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CPM
2007
Springer
222views Combinatorics» more  CPM 2007»
16 years 8 days ago
Computing Exact p-Value for Structured Motif
Extracting motifs from a set of DNA sequences is important in computational biology. Occurrence probability is a common used statistics to evaluate the statistical significance of...
Jing Zhang, Xi Chen, Ming Li
IPCO
2008
188views Optimization» more  IPCO 2008»
15 years 7 months ago
Binary Positive Semidefinite Matrices and Associated Integer Polytopes
We consider the positive semidefinite (psd) matrices with binary entries. We give a characterisation of such matrices, along with a graphical representation. We then move on to co...
Adam N. Letchford, Michael M. Sørensen
EJC
2010
15 years 6 months ago
Bijections for a class of labeled plane trees
We consider plane trees whose vertices are given labels from the set {1, 2, . . . , k} in such a way that the sum of the labels along any edge is at most k + 1; it turns out that ...
Nancy S. S. Gu, Helmut Prodinger, Stephan Wagner
JCB
2008
144views more  JCB 2008»
15 years 6 months ago
Multi-Break Rearrangements and Breakpoint Re-Uses: From Circular to Linear Genomes
Multi-break rearrangements break a genome into multiple fragments and further glue them together in a new order. While 2-break rearrangements represent standard reversals, fusions...
Max A. Alekseyev
MP
2006
77views more  MP 2006»
15 years 6 months ago
Zigzag inequalities: a new class of facet-inducing inequalities for Arc Routing Problems
In this paper we introduce a new class of facet-inducing inequalities for the Windy Rural Postman Problem and the Windy General Routing Problem. These inequalities are called Zigz...
Angel Corberán, Isaac Plana, José M....