796 search results - page 48 / 160 » Approximating the centroid is hard |
FOCS
2006
IEEE
14 years 1 months ago
2006
IEEE
Given an undirected hypergraph and a subset of vertices S ⊆ V with a specified root vertex r ∈ S, the STEINER ROOTED-ORIENTATION problem is to find an orientation of all the...
FCT
2007
Springer
13 years 11 months ago
2007
Springer
We investigate issues regarding two hard problems related to voting, the optimal weighted lobbying problem and the winner problem for Dodgson elections. Regarding the former, Chris...
SIAMCOMP
2000
13 years 7 months ago
2000
We present a linear programming-based method for nding \gadgets", i.e., combinatorial structures reducing constraints of one optimization problem to constraints of another. A...
INFOCOM
2011
IEEE
12 years 11 months ago
2011
IEEE
—An approximate distance query data structure is a compact representation of a graph, and can be queried to approximate shortest paths between any pair of vertices. Any such data...
ECCV
2004
Springer
14 years 1 months ago
2004
Springer
Stochastic tracking of structured models in monolithic state spaces often requires modeling complex distributions that are difficult to represent with either parametric or sample...