Results 21 to 30 of about 422,657 (323)

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

On coincidence points for vector mappings [PDF]

open access: yesRussian Mathematics, 2016
For mappings acting in the product of metric spaces we propose a concept of vector covering. This concept is a natural extension of the notion of covering formappings inmetric spaces. The statements on the solvability of systems of operator equations are proved for the case when the left-hand side of an equation is a value of a vector covering mapping ...
E. S. Zhukovskiy, E. S. Zhukovskiy
openaire   +3 more sources

Approximate Coincidence Point of Two Nonlinear Mappings

open access: yesJournal of Mathematics, 2013
We study the approximate coincidence point of two nonlinear functions introduced by Geraghty in 1973 and Mizoguchi and Takahashi (ℳ𝒯-function) in 1989.
Debashis Dey   +2 more
doaj   +4 more sources

On Changing Fixed Points and Coincidences to Roots [PDF]

open access: yesProceedings of the American Mathematical Society, 1992
The coincidence problem, finding solutions to f ( x ) = g ( x ) f(x) = g(x) , can sometimes be converted to a root problem, finding solutions to σ ( x ) = a \sigma (x) = a .
Robin Brooks, Peter Wong
openaire   +2 more sources

Coincidence invariants and higher Reidemeister traces [PDF]

open access: yes, 2015
The Lefschetz number and fixed point index can be thought of as two different descriptions of the same invariant. The Lefschetz number is algebraic and defined using homology.
Ponto, Kate
core   +1 more source

On Some Coincidence Best Proximity Point Results

open access: yesJournal of Mathematics, 2021
In this paper, we discuss some (coincidence) best proximity point results for generalized proximal contractions and λ−μ-proximal Geraghty contractions in controlled metric type spaces. To clarify our study, various examples are given and some conclusions
Naeem Saleem   +3 more
doaj   +1 more source

Nonunique Coincidence Point Results via Admissible Mappings

open access: yesJournal of Function Spaces, 2021
This paper is aimed at presenting some coincidence point results using admissible mapping in the framework of the partial b-metric spaces. Observed results of the article cover a number of existing works on the topic of “investigation of nonunique fixed ...
Erdal Karapınar   +2 more
doaj   +1 more source

Coincidence summing correction methods and influence factors of γ spectrum

open access: yesHe jishu, 2022
BackgroundIn the radiation environmental quality measurement or emergency measurement, one of the factors that influence the measurement results of γ spectrum activity is the cascade coincidence summing effect of multienergy nuclides.PurposeThis study ...
ZHANG Lei
doaj   +1 more source

New Existence Results and Generalizations for Coincidence Points and Fixed Points without Global Completeness

open access: yesAbstract and Applied Analysis, 2013
Some new existence theorems concerning approximate coincidence point property and approximate fixed point property for nonlinear maps in metric spaces without global completeness are established in this paper.
Wei-Shih Du
doaj   +1 more source

On common fixed point of generalized contractive mappings in metric spaces [PDF]

open access: yesSurveys in Mathematics and its Applications, 2012
Existence of common fixed points is established for two self-mappings satisfying a generalized contractive condition. The presented results generalize several well known comparable results in the literature. We also study well-posedness of a common fixed
Mujahid Abbas, Hassen Aydi
doaj  

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