Results 31 to 40 of about 1,215,022 (288)

Higher-order Graph Convolutional Network with Flower-Petals Laplacians on Simplicial Complexes [PDF]

open access: yesAAAI Conference on Artificial Intelligence, 2023
Despite the recent successes of vanilla Graph Neural Networks (GNNs) on various tasks, their foundation on pairwise networks inherently limits their capacity to discern latent higher-order interactions in complex systems.
Yiming Huang   +3 more
semanticscholar   +1 more source

A Study of the Factors Influencing the Construction Risk of Steel Truss Bridges Based on the Improved DEMATEL–ISM

open access: yesBuildings, 2023
To enhance the safety management of steel-truss-bridge construction, an evaluation method based on the improved DEMATEL–ISM was proposed to analyze the risk factors involved in such construction.
Xudong Wang   +4 more
doaj   +1 more source

First-order logic axiomatization of metric graph theory [PDF]

open access: yes, 2022
The main goal of this note is to provide a First-Order Logic with Betweenness (FOLB) axiomatization of the main classes of graphs occurring in Metric Graph Theory, in analogy to Tarski's axiomatization of Euclidean geometry. We provide such an axiomatization for weakly modular graphs and their principal subclasses (median and modular graphs, bridged ...
arxiv   +1 more source

Triadic balance and network evolution in predictive models of signed networks. [PDF]

open access: yesSci Rep
This paper introduces a novel approach for identifying dynamic triadic transformation processes, applied to five networks: three undirected and two directed. Our method significantly enhances the prediction accuracy of network ties.
Lee HW, Lu PC, Sha HC, Huang H.
europepmc   +2 more sources

Control and Optimization Algorithms for Lattice Power Grids With Multiple Grid-Forming Converters

open access: yesFrontiers in Energy Research, 2022
The growth of renewable energies, together with their power converter interfaces, reshapes power systems into more-electronics power systems. Along with this paradigm shift is the requirement of grid formation by grid-tied power converters.
Daniel Wei Zhang   +2 more
doaj   +1 more source

Graphs with convex balls [PDF]

open access: yesGeometriae Dedicata 217, 67 (2023), 2022
In this paper, we investigate the graphs in which all balls are convex and the groups acting on them geometrically (which we call CB-graphs and CB-groups). These graphs have been introduced and characterized by Soltan and Chepoi (1983) and Farber and Jamison (1987).
arxiv   +1 more source

Hodge theory-based biomolecular data analysis

open access: yesScientific Reports, 2022
Hodge theory reveals the deep intrinsic relations of differential forms and provides a bridge between differential geometry, algebraic topology, and functional analysis.
Ronald Koh Joon Wei   +3 more
doaj   +1 more source

Network dynamics on graphops

open access: yesNew Journal of Physics, 2020
In this article we report on a novel way to incorporate complex network structure into the analysis of interacting particle systems. More precisely, it is well-known that in well-mixed/homogeneous/all-to-all-coupled systems, one may derive mean-field ...
Christian Kuehn
doaj   +1 more source

Image emotion analysis based on semantic concepts

open access: yesXibei Gongye Daxue Xuebao, 2023
With the increasing number of users express their emotions via images on social media, image emotion analysis attracts much attention of researchers. For the ambiguity and subjectivity of emotion, image emotion analysis is more challenging than other ...
YANG Hansen   +4 more
doaj   +1 more source

Modelling and Analysis of Characteristics of a Piezoelectric-Actuated Micro-/Nano Compliant Platform Using Bond Graph Approach

open access: yesMicromachines, 2018
The piezoelectric-actuated flexure-based compliant platform is commonly adopted in many fields of micro and nanotechnology. In this paper, bond graph modeling, and kinematic and dynamic characteristics of a piezoelectric-actuated micro-/nano compliant ...
Chao Lin   +4 more
doaj   +1 more source

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