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METMBS
2004
196views Mathematics» more  METMBS 2004»
13 years 11 months ago
An Open Problem in RNA Secondary Structure Prediction by the Comparative Approach
Abstract One approach to predict the secondary structure of RNA is the comparative approach. This approach is used when alignment of several homologous sequences of a RNA is availa...
Stefan Engelen, Fariza Tahi
CORR
2010
Springer
152views Education» more  CORR 2010»
13 years 10 months ago
A Faster Algorithm for Quasi-convex Integer Polynomial Optimization
We present a faster exponential-time algorithm for integer optimization over quasi-convex polynomials. We study the minimization of a quasiconvex polynomial subject to s quasi-con...
Robert Hildebrand, Matthias Köppe
EOR
2006
81views more  EOR 2006»
13 years 10 months ago
Optimal and near-optimal policies for lost sales inventory models with at most one replenishment order outstanding
In this paper we use policy-iteration to explore the behaviour of optimal control policies for lost sales inventory models with the constraint that not more than one replenishment...
Roger M. Hill, Søren Glud Johansen
IGPL
2006
87views more  IGPL 2006»
13 years 10 months ago
Satisfiability Decay along Conjunctions of Pseudo-Random Clauses
Abstract. k-SAT is a fundamental constraint satisfaction problem. It involves S(m), the satisfaction set of the conjunction of m clauses, each clause a disjunction of k literals. T...
Eli Shamir
TNN
2008
128views more  TNN 2008»
13 years 9 months ago
Nonnegative Matrix Factorization in Polynomial Feature Space
Abstract--Plenty of methods have been proposed in order to discover latent variables (features) in data sets. Such approaches include the principal component analysis (PCA), indepe...
Ioan Buciu, Nikos Nikolaidis, Ioannis Pitas