakrabarti, Minos N. Garofalakis, Rajeev ...
VLDB
2005
ACM
140views Database» more  VLDB 2005»
15 years 8 months ago
OLAP Over Uncertain and Imprecise Data
We extend the OLAP data model to represent data ambiguity, specifically imprecision and uncertainty, and introduce an allocation-based approach to the semantics of aggregation qu...
Douglas Burdick, Prasad Deshpande, T. S. Jayram, R...
225
Voted
ICDE
2007
IEEE
118views Database» more  ICDE 2007»
16 years 3 months ago
Using Queries to Associate Metadata with Data
As relational databases proliferate and become increasingly complex, both in their internal structure and in their interactions with other databases and applications, there is a g...
Divesh Srivastava, Yannis Velegrakis
121
Voted
PVLDB
2008
120views more  PVLDB 2008»
15 years 2 months ago
On the provenance of non-answers to queries over extracted data
In information extraction, uncertainty is ubiquitous. For this reason, it is useful to provide users querying extracted data with explanations for the answers they receive. Provid...
Jiansheng Huang, Ting Chen, AnHai Doan, Jeffrey F....
SIGMOD
2001
ACM
104views Database» more  SIGMOD 2001»
16 years 2 months ago
Querying Multi-dimensional Data Indexed Using the Hilbert Space-filling Curve
Mapping to one-dimensional values and then using a onedimensional indexing method has been proposed as a way of indexing multi-dimensional data. Most previous related work uses th...
Jonathan K. Lawder, Peter J. H. King