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Entropy measures of distance matrix [PDF]

open access: yesDiscrete Mathematics Letters, 2022
Bonchev and Trinajstic defined two distance based entropy measures to measure the molecular branching of molecular graphs in 1977 [Information theory, distance matrix, and molecular branching, J. Chem. Phys., 38 (1977), 4517–4533]. In this paper we use these entropy measures which are based on distance matrices of graphs.
Bünyamin Şahin, Abdulgani Şahin
doaj   +7 more sources

A cospectral construction for the generalized distance matrix [PDF]

open access: greenSpecial Matrices
The generalized distance matrix of a graph is a matrix in which the (i,j)\left(i,j)th entry is a function, ff, of the distance between vertex ii and vertex jj.
Friesen Ori   +5 more
doaj   +2 more sources

Distance to the nearest stable Metzler matrix [PDF]

open access: green2017 IEEE 56th Annual Conference on Decision and Control (CDC), 2017
This paper considers the non-convex problem of finding the nearest Metzler matrix to a given possibly unstable matrix. Linear systems whose state vector evolves according to a Metzler matrix have many desirable properties in analysis and control with regard to scalability.
James Anderson
openalex   +5 more sources

Squared distance matrix of a weighted tree

open access: yesElectronic Journal of Graph Theory and Applications, 2019
Let T be a tree with vertex set {1, …, n} such that each edge is assigned a nonzero weight. The squared distance matrix of T,  denoted by Δ,  is the n × n matrix with (i, j)-element d(i, j)2,  where d(i, j) is the sum of the weights of the edges on the ...
Ravindra B. Bapat
doaj   +3 more sources

A Distance-Preserving Matrix Sketch

open access: yesJournal of Computational and Graphical Statistics, 2022
38 pages, 13 ...
Wilkinson, Leland, Luo, Hengrui
openaire   +2 more sources

Multi-distance support matrix machines [PDF]

open access: yesPattern Recognition Letters, 2019
Real-world data such as digital images, MRI scans and electroencephalography signals are naturally represented as matrices with structural information. Most existing classifiers aim to capture these structures by regularizing the regression matrix to be low-rank or sparse.
Yunfei Ye, Dong Han
openaire   +2 more sources

Squared distance matrices of trees with matrix weights

open access: yesAKCE International Journal of Graphs and Combinatorics, 2023
Let T be a tree on n vertices whose edge weights are positive definite matrices of order s. The squared distance matrix of T, denoted by Δ, is the ns × ns block matrix with [Formula: see text], where d(i, j) is the sum of the weights of the edges in the ...
Iswar Mahato, M. Rajesh Kannan
doaj   +1 more source

Analysis of amino acids network based on transition and transversion mutation of codons [PDF]

open access: yesNetwork Biology, 2021
In this paper, we have developed a network of 20 amino acids based on a distance matrix of amino acids. This distance matrix is obtained by considering the transition and transversion mutation of codons.
Tazid Ali, Chandra Borah
doaj  

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