Results 51 to 60 of about 307 (69)

Polynomial Time Algorithm for Determining Max-Min Paths in Networks and Solving Zero Value Cyclic Games [PDF]

open access: yesComputer Science Journal of Moldova, 2005
We study the max-min paths problem, which represents a game version of the shortest and the longest paths problem in a weighted directed graph. In this problem the vertex set V of the weighted directed graph G=(V,E) is divided into two disjoint subsets ...
Dmitrii D. Lozovanu
doaj  

Directed paths with few or many colors in colored directed graphs [PDF]

open access: yes, 2000
Given a graph $D=(V(D),A(D))$ and a coloring of $D$, not necessarily a proper coloring of either the arcs or the vertices of $D$, we consider the complexity of finding a path of $D$ from a given vertex $s$ to another given vertex $t$ with as few ...
Broersma, H.J., Li, X., Zhang, S.
core   +1 more source

Hamiltonian cycles and subsets of discounted occupational measures

open access: yes, 2019
We study a certain polytope arising from embedding the Hamiltonian cycle problem in a discounted Markov decision process. The Hamiltonian cycle problem can be reduced to finding particular extreme points of a certain polytope associated with the input ...
Eshragh, Ali   +3 more
core   +1 more source

Discovering a junction tree behind a Markov network by a greedy algorithm

open access: yes, 2011
In an earlier paper we introduced a special kind of k-width junction tree, called k-th order t-cherry junction tree in order to approximate a joint probability distribution.
A Altmüller   +27 more
core   +1 more source

On the Lovasz O-number of Almost Regular Graphs With Application to Erdos-Renyi Graphs [PDF]

open access: yes
AMS classifications: 05C69; 90C35; 90C22;Erdos-Renyi graph;stability number;Lovasz O-number;Schrijver O-number;C*-algebra;semidefinite ...
Klerk, E. de   +3 more
core   +1 more source

Finding weakly reversible realizations of chemical reaction networks using optimization

open access: yes, 2011
An algorithm is given in this paper for the computation of dynamically equivalent weakly reversible realizations with the maximal number of reactions, for chemical reaction networks (CRNs) with mass action kinetics.
Hangos, Katalin M.   +2 more
core  

Central hubs prediction for bio networks by directed hypergraph - GA with validation to COVID-19 PPI. [PDF]

open access: yesPattern Recognit Lett, 2022
Gopalakrishnan S   +4 more
europepmc   +1 more source

A simple Havel-Hakimi type algorithm to realize graphical degree sequences of directed graphs

open access: yes, 2009
One of the simplest ways to decide whether a given finite sequence of positive integers can arise as the degree sequence of a simple graph is the greedy algorithm of Havel and Hakimi. This note extends their approach to directed graphs.
Erdős, Péter L.   +2 more
core   +2 more sources

Detecting induced subgraphs [PDF]

open access: yes
An s-graph is a graph with two kinds of edges : subdivisible edges and real edges. A realisation of an s-graphB is any graph obtained by subdividing subdivisible edges of B into paths of arbitrary length (at least one).
Benjamin Lévêque   +3 more
core  

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