Results 51 to 60 of about 40,185 (227)

t-designs on hypergraphs

open access: yesDiscrete Mathematics, 1976
AbstractA t-design T=(X, B), denoted by (λ; t, k, v), is a system B of subsets of size k from a v-set X, such that each t-subset of X is contained in exactly λ elements of B. A hypergraph H=(Y, E) is a finite set Y where E=(Ei: iϵI) is a family of subsets (which we assume here are distinct) of Y such that Ei≠Ø, iϵl, and ⋃Ei=Y.
Earl S. Kramer, Dale M. Mesner
openaire   +2 more sources

Smallworldness in hypergraphs

open access: yesJournal of Physics: Complexity, 2023
Abstract Most real-world networks are endowed with the small-world property, by means of which the maximal distance between any two of their nodes scales logarithmically rather than linearly with their size. The evidence sparkled a wealth of studies trying to reveal possible mechanisms through which the pairwise interactions amongst the ...
Raghav, Tanu   +2 more
openaire   +4 more sources

Semisupervised Hypergraph Discriminant Learning for Dimensionality Reduction of Hyperspectral Image

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Semisupervised learning is an effective technique to represent the intrinsic features of a hyperspectral image (HSI), which can reduce the cost to obtain the labeled information of samples.
Fulin Luo   +4 more
doaj   +1 more source

Constructible hypergraphs

open access: yesDiscrete Mathematics, 1991
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

CoRoFR: Community Detection of Feature Graph Improves Feature Selection Using Robust Fuzzy Rough Set

open access: yesAdvanced Intelligent Systems, EarlyView.
In machine learning, features often function as communities in many tasks, especially in medicine. However, existing feature selection methods struggle to mine feature collaborations, which can boost predictive performance. Moreover, they are noise‐sensitive, leading to suboptimal feature selection and accuracy degradation.
Duanyang Feng   +4 more
wiley   +1 more source

EasyHypergraph: an open-source software for fast and memory-saving analysis and learning of higher-order networks

open access: yesHumanities & Social Sciences Communications
Higher-order relationships exist widely across different disciplines. In the realm of real-world systems, significant interactions involving multiple entities are common.
Bodian Ye   +7 more
doaj   +1 more source

Multipartite entanglement detection for hypergraph states

open access: yes, 2017
We study the entanglement properties of quantum hypergraph states of $n$ qubits, focusing on multipartite entanglement. We compute multipartite entanglement for hypergraph states with a single hyperedge of maximum cardinality, for hypergraph states ...
Bruß, Dagmar   +4 more
core   +1 more source

Steiner Triple Systems With High Discrepancy

open access: yesJournal of Combinatorial Designs, EarlyView.
ABSTRACT In this paper, we initiate the study of discrepancy questions for combinatorial designs. Specifically, we show that, for every fixed r ≥ 3 $r\ge 3$ and n ≡ 1 , 3 ( mod 6 ) $n\equiv 1,3\,(\mathrm{mod}\,6)$, any r $r$‐colouring of the triples on [ n ] $[n]$ admits a Steiner triple system of order n $n$ with discrepancy Ω ( n 2 ) ${\rm{\Omega }}({
Lior Gishboliner   +2 more
wiley   +1 more source

A Note on Set Systems with no Union of Cardinality 0 modulo m [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2003
Alon, Kleitman, Lipton, Meshulam, Rabin and Spencer (Graphs. Combin. 7 (1991), no. 2, 97-99) proved, that for any hypergraph F ={F 1,F 2,…, F d(q-1)+1 }, where q is a prime-power, and d denotes the maximal degree of the hypergraph, there exists
Vince Grolmusz
doaj   +2 more sources

Analysis of quantum error correction with symmetric hypergraph states

open access: yes, 2018
Graph states have been used to construct quantum error correction codes for independent errors. Hypergraph states generalize graph states, and symmetric hypergraph states have been shown to allow for the correction of correlated errors. In this paper, it
Bruß, Dagmar   +2 more
core   +1 more source

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