142 search results - page 27 / 29 » On Conjunctive Query Answering in EL |
ICDT
2012
ACM
12 years 5 days ago
2012
ACM
A universal model of a database D and a set Σ of integrity constraints is a database that extends D, satisfies Σ, and is most general in the sense that it contains sound and co...
PODS
2008
ACM
14 years 10 months ago
2008
ACM
We revisit the classical chase procedure, studying its properties as well as its applicability to standard database problems. We settle (in the negative) the open problem of decid...
WEBI
2010
Springer
13 years 7 months ago
2010
Springer
In recent years, there has been an explosion of publicly available RDF and OWL web pages. Some of these pages are static text files, while others are dynamically generated from la...
ICDE
2009
IEEE
14 years 4 months ago
2009
IEEE
Applications involving analysis of data streams have gained significant popularity and importance. Frequency counting, frequent elements and top-k queries form a class of operato...
IROS
2007
IEEE
14 years 4 months ago
2007
IEEE
— In this paper, we propose a new method for the motion planning problem of rigid object dexterous manipulation with a robotic multi-fingered hand, under quasi-static movement a...