SODA
2012
ACM
12 years 1 months ago
2012
ACM
Motivated by online ad allocation, we study the problem of simultaneous approximations for the adversarial and stochastic online budgeted allocation problem. This problem consists...
IACR
2011
12 years 11 months ago
2011
We present a radically new approach to fully homomorphic encryption (FHE) that dramatically improves performance and bases security on weaker assumptions. A central conceptual con...
ESA
2011
Springer
12 years 11 months ago
2011
Springer
In this work we study the problem of Bipartite Correlation Clustering (BCC), a natural bipartite counterpart of the well studied Correlation Clustering (CC) problem. Given a bipart...
ALGORITHMICA
1998
13 years 11 months ago
1998
The dominatingset problemin graphs asks for a minimumsize subset of vertices with the followingproperty: each vertex is required to either be in the dominating set, or adjacent to...
CORR
2010
Springer
13 years 11 months ago
2010
Springer
We investigate the extent to which price updates can increase the revenue of a seller with little prior information on demand. We study prior-free revenue maximization for a selle...
CCCG
2006
14 years 28 days ago
2006
We present a polynomial time algorithm for the unit disk covering problem with an approximation factor 72, and show that this is the best possible approximation factor based on th...
COCO
2004
Springer
14 years 3 months ago
2004
Springer
We initiate the study of the computational complexity of the covering radius problem for point lattices, and approximation versions of the problem for both lattices and linear cod...
INFOCOM
2002
IEEE
14 years 4 months ago
2002
IEEE
—Connected dominating set (CDS) has been proposed as virtual backbone or spine of wireless ad hoc networks. Three distributed approximation algorithms have been proposed in the l...
HICSS
2002
IEEE
14 years 4 months ago
2002
IEEE
—Connected dominating set (CDS) has been proposed as virtual backbone or spine of wireless ad hoc networks. Three distributed approximation algorithms have been proposed in the l...
PDCAT
2005
Springer
14 years 5 months ago
2005
Springer
We consider the practical NP-complete problem of finding a minimum weight spanning tree with both edge weights and inner nodes weights. We present two polynomial time algorithms ...