Results 11 to 20 of about 1,666 (170)
MathematicsKnowledge graph embedding (KGE) has been identified as an effective method for link prediction, which involves predicting missing relations or entities based on existing entities or relations.
Lin Shi +5 more
doaj +3 more sources
, 2022 Inspired by circular complex interval arithmetic, an arithmetic for closed balls in Rn is pursued. In this sense, the properties of certain operations on closed balls in Rn, some of which related either to the Hadamard product of vectors or to the 2-fold
Beites, P.D. +6 more
core +1 more source
Approximating Subadditive Hadamard Functions on Implicit Matrices [PDF]
, 2016 An important challenge in the streaming model is to maintain small-space approximations of entrywise functions performed on a matrix that is generated by the outer product of two vectors given as a stream.
Vorsanger, Gregory +2 more
core +1 more source
Efficient Differentially Private F₀ Linear Sketching [PDF]
, 2021 A powerful feature of linear sketches is that from sketches of two data vectors, one can compute the sketch of the difference between the vectors. This allows us to answer fine-grained questions about the difference between two data sets. In this work we
Pagh, Rasmus, Stausholm, Nina Mesing
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Low-Coherence Frames From Group Fourier Matrices [PDF]
, 2017 Many problems in areas such as compressive sensing and coding theory seek to design a set of equal-norm vectors with large angular separation. This idea is essentially equivalent to constructing a frame with low coherence. The elements of such frames can
Thill, Matthew +3 more
core +1 more source
Inequalities for the Perron root related to Levinger's theorem [PDF]
, 1998 For the Perron roots of square nonnegative matrices A, B, and A + D−1BTD, where D is a diagonal matrix with positive diagonal entries, the inequality ϱ (A + D−1BTD) ⩾ ϱ(A) + ϱ(B) is proved under the assumption that A and B have a common unordered pair of
Kolotilina, L.Yu. +3 more
core +2 more sources
On the real linear polarization constant problem
, 2006 The present paper deals with lower bounds for the norm of products of linear forms. It has been proved by J. Arias-de-Reyna [2], that the so-called n(th) linear polarization constant c(n)(C-n) is n(n/2), for arbitrary n is an element of N. The same value
Matolcsi, Máté +3 more
core +1 more source
, 2023 We obtain a large number of degree and distance-based topological indices, graph and Laplacian spectra and the corresponding polynomials, entropies and matching polynomials of n-dimensional hypercubes through the use of Hadamard symmetry and recursive ...
Krishnan Balasubramanian
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Neural Fields for Highly Accelerated 2D Cine Phase Contrast MRI
Advanced Science, EarlyView.ABSTRACT 2D cine phase contrast (CPC) MRI provides quantitative information on blood velocity and flow within the human vasculature. However, data acquisition is time‐consuming, motivating the reconstruction of the velocity field from undersampled measurements to reduce scan times. In this work, neural fields are proposed as a continuous spatiotemporal
Pablo Arratia +7 more
wiley +1 more source
Modular Hadamard martrices and related designs
, 1973 A square matrix with entries ± 1 is called a modular Hadamard matrix if the inner product of each two distinct row vectors is a multiple of some fixed (positive) integer.
Butson, A.T, Marrero, O
core +1 more source