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MFCS
2001
Springer
14 years 1 months ago
On the Approximability of the Steiner Tree Problem
We show that it is not possible to approximate the minimum Steiner tree problem within 1 + 1 162 unless RP = NP. The currently best known lower bound is 1 + 1 400. The reduction i...
Martin Thimm
ACTA
2000
302views more  ACTA 2000»
13 years 8 months ago
Efficiently building a parse tree from a regular expression
We show in this paper that parsing with regular expressions instead of context-free grammars, when it is possible, is desirable. We present efficient algorithms for performing diff...
Danny Dubé, Marc Feeley
SODA
2001
ACM
144views Algorithms» more  SODA 2001»
13 years 10 months ago
Representing dynamic binary trees succinctly
We introduce a new updatable representation ofbinary trees. The structure requires the information theoretic minimum 2n + o(n) bits and supports basic navigational operations in c...
J. Ian Munro, Venkatesh Raman, Adam J. Storm
VLDB
2006
ACM
162views Database» more  VLDB 2006»
14 years 8 months ago
Dependency trees in sub-linear time and bounded memory
We focus on the problem of efficient learning of dependency trees. Once grown, they can be used as a special case of a Bayesian network, for PDF approximation, and for many other u...
Dan Pelleg, Andrew W. Moore
CSMR
2009
IEEE
14 years 1 months ago
Application of TreeNet in Predicting Object-Oriented Software Maintainability: A Comparative Study
There is an increasing interest in more accurate prediction of software maintainability in order to better manage and control software maintenance. Recently, TreeNet has been prop...
Mahmoud O. Elish, Karim O. Elish