Positive and negative inertia index of a graph. Linear Algebra Appl. 2013;438:331-341.Ma H C,Yang W H,Li S G.Positive and negative inertia in- dex of a graph[J].Linear Algebra Appl,2013,438:331-341.Positive and negative inertia index of a graph[J] . Haicheng Ma,Wenhua Yang,...
In the area of graph theory in mathematics, a signed graph is a graph in which each edge has a positive or negative sign. Formally, a signed graph Σ is a pair (G, σ) that consists of a graph G = (V, E) and a sign mapping or signature σ from E to the sign group {+,...
In a signed graph, each link is labeled with either a positive or a negative sign. This is particularly appropriate to model polarized systems. Such a graph can be characterized through the notion of structural balance, which relies on the partitioning of the graph into internally solidary but ...
SCSIO sof101: an antimicrobial compound against Gram-positive and -negative pathogens Article 16 January 2023 Introduction Guaianes are sesquiterpenoids bearing a bicyclo[5.3.0]-decane skeleton with enormously structural diversities, including nor-guaianes1, guaiane alkaloids2,3, guaiane dimers4,5, ...
This function performs bitwise ADD to extra positive masks specified by extra_pos_mask and bitwise OR to extra negative masks specified by extra_neg_mask. It is helpful, for example, when you have supervision signals from labels and want to train the model in a semi-supervised manner. ...
A signed graph (G,Σ) is a graph G where each edge is given a sign, positive or negative; Σ⊆E(G) denotes the set of negative edges. Thus, (G,Σ) is a 2-edge-coloured graph with the property that the edge-colours, {+,−}, form a group under multiplication. Central to ...
only the elements used are actually stored in memory. The parts of the matrix with no value areinterpreted, but not necessarily stored, as an identity value, which may or may not be the actual number zero, but possibly other values like positive or negative infinity depending on the particula...
Depending on the mutagenicity, these molecules are categorized into positive and negative classes. b, An example MUTAG node embedding process. The input features of all nodes, defined as X, are first projected onto the state space using the input matrix \({{{W}}}_{{{I}}}\), and the...
We study homomorphism problems of signed graphs from a computational point of view. A signed graph ( G , Σ ) is a graph G where each edge is given a sign, positive or negative; Σ ⊆ E ( G ) denotes the set of negative edges. Thus, ( G , Σ ) is a 2 -edge-coloured graph...
There can be positive and negative externalities, and for the purpose of this article, we will be focusing on the positive externalities. A positive externality is a phenomenon that occurs when one person or a population of people in society receives a free benefit from a product that someone ...