36 search results - page 1 / 8 » Symmetry and Approximability of Submodular Maximization Prob... |
FOCS
2009
IEEE
13 years 11 months ago
2009
IEEE
Abstract— A number of recent results on optimization problems involving submodular functions have made use of the ”multilinear relaxation” of the problem [3], [8], [24], [14]...
STOC
2012
ACM
11 years 7 months ago
2012
ACM
We consider submodular optimization problems, and provide a general way of translating oracle inapproximability results arising from the symmetry gap technique to computational co...
FOCS
2007
IEEE
13 years 11 months ago
2007
IEEE
Submodular maximization generalizes many important problems including Max Cut in directed/undirected graphs and hypergraphs, certain constraint satisfaction problems and maximum f...
CORR
2010
Springer
13 years 4 months ago
2010
Springer
We consider the problem of maximizing a nonnegative (possibly non-monotone) submodular set function with or without constraints. Feige et al. [9] showed a 2/5-approximation for th...
NAACL
2010
13 years 2 months ago
2010
We treat the text summarization problem as maximizing a submodular function under a budget constraint. We show, both theoretically and empirically, a modified greedy algorithm can...