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» Exact Algorithms for the Quadratic Linear Ordering Problem
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SIGMOD
2008
ACM
111views Database» more  SIGMOD 2008»
16 years 4 months ago
Discovering bucket orders from full rankings
Discovering a bucket order B from a collection of possibly noisy full rankings is a fundamental problem that relates to various applications involving rankings. Informally, a buck...
Jianlin Feng, Qiong Fang, Wilfred Ng
TAMC
2010
Springer
15 years 9 months ago
Streaming Algorithms for Some Problems in Log-Space
Abstract. In this paper, we give streaming algorithms for some problems which are known to be in deterministic log-space, when the number of passes made on the input is unbounded. ...
Ajesh Babu, Nutan Limaye, Girish Varma
SODA
2010
ACM
235views Algorithms» more  SODA 2010»
16 years 1 months ago
Algorithmic Lower Bounds for Problems Parameterized by Clique-width
Many NP-hard problems can be solved efficiently when the input is restricted to graphs of bounded tree-width or clique-width. In particular, by the celebrated result of Courcelle,...
Fedor V. Fomin, Petr A. Golovach, Daniel Lokshtano...
WSC
2008
15 years 6 months ago
Discrete stochastic optimization using linear interpolation
We consider discrete stochastic optimization problems where the objective function can only be estimated by a simulation oracle; the oracle is defined only at the discrete points....
Honggang Wang, Bruce W. Schmeiser
ISBI
2004
IEEE
16 years 4 months ago
Penalized Likelihood Transmission Image Reconstruction: Unconstrained Monotonic Algorithms
Statistical reconstruction algorithms in transmission tomography yield improved images relative to the conventional FBP method. The most popular iterative algorithms for this prob...
Somesh Srivastava, Jeffrey A. Fessler