406 search results - page 28 / 82 » Privacy-Preserving Set Union |
ICDT
2009
ACM
14 years 8 months ago
2009
ACM
We study containment and equivalence of (unions of) conjunctive queries on relations annotated with elements of a commutative semiring. Such relations and the semantics of positiv...
PODS
2010
ACM
14 years 18 days ago
2010
ACM
XML Schema Definitions (XSDs) can be adequately abstracted by the single-type regular tree languages. It is wellknown, that these form a strict subclass of the robust class of re...
CONCUR
2006
Springer
13 years 11 months ago
2006
Springer
We propose a remedy to that part of the state-explosion problem for timed automata which is due to interleaving of actions. We prove the following quite surprising result: the unio...
CORR
2007
Springer
13 years 7 months ago
2007
Springer
We consider the problem of minimizing the size of a set system G such that every subset of {1, . . . , n} can be written as a disjoint union of at most k members of G, where k and...
ICDE
2007
IEEE
14 years 9 months ago
2007
IEEE
In spite of the great progress in the data mining field in recent years, the problem of missing and uncertain data has remained a great challenge for data mining algorithms. Many ...