Query and Predicate Emptiness in Ontology-Based Data Access.

Franz Baader Meghyn Bienvenu Carsten Lutz Frank Wolter

Published in: J. Artif. Intell. Res. (2016)

Keyphrases

ontology based data access
query processing
database
query answering
query rewriting
response time
user queries
first order logic

data sources
data structure
description logics
relevance feedback
query expansion
answering queries
query optimization

xpath queries
query evaluation
complex queries
incomplete information
database queries
search engine
knowledge base

deep web
data exchange
integrity constraints
data model
data integration
semantic web
information retrieval systems