Sciweavers

439 search results - page 5 / 88
» Unnesting Arbitrary Queries
Sort
View
SEMWEB
2009
Springer
14 years 5 months ago
XLWrap - Querying and Integrating Arbitrary Spreadsheets with SPARQL
In this paper a novel approach is presented for generating RDF graphs of arbitrary complexity from various spreadsheet layouts. Currently, none of the available spreadsheet-to-RDF ...
Andreas Langegger, Wolfram Wöß
COCO
1989
Springer
97views Algorithms» more  COCO 1989»
14 years 3 months ago
On the Structure of Bounded Queries to Arbitrary NP Sets
Kadin [6] showed that if the Polynomial Hierarchy (PH) has infinitely many levels, then for all k, PSAT[k] ⊂ PSAT[k+1]. This paper extends Kadin’s technique and shows that a p...
Richard Chang
CORR
2010
Springer
147views Education» more  CORR 2010»
13 years 8 months ago
Matching Dependencies with Arbitrary Attribute Values: Semantics, Query Answering and Integrity Constraints
Matching dependencies (MDs) are used to declaratively specify the identification (or matching) of certain attribute values in pairs of database tuples when some similarity conditi...
Jaffer Gardezi, Leopoldo E. Bertossi, Iluju Kiring...
SSDBM
2006
IEEE
96views Database» more  SSDBM 2006»
14 years 5 months ago
Efficient Query Processing in Arbitrary Subspaces Using Vector Approximations
Hans-Peter Kriegel, Peer Kröger, Matthias Sch...