383 search results - page 63 / 77 » Query Containment for Conjunctive Queries with Regular Expre... |
168
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SIGMOD
2008
ACM
15 years 11 months ago
2008
ACM
As applications within and outside the enterprise encounter increasing volumes of unstructured data, there has been renewed interest in the area of information extraction (IE) ? t...
109
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FQAS
2004
Springer
15 years 3 months ago
2004
Springer
In the context of relational as well as deductive databases, correct and efficient integrity checking is a crucial issue, as, without any guarantee of data consistency, the answers...
118
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JAR
2007
14 years 11 months ago
2007
As applications of description logics proliferate, efficient reasoning with knowledge bases containing many assertions becomes ever more important. For such cases, we developed a n...
CC
1998
Springer
14 years 11 months ago
1998
Springer
We introduce the natural class SP 2 containing those languages which may be expressed in terms of two symmetric quanti ers. This class lies between P 2 and P 2 P 2 and naturall...
PODS
2010
ACM
15 years 1 months ago
2010
ACM
Databases in real life are often neither entirely closed-world nor entirely open-world. Indeed, databases in an enterprise are typically partially closed, in which a part of the d...