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PKDD
2010
Springer
164views Data Mining» more  PKDD 2010»
15 years 4 months ago
Efficient Planning in Large POMDPs through Policy Graph Based Factorized Approximations
Partially observable Markov decision processes (POMDPs) are widely used for planning under uncertainty. In many applications, the huge size of the POMDP state space makes straightf...
Joni Pajarinen, Jaakko Peltonen, Ari Hottinen, Mik...
WADS
2005
Springer
111views Algorithms» more  WADS 2005»
15 years 12 months ago
Near-Optimal Pricing in Near-Linear Time
We present efficient approximation algorithms for a number of problems that call for computing the prices that maximize the revenue of the seller on a set of items. Algorithms for ...
Jason D. Hartline, Vladlen Koltun
IWOCA
2009
Springer
132views Algorithms» more  IWOCA 2009»
16 years 1 months ago
Fast Convolutions and Their Applications in Approximate String Matching
We develop a method for performing boolean convolutions efficiently in word RAM model of computation, having a word size of w = Ω(log n) bits, where n is the input size. The tech...
Kimmo Fredriksson, Szymon Grabowski
DIS
2007
Springer
16 years 19 days ago
On Approximating Minimum Infrequent and Maximum Frequent Sets
The maximum cardinality of a frequent set as well as the minimum cardinality of an infrequent set are important characteristic numbers in frequent (item) set mining. Gunopulos et a...
Mario Boley
TAMC
2007
Springer
16 years 17 days ago
Approximability and Parameterized Complexity of Consecutive Ones Submatrix Problems
Abstract. We develop a refinement of a forbidden submatrix characterization of 0/1-matrices fulfilling the Consecutive Ones Property (C1P). This novel characterization finds app...
Michael Dom, Jiong Guo, Rolf Niedermeier