Results 61 to 70 of about 8,171,715 (369)

Randomness of random networks: A random matrix analysis [PDF]

open access: yesEPL (Europhysics Letters), 2009
We analyze complex networks under random matrix theory framework. Particularly, we show that $ _3$ statistic, which gives information about the long range correlations among eigenvalues, provides a qualitative measure of randomness in networks. As networks deviate from the regular structure, $ _3$ follows random matrix prediction of linear behavior ...
Jalan, S., Bandyopadhyay, J.N.
openaire   +4 more sources

Model Parameter Adaption-Based Multi-Model Algorithm for Extended Object Tracking Using a Random Matrix

open access: yesSensors, 2014
Traditional object tracking technology usually regards the target as a point source object. However, this approximation is no longer appropriate for tracking extended objects such as large targets and closely spaced group objects.
Borui Li   +3 more
doaj   +1 more source

Pseudo-hermitian random matrix models: General formalism

open access: yesNuclear Physics B, 2022
Pseudo-hermitian matrices are matrices hermitian with respect to an indefinite metric. They can be thought of as the truncation of pseudo-hermitian operators, defined over some Krein space, together with the associated metric, to a finite dimensional ...
Joshua Feinberg, Roman Riser
doaj   +1 more source

Reactive Power Optimization of Distribution Network Based on Random Matrix and Historical Scenario Matching

open access: yesZhongguo dianli, 2020
Reactive power optimization and voltage management of distribution networks is very important for the optimal operation of distribution networks. By introducing big data theory into reactive power optimization of distribution networks, a reactive power ...
Ran AN   +6 more
doaj   +1 more source

Unbalanced multi-drawing urn with random addition matrix [PDF]

open access: yesArab Journal of Mathematical Sciences, 2020
In this paper, we consider a two color multi-drawing urn model. At each discrete time step, we draw uniformly at random a sample of m balls (m≥1) and note their color, they will be returned to the urn together with a random number of balls depending on ...
Aguech Rafik, Selmi Olfa
doaj   +1 more source

Practical challenges in data‐driven interpolation: Dealing with noise, enforcing stability, and computing realizations

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView., 2023
Summary In this contribution, we propose a detailed study of interpolation‐based data‐driven methods that are of relevance in the model reduction and also in the systems and control communities. The data are given by samples of the transfer function of the underlying (unknown) model, that is, we analyze frequency‐response data.
Quirin Aumann, Ion Victor Gosea
wiley   +1 more source

Massive MIMO as a Big Data System: Random Matrix Models and Testbed

open access: yesIEEE Access, 2015
This paper has two parts. The first one deals with how to use large random matrices as building blocks to model the massive data arising from the massive (or large-scale) multiple-input, multiple-output (MIMO) system. As a result, we apply this model for
Changchun Zhang, Robert C. Qiu
doaj   +1 more source

Data‐driven performance metrics for neural network learning

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView., 2023
Summary Effectiveness of data‐driven neural learning in terms of both local mimima trapping and convergence rate is addressed. Such issues are investigated in a case study involving the training of one‐hidden‐layer feedforward neural networks with the extended Kalman filter, which reduces the search for the optimal network parameters to a state ...
Angelo Alessandri   +2 more
wiley   +1 more source

Quaternions, números complexos e os ensembles de matrizes aleatórias

open access: yesRevista Brasileira de Ensino de Física
Neste trabalho dois ensembles de matrizes aleatórias são construídos com detalhes refinados. São eles: o Ensemble Gaussiano Unitário cujos elementos das matrizes são números complexos e o Ensemble Gaussiano Simplético, cujos elementos das matrizes são ...
A.C Bertuola
doaj   +1 more source

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