Results 21 to 30 of about 124,825 (308)
A connectome-based comparison of diffusion MRI schemes. [PDF]
PLoS ONE, 2013 Diffusion MRI has evolved towards an important clinical diagnostic and research tool. Though clinical routine is using mainly diffusion weighted and tensor imaging approaches, Q-ball imaging and diffusion spectrum imaging techniques have become more ...
Xavier Gigandet +9 more
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Association schemes and hypergroups [PDF]
Communications in Algebra, 2017 Section 6 is removed and the preprint is reduced to its essentials.
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Secure Privacy-Preserving Association Rule Mining With Single Cloud Server
IEEE Access, 2021 To preserve the privacy of data uploaded on the cloud, it is widely accepted to encrypt the data before uploading it. This leads to the challenge of data analysis, especially association rule mining while protecting data privacy. As one of the solutions,
Zhiyong Hong +6 more
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Commutative association schemes
European Journal of Combinatorics, 2009 Association schemes were originally introduced by Bose and his co-workers in the design of statistical experiments. Since that point of inception, the concept has proved useful in the study of group actions, in algebraic graph theory, in algebraic coding theory, and in areas as far afield as knot theory and numerical integration.
William J. Martin, Hajime Tanaka 0001
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On p-covalenced association schemes
Journal of Combinatorial Theory, Series A, 2011 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mitsugu Hirasaka, Kyoung-Tark Kim
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On association schemes with commutative thin thin residue [PDF]
Transactions on Combinatorics, 2014 The main result of this paper gives a characterization of association schemes having commutative thin thin residue. This gives a generalization of Ito's Theorem on finite groups for association schemes.
Javad Bagherian
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On the Uniqueness of the Triangular Association Scheme [PDF]
The Annals of Mathematical Statistics, 1960 Connor [3] has shown that the relations among the parameters of the triangular association scheme themselves imply the scheme if $n \geqq 9$. This result was shown by Shrikhande [6] to hold also if $n \leqq 6$. (The problem has no meaning for $n < 4$.) This paper shows that the result holds if $n = 7$, but that it is false if $n = 8$.
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On Quasi-thin Association Schemes
Journal of Combinatorial Theory, Series A, 2002 An association scheme is called quasi-thin if each of its basic relations has valency 1 or 2. In this paper three sufficient conditions for a quasi-thin scheme \((X,R)\) to have an automorphism group acting transitively on \(X\) are obtained: (i) \(O^\theta(R)\cap O_\theta(R)=\{1\}\) (Lemma 4.1), (ii) \(n_{O^\theta(R)}=2\) (Theorem 4.4), and (iii) \(R\)
Mitsugu Hirasaka, Mikhail E. Muzychuk
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Uniform Mixing and Association Schemes
The Electronic Journal of Combinatorics, 2017 We consider continuous-time quantum walks on distance-regular graphs. Using results about the existence of complex Hadamard matrices in association schemes, we determine which of these graphs have quantum walks that admit uniform mixing.First we apply a result due to Chan to show that the only strongly regular graphs that admit instantaneous uniform ...
Chris D. Godsil +2 more
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Modular adjacency algebras of dual polar schemes
, 2016 We can define the adjacency algebra of an association scheme over an arbitrary field. It is not always semisimple over a field of positive characteristic.
Shimabukuro, Osamu
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