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» Answering Queries Using Views
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DLOG
2008
13 years 9 months ago
Conjunctive Query Answering in SH using Knots
Answering conjunctive queries (CQs) has been recognized as a key task for the usage of Description Logics (DLs) in a number of applications. The problem has been studied by many au...
Magdalena Ortiz, Mantas Simkus, Thomas Eiter
VLDB
1997
ACM
94views Database» more  VLDB 1997»
13 years 11 months ago
Describing and Using Query Capabilities of Heterogeneous Sources
Information integration systems have to cope with the different and limited query interfaces of the underlying information sources. First, the integration systems need description...
Vasilis Vassalos, Yannis Papakonstantinou
DOLAP
2000
ACM
13 years 11 months ago
CUBIST: A New Algorithm For Improving the Performance of Ad-hoc OLAP Queries
Being able to efficiently answer arbitrary OLAP queries that aggregate along any combination of dimensions over numerical and categorical attributes has been a continued, major co...
Lixin Fu, Joachim Hammer
VLDB
2003
ACM
141views Database» more  VLDB 2003»
14 years 7 months ago
Computing complete answers to queries in the presence of limited access patterns
In data applications such as information integration, there can be limited access patterns to relations, i.e., binding patterns require values to be specified for certain attribut...
Chen Li
ICLP
2009
Springer
14 years 8 months ago
Using Histograms to Better Answer Queries to Probabilistic Logic Programs
Probabilistic logic programs (PLPs) define a set of probability distribution functions (PDFs) over the set of all Herbrand interpretations of the underlying logical language. When...
Matthias Broecheler, Gerardo I. Simari, V. S. Subr...