Results 11 to 20 of about 383,430 (227)

F-Transform Inspired Weak Solution to a Boundary Value Problem

open access: yesAxioms, 2019
We propose and show efficiency of a new fuzzy-transform-based numerical method of solving ordinary differential equations with boundary conditions. The focus is on weak solutions and a special construction of a two-parameterized family of test functions.
Linh Nguyen   +2 more
doaj   +1 more source

Local versions of the Wiener–Lévy theorem

open access: yesМатематичні Студії, 2022
Let $h$ be a real-analytic function on the neighborhood of some compact set $K$ on the plane, and let $f(y)$ be the Fourier--Stieltjes transform of a complex measure of a finite total variation without singular components on the Euclidean space.
S. Yu. Favorov
doaj   +1 more source

A Fast Multilevel Fuzzy Transform Image Compression Method [PDF]

open access: yes, 2019
We present a fast algorithm that improves on the performance of the multilevel fuzzy transform image compression method. The multilevel F-transform (for short, MF-tr) algorithm is an image compression method based on fuzzy transforms that, compared to ...
DI Martino, Ferdinando, Sessa
core   +1 more source

A Seneta's Conjecture and the Williamson Transform [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2023
Considering slowly varying functions (SVF), %Seneta (2019) Seneta in 2019 conjectured the following implication, for $\alpha\geq1$,$$\int_0^x y^{\alpha-1}(1-F(y))dy\textrm{\ is SVF}\ \Rightarrow\ \int_{0}^x y^{\alpha}dF(y)\textrm{\ is SVF, as $x\to\infty$
Edward Omey, Meitner Cadena
doaj   +1 more source

F-transforms for the definition of contextual fuzzy partitions [PDF]

open access: yes, 2019
Fuzzy partitions can be defined in many different ways, but usually, it is done taking into account the whole universe. In this paper, we present a method to define fuzzy partitions according to those elements in the universe holding certain fuzzy ...
B Bouchon   +8 more
core   +1 more source

Review of modern numerical methods for a simple vanilla option pricing problem [PDF]

open access: yes, 2018
Option pricing is a very attractive issue of financial engineering and optimization. The problem of determining the fair price of an option arises from the assumptions made under a given financial market model.
Holčapek, Michal   +4 more
core   +1 more source

Bitcoin Analysis and Forecasting through Fuzzy Transform

open access: yesAxioms, 2020
Sentiment analysis to characterize the properties of Bitcoin prices and their forecasting is here developed thanks to the capability of the Fuzzy Transform (F-transform for short) to capture stylized facts and mutual connections between time series with ...
Maria Letizia Guerra   +2 more
doaj   +1 more source

Swarm and Evolutionary Algorithms in Image Compression by F-Transform

open access: yesIEEE Access, 2023
This article investigates the application of swarm and evolutionary algorithms, namely the SOMA, DE, and GA, for optimizing the F-transform-based image compression.
Nguyen Le Toan Nhat Linh, Quoc Bao Diep
doaj   +1 more source

Finite-size effects on a lattice calculation [PDF]

open access: yes, 2008
We study in this paper the finite-size effects of a non-periodic lattice on a lattice calculation. To this end we use a finite lattice equipped with a central difference derivative with homogeneous boundary conditions to calculate the bosonic mass ...
Aroca   +13 more
core   +1 more source

Advanced F-Transform-Based Image Fusion

open access: yesAdvances in Fuzzy Systems, 2012
We propose to use the modern technique of the F-transform in order to show that it can be successfully applied to the image fusion. We remind two working algorithms (SA—the simple algorithm, and CA—the complete algorithm) which are based on the F ...
Marek Vajgl   +2 more
doaj   +1 more source

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