Results 21 to 30 of about 422,657 (323)
Data‐driven performance metrics for neural network learning
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]
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
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]
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]
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
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
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
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
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]
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