Results 141 to 150 of about 58,352 (274)

A class of inequalities relating degrees of adjacent nodes to the average degree in edge-weighted uniform hypergraphs

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2005
In 1986, Johnson and Perry proved a class of inequalities for uniform hypergraphs which included the following: for any such hypergraph, the geometric mean over the hyperedges of the geometric means of the degrees of the nodes on the hyperedge is no less
P. D. Johnson, R. N. Mohapatra
doaj   +1 more source

The complexity of recognizing $ABAB$-free hypergraphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science
The study of geometric hypergraphs gave rise to the notion of $ABAB$-free hypergraphs. A hypergraph $\mathcal{H}$ is called $ABAB$-free if there is an ordering of its vertices such that there are no hyperedges $A,B$ and vertices $v_1,v_2,v_3,v_4$ in this
Gábor Damásdi   +3 more
doaj   +1 more source

Revisiting User Mobility and Social Relationships in LBSNs: A Hypergraph Embedding Approach

open access: yesThe Web Conference, 2019
Location Based Social Networks (LBSNs) have been widely used as a primary data source to study the impact of mobility and social relationships on each other.
Dingqi Yang   +3 more
semanticscholar   +1 more source

The Existence of Quasi Regular and Bi-Regular Self-Complementary 3-Uniform Hypergraphs

open access: yesDiscussiones Mathematicae Graph Theory, 2016
A k-uniform hypergraph H = (V ;E) is called self-complementary if there is a permutation σ : V → V , called a complementing permutation, such that for every k-subset e of V , e ∈ E if and only if σ(e) ∉ E. In other words, H is isomorphic with H′ = (V ; V(
Kamble Lata N.   +2 more
doaj   +1 more source

Node Classification Method Based on Hierarchical Hypergraph Neural Network

open access: yesSensors
Hypergraph neural networks have gained widespread attention due to their effectiveness in handling graph-structured data with complex relationships and multi-dimensional interactions.
Feng Xu   +3 more
doaj   +1 more source

A Novel Algorithm for Imbalance Data Classification Based on Neighborhood Hypergraph

open access: yesThe Scientific World Journal, 2014
The classification problem for imbalance data is paid more attention to. So far, many significant methods are proposed and applied to many fields. But more efficient methods are needed still. Hypergraph may not be powerful enough to deal with the data in
Feng Hu, Xiao Liu, Jin Dai, Hong Yu
doaj   +1 more source

Multi-omics data integration analysis of prostate cancer based on sparse least partial squares regression algorithm based on hypergraph regularization [PDF]

open access: green, 2023
Ruohui Huang   +8 more
openalex   +1 more source

Hypergraph-Mlp: Learning on Hypergraphs Without Message Passing

open access: yesICASSP 2024 - 2024 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
Hypergraphs are vital in modelling data with higher-order relations containing more than two entities, gaining prominence in machine learning and signal processing. Many hypergraph neural networks leverage message passing over hypergraph structures to enhance node representation learning, yielding impressive performances in tasks like hypergraph node ...
Tang, B, Chen, S, Dong, X
openaire   +3 more sources

Hypergraphes de Petersen! Hypergraphes de Moore?

open access: yesDiscrete Mathematics, 1993
RésuméOn étudie ici des sous structures des plan projectifs finis Pg(2,n) oú n est impair. Dans ceux-ci les (n + 1)-arcs induisent une décomposition canonique.Soit E l'ensemble des points, D celui des droites, appelons X l'ensemble des points d'un (n+1)-arc.
openaire   +1 more source

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