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» Pattern-Based Query Answering
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72
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DLOG
2008
14 years 12 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
89
Voted
SUM
2007
Springer
15 years 3 months ago
The Consistency Extractor System: Querying Inconsistent Databases Using Answer Set Programs
Abstract. We present the Consistency Extractor System (ConsEx) that uses answer set programming to compute consistent answers to first-order queries posed to relational databases ...
Mónica Caniupán Marileo, Leopoldo E....
ADC
2006
Springer
142views Database» more  ADC 2006»
15 years 3 months ago
An optimization for query answering on ALC database
Query answering over OWLs and RDFs on the Semantic Web is, in general, a deductive process. To this end, OWL, a family of web ontology languages based on description logic, has be...
Pakornpong Pothipruk, Guido Governatori
CORR
2010
Springer
139views Education» more  CORR 2010»
14 years 4 months ago
Data Cleaning and Query Answering with Matching Dependencies and Matching Functions
Matching dependencies were recently introduced as declarative rules for data cleaning and entity resolution. Enforcing a matching dependency on a database instance identifies the ...
Leopoldo E. Bertossi, Solmaz Kolahi, Laks V. S. La...
103
Voted
SCCC
2005
IEEE
15 years 3 months ago
Optimizing repair programs for consistent query answering
Databases may not satisfy integrity constraints (ICs) for several reasons. Nevertheless, in most of the cases an important part of the data is still consistent wrt certain desired...
Mónica Caniupán Marileo, Leopoldo E....