Results 21 to 30 of about 28,286 (155)

A new, fast algorithm for detecting protein coevolution using maximum compatible cliques

open access: yesAlgorithms for Molecular Biology, 2011
Background The MatrixMatchMaker algorithm was recently introduced to detect the similarity between phylogenetic trees and thus the coevolution between proteins. MMM finds the largest common submatrices between pairs of phylogenetic distance matrices, and
Rose Jonathan   +3 more
doaj   +1 more source

Deciding Clique-Width for Graphs of Bounded Tree-Width [PDF]

open access: yesJournal of Graph Algorithms and Applications, 2001
Summary: We show that there exists a linear time algorithm for deciding whether a graph of bounded tree-width has clique-width \(k\) for some fixed integer \(k\).
Espelage, Wolfgang   +2 more
openaire   +2 more sources

Asteroidal Quadruples in non Rooted Path Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2015
A directed path graph is the intersection graph of a family of directed subpaths of a directed tree. A rooted path graph is the intersection graph of a family of directed subpaths of a rooted tree. Rooted path graphs are directed path graphs.
Gutierrez Marisa   +2 more
doaj   +1 more source

1-Skeletons of the Spanning Tree Problems with Additional Constraints

open access: yesМоделирование и анализ информационных систем, 2015
In this paper, we study polyhedral properties of two spanning tree problems with additional constraints. In the first problem, it is required to find a tree with a minimum sum of edge weights among all spanning trees with the number of leaves less than ...
V. A. Bondarenko   +2 more
doaj   +1 more source

Canonizing Graphs of Bounded Tree Width in Logspace [PDF]

open access: yes, 2015
Graph canonization is the problem of computing a unique representative, a canon, from the isomorphism class of a given graph. This implies that two graphs are isomorphic exactly if their canons are equal.
Elberfeld, Michael, Schweitzer, Pascal
core   +2 more sources

Clique-sums, tree-decompositions and compactness

open access: yesDiscrete Mathematics, 1990
The results presented in this paper seem to be in the line with previous papers of Robertson and Seymour. Five definitions fix basic ideas related with tree decompositions, cliques, \(k\)-simplexes, \(k\)-complexes and chordal graphs as well as \(k\)-summability and other related subjects.
Kříž, Igor, Thomas, Robin
openaire   +1 more source

Variable selection for disease progression models: methods for oncogenetic trees and application to cancer and HIV

open access: yesBMC Bioinformatics, 2017
Background Disease progression models are important for understanding the critical steps during the development of diseases. The models are imbedded in a statistical framework to deal with random variations due to biology and the sampling process when ...
Katrin Hainke   +3 more
doaj   +1 more source

Modelling epidemics on d-cliqued graphs

open access: yesLetters in Biomathematics, 2018
Since social interactions have been shown to lead to symmetric clusters, we propose here that symmetries play a key role in epidemic modelling. Mathematical models on d-ary tree graphs were recently shown to be particularly effective for modelling ...
Laura P. Schaposnik, Anlin Zhang
doaj   +1 more source

Decision Tree Based Approaches for Detecting Protein Complex in Protein Protein Interaction Network (PPI) via Link and Sequence Analysis

open access: yesIEEE Access, 2018
A network of modular protein complexes inside a cell coordinates many biological processes and is known as protein-protein interaction (PPI) network. APPI network can be modeled as a graph, in which edges represent interactions among proteins, and sub ...
Aisha Sikandar   +7 more
doaj   +1 more source

Independence of causal influence and clique tree propagation

open access: yesInternational Journal of Approximate Reasoning, 1998
Appears in Proceedings of the Thirteenth Conference on Uncertainty in Artificial Intelligence (UAI1997)
Zhang, NL, Yan, L.
openaire   +2 more sources

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