Results 31 to 40 of about 837,200 (246)
On net-Laplacian energy of signed graphs
Communications in Combinatorics and Optimization, 2017 A signed graph is a graph where the edges are assigned either positive or negative signs. Net degree of a signed graph is the difference between the number of positive and negative edges incident with a vertex. It is said to be net-regular if all its
Nutan G. Nayak
doaj +1 more source
A Note on Path Signed Digraphs [PDF]
, 2010 The concept of a line signed digraph is generalized to that of a path signed ...
S. Vijay +5 more
core +1 more source
Smarandachely antipodal signed digraphs [PDF]
, 2010 For standard terminology and notion in digraph theory, we refer the reader to the classic text-books of Bondy and Murty [1] and Harary et al.[3]; the non-standard will be given in this paper as and when ...
Salestina, M. Ruby +5 more
core +1 more source
Signed random walk diffusion for effective representation learning in signed graphs.
PLoS ONE, 2022 How can we model node representations to accurately infer the signs of missing edges in a signed social graph? Signed social graphs have attracted considerable attention to model trust relationships between people. Various representation learning methods
Jinhong Jung, Jaemin Yoo, U Kang
doaj +2 more sources
On $bullet$-lict signed graphs $L_{bullet_c}(S)$ and $bullet$-line signed graphs $L_bullet(S)$ [PDF]
Transactions on Combinatorics, 2016 A emph{signed graph} (or, in short, emph{sigraph}) $S=(S^u,sigma)$ consists of an underlying graph $S^u :=G=(V,E)$ and a function $sigma:E(S^u)longrightarrow {+,-}$, called the signature of $S$. A emph{marking} of $S$ is a function $mu:V(S)longrightarrow
Mukti Acharya +2 more
doaj
Further Results on the Nullity of Signed Graphs
Journal of Applied Mathematics, 2014 The nullity of a graph is the multiplicity of the eigenvalue zero in its spectrum. A signed graph is a graph with a sign attached to each of its edges. In this paper, we apply the coefficient theorem on the characteristic polynomial of a signed graph and
Yu Liu, Lihua You
doaj +1 more source
Estrada Index and Some Properties of Partially Signed Graphs [PDF]
Mathematics Interdisciplinary ResearchA signed graph is a graph with signed edges. Recently, a special graph consisting of signed and unsigned edges has been introduced and is called a partially signed graph.
Shila Razavi, Gholam Fath-Tabar
doaj +1 more source
Research on Extreme Signed Graphs with Minimal Energy in Tricyclic Signed Graphs S(n, n + 2)
Complexity, 2020 A signed graph is acquired by attaching a sign to each edge of a simple graph, and the signed graphs have been widely used as significant computer models in the study of complex systems.
Yajing Wang, Yubin Gao
doaj +1 more source
Learning Weight Signed Network Embedding with Graph Neural Networks
Data Science and Engineering, 2023 Network embedding aims to map nodes in a network to low-dimensional vector representations. Graph neural networks (GNNs) have received much attention and have achieved state-of-the-art performance in learning node representation.
Zekun Lu +4 more
doaj +1 more source
Signed Lp-distance fields [PDF]
, 2012 We introduce and study a family of generalized double-layer potentials which are used to build smooth and accurate approximants for the signed distance function.
Pasko, Alexander +2 more
core +1 more source