Results 11 to 20 of about 339,158 (270)

Signed graph representation learning for functional-to-structural brain network mapping. [PDF]

Med Image Anal, 2023
Tang H, Guo L, Fu X, Wang Y, Mackin S, Ajilore O, Leow AD, Thompson PM, Huang H, Zhan L.   +9 more
europepmc   +2 more sources

Contrastive Brain Network Learning via Hierarchical Signed Graph Pooling Model. [PDF]

IEEE Trans Neural Netw Learn Syst
Tang H, Ma G, Guo L, Fu X, Huang H, Zhan L.   +5 more
europepmc   +2 more sources

SUM SIGNED GRAPHS – II

Ural Mathematical Journal, 2020
In this paper, the study of sum signed graphs is continued. The balancing and switching nature of the graphs are analyzed. The concept of  \(rna\) number is revisited and an important relation between the number and its complement is established.
Athira P. Ranjith, Joseph Varghese Kureethara   +1 more
openaire   +4 more sources

Negative (and positive) circles in signed graphs: A problem collection

AKCE International Journal of Graphs and Combinatorics, 2018
A signed graph is a graph whose edges are labeled positive or negative. The sign of a circle (cycle, circuit) is the product of the signs of its edges. Most of the essential properties of a signed graph depend on the signs of its circles. Here I describe
Thomas Zaslavsky
doaj   +2 more sources

COMMON-EDGE SIGNED GRAPH OF A SIGNED GRAPH [PDF]

Journal of the Indonesian Mathematical Society, 2010
A Smarandachely k-signed graph (Smarandachely k-marked graph) is anordered pair....DOI : http://dx.doi.org/10.22342/jims.16.2.34.105 ...
P. Siva Kota Reddy, E. Sampathkumar, M. S. Subramanya   +2 more
openaire   +1 more source

Signed graphs

Discrete Applied Mathematics, 1982
AbstractA signed graph is a graph with a sign attached to each arc. This article introduces the matroids of signed graphs, which generalize both the polygon matroids and the even-circle (or unoriented cycle) matroids of ordinary graphs. The concepts of balance, switching, restriction and contraction, double covering graphs, and linear representation of
Ghorbani, Ebrahim, Haemers, W. H., Maimani, Hamid Reza, Parsaei Majd, Leila   +3 more
openaire   +6 more sources

Signed graphs connected with the root lattice

Bibechana, 2014
For any base of the root lattice (An) we can construct a signed graph. A signed graph is one whose edges are signed by +1 or -1. A signed graph is balanced if and only if its vertex set can be divided into two sets-either of which may be empty–so that ...
RN Yadav
doaj   +3 more sources

Learning Embedding for Signed Network in Social Media with Hierarchical Graph Pooling

Applied Sciences, 2022
Signed network embedding concentrates on learning fixed-length representations for nodes in signed networks with positive and negative links, which contributes to many downstream tasks in social media, such as link prediction.
Jiawang Chen, Zhenqiang Wu
doaj   +1 more source

Total Minimal Dominating Signed Graph [PDF]

, 2010
Cartwright and Harary considered graphs in which vertices represent persons and the edges represent symmetric dyadic relations amongst persons each of which designated as being positive or negative according to whether the nature of the relationship is ...
Reddy, Siva Kota, Vijay, S.
core   +1 more source

Edge coloring signed graphs [PDF]

Discrete Mathematics, 2020
We define a method for edge coloring signed graphs and what it means for such a coloring to be proper. Our method has many desirable properties: it specializes to the usual notion of edge coloring when the signed graph is all-negative, it has a natural definition in terms of vertex coloring of a line graph, and the minimum number of colors required for
openaire   +2 more sources