406 search results - page 22 / 82 » Privacy-Preserving Set Union |
JACM
1998
13 years 7 months ago
1998
Given a collection Ᏺ of subsets of S ϭ {1, . . . , n}, set cover is the problem of selecting as few as possible subsets from Ᏺ such that their union covers S, and max k-cover ...
TFS
2008
13 years 7 months ago
2008
In this paper, the notion termed a "nonstationary fuzzy set" is introduced, and the concept of a perturbation function that is used for generating nonstationary fuzzy set...
AGP
1999
IEEE
13 years 11 months ago
1999
IEEE
In this paper we consider the relative expressive power of two very common operators applicable to sets and multisets: the with and the union operators. For such operators we prove...
PODS
2005
ACM
14 years 7 months ago
2005
ACM
We show that any expression of the relational division operator in the relational algebra with union, difference, projection, selection, constant-tagging, and joins, must produce ...
CORR
2010
Springer
13 years 4 months ago
2010
Springer
An old problem of Moser asks: how large of a union-free subfamily does every family of m sets have? A family of sets is called union-free if there are no three distinct sets in th...