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INFORMATICALT
2010
103views more  INFORMATICALT 2010»
14 years 5 months ago
Multistage K-Means Clustering for Scenario Tree Construction
Abstract. In stochastic programming and decision analysis, an important issue consists in the approximate representation of the multidimensional stochastic underlying process in th...
Kristina Sutiene, Dalius Makackas, Henrikas Pranev...
CORR
2010
Springer
94views Education» more  CORR 2010»
14 years 5 months ago
Partitions and Coverings of Trees by Bounded-Degree Subtrees
This paper addresses the following questions for a given tree T and integer d 2: (1) What is the minimum number of degree-d subtrees that partition E(T)? (2) What is the minimum n...
David R. Wood
CORR
2008
Springer
138views Education» more  CORR 2008»
14 years 10 months ago
Efficient Implementation of the Generalized Tunstall Code Generation Algorithm
A method is presented for constructing a Tunstall code that is linear time in the number of output items. This is an improvement on the state of the art for non-Bernoulli sources, ...
Michael B. Baer
FOSSACS
2009
Springer
15 years 4 months ago
Parameter Reduction in Grammar-Compressed Trees
Abstract. Trees can be conveniently compressed with linear straight-line contextfree tree grammars. Such grammars generalize straight-line context-free string grammars which are wi...
Markus Lohrey, Sebastian Maneth, Manfred Schmidt-S...
ICML
2006
IEEE
15 years 11 months ago
Fast and space efficient string kernels using suffix arrays
String kernels which compare the set of all common substrings between two given strings have recently been proposed by Vishwanathan & Smola (2004). Surprisingly, these kernels...
Choon Hui Teo, S. V. N. Vishwanathan