Results 81 to 90 of about 698,372 (216)

Unsupervised hyperlink prediction based on hypergraph random walk

open access: yesComplex & Intelligent Systems
Conventional link prediction methods mainly aim to estimate pairwise relationships between nodes in graph structures, typically addressing single-type interactions.
Yanlin Yang   +5 more
doaj   +1 more source

Finding an almost perfect matching in a hypergraph avoiding forbidden submatchings

open access: yesJournal of the London Mathematical Society, Volume 114, Issue 2, August 2026.
Abstract In 1973, Erdős conjectured the existence of high girth (n,3,2)$(n,3,2)$‐Steiner systems. Recently, Glock, Kühn, Lo, and Osthus and independently Bohman and Warnke proved the approximate version of Erdős' conjecture. Recently, Kwan, Sah, Sawhney, and Simkin proved Erdős' conjecture.
Michelle Delcourt, Luke Postle
wiley   +1 more source

3-uniform hypergraphs and linear cycles [PDF]

open access: yesElectronic Notes in Discrete Mathematics, 2017
Improved the writing, more explanation added and corrections ...
Beka Ergemlidze   +2 more
openaire   +5 more sources

Families of triples with high minimum degree are hamiltonian

open access: yesDiscussiones Mathematicae Graph Theory, 2014
In this paper we show that every family of triples, that is, a 3-uniform hypergraph, with minimum degree at least contains a tight Hamiltonian ...
Rödl Vojtech, Ruciński Andrzej
doaj   +1 more source

EIGENVALUES AND LINEAR QUASIRANDOM HYPERGRAPHS

open access: yesForum of Mathematics, Sigma, 2015
Let $p(k)$ denote the partition function of $k$. For each $k\geqslant 2$, we describe a list of $p(k)-1$ quasirandom properties that a $k$-uniform hypergraph can have. Our work connects previous notions on linear hypergraph quasirandomness by Kohayakawa,
JOHN LENZ, DHRUV MUBAYI
doaj   +1 more source

GBT‐SAM: A Parameter‐Efficient Depth‐Aware Model for Generalizable Brain Tumor Segmentation on mp‐MRI

open access: yesInternational Journal of Imaging Systems and Technology, Volume 36, Issue 4, July 2026.
ABSTRACT Gliomas are aggressive brain tumors that require accurate imaging‐based diagnosis, where automated segmentation plays a central role in assessing tumor morphology and guiding treatment decisions. Manual delineation of gliomas is time‐consuming and prone to variability, motivating the use of deep learning to improve consistency and alleviate ...
Cecilia Diana‐Albelda   +4 more
wiley   +1 more source

Judicious partitions of uniform hypergraphs [PDF]

open access: yesCombinatorica, 2014
The vertices of any graph with $m$ edges may be partitioned into two parts so that each part meets at least $\frac{2m}{3}$ edges. Bollobás and Thomason conjectured that the vertices of any $r$-uniform hypergraph with $m$ edges may likewise be partitioned into $r$ classes such that each part meets at least $\frac{r}{2r-1}m$ edges. In this paper we prove
openaire   +3 more sources

CF‐SBERTHet: Collaborative and Textual Knowledge Enhanced Semantic Graphs for Sparse Recommendations

open access: yesExpert Systems, Volume 43, Issue 7, July 2026.
ABSTRACT Modern e‐commerce platforms face a critical challenge: delivering accurate recommendations under extreme user–item interaction sparsity, where textual context remains systematically underutilised. Existing collaborative filtering methods degrade sharply in sparse settings, while semantic approaches fail to capture collaborative patterns ...
He Ma   +7 more
wiley   +1 more source

On Dedekind's problem, a sparse version of Sperner's theorem, and antichains of a given size in the Boolean lattice

open access: yesJournal of the London Mathematical Society, Volume 114, Issue 1, July 2026.
Abstract Dedekind's problem, dating back to 1897, asks for the total number ψ(n)$\psi (n)$ of antichains contained in the Boolean lattice Bn$B_n$ on n$n$ elements. We study Dedekind's problem using a recently developed method based on the cluster expansion from statistical physics, and as a result, obtain several new results on the number and typical ...
Matthew Jenssen   +2 more
wiley   +1 more source

Hamiltonicity and $\sigma$-hypergraphs

open access: yesTheory and Applications of Graphs, 2014
We define and study a special type of hypergraph. A $\sigma$-hypergraph $H= H(n,r,q$ $\mid$ $\sigma$), where $\sigma$ is a partition of $r$, is an $r$-uniform hypergraph having $nq$ vertices partitioned into $ n$ classes of $q$ vertices each.
Christina Zarb
doaj   +1 more source

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