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» On the Complexity of Ordered Colourings
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PODS
2006
ACM
134views Database» more  PODS 2006»
14 years 9 months ago
Approximate quantiles and the order of the stream
Recently, there has been an increased focus on modeling uncertainty by distributions. Suppose we wish to compute a function of a stream whose elements are samples drawn independen...
Sudipto Guha, Andrew McGregor
SWAT
2004
Springer
136views Algorithms» more  SWAT 2004»
14 years 2 months ago
The Relative Worst Order Ratio Applied to Seat Reservation
The seat reservation problem is the problem of assigning passengers to seats on a train with n seats and k stations enroute in an online manner. The performance of algorithms for t...
Joan Boyar, Paul Medvedev
IPPS
2000
IEEE
14 years 1 months ago
On Optimal Fill-Preserving Orderings of Sparse Matrices for Parallel Cholesky Factorizations
In this paper, we consider the problem of nding llpreserving ordering of a sparse symmetric and positive de nite matrix such that the reordered matrix is suitable for parallel fac...
Wen-Yang Lin, Chuen-Liang Chen
AAAI
2008
13 years 11 months ago
Determining Possible and Necessary Winners under Common Voting Rules Given Partial Orders
Usually a voting rule requires agents to give their preferences as linear orders. However, in some cases it is impractical for an agent to give a linear order over all the alterna...
Lirong Xia, Vincent Conitzer
STACS
1994
Springer
14 years 1 months ago
Reachability and the Power of Local Ordering
The L ? = NL question remains one of the major unresolved problems in complexity theory. Both L and NL have logical characterizations as the sets of totally ordered ( ) structures...
Kousha Etessami, Neil Immerman