Results 21 to 30 of about 6,731 (280)

Query-sensitive similarity measure for content-based image retrieval using meta-heuristic algorithm

open access: yesJournal of King Saud University: Computer and Information Sciences, 2018
Content based image retrieval (CBIR) systems retrieve images linked to the query image (QI) from enormous databases. The feature sets extracted by the present CBIR systems are limited. This limits the systems’ effectiveness.
Mutasem K. Alsmadi
doaj   +1 more source

On Subsequential Limit Points of a Sequence of Iterates [PDF]

open access: yesProceedings of the American Mathematical Society, 1981
In this note we study the properties of the subsequential limit points of a sequence of iterates of mappings which are contractive over two consecutive elements of an orbit.
Maiti, M., Babu, A. C.
openaire   +2 more sources

How tropical are seven- and eight-particle amplitudes?

open access: yesJournal of High Energy Physics, 2020
We study tropical Grassmanians Tr(k, n) in relation to cluster algebras, and assess their applicability to n-particle amplitudes for n = 7, 8. In N $$ \mathcal{N} $$ = 4 super Yang-Mills theory, we first show that while the totally positive part of Tr(4,
Niklas Henke, Georgios Papathanasiou
doaj   +1 more source

From set-valued dynamical processes to fractals [PDF]

open access: yesOpuscula Mathematica
We present a general theory of topological semiattractors and attractors for set-valued semigroups. Our results extend and unify those previously obtained by Lasota and Myjak.
Grzegorz Guzik, Grzegorz Kleszcz
doaj   +1 more source

Moving Target Detection in Multi-Static GNSS-Based Passive Radar Based on Multi-Bernoulli Filter

open access: yesRemote Sensing, 2020
Over the past few years, the global navigation satellite system (GNSS)-based passive radar (GBPR) has attracted more and more attention and has developed very quickly. However, the low power level of GNSS signal limits its application.
HongCheng Zeng   +5 more
doaj   +1 more source

Iterated Prisoners Dilemma with limited attention [PDF]

open access: yesCondensed Matter Physics, 2014
8 pages, 3 ...
??etin, U., Bingol, H.O.
openaire   +4 more sources

Modelling pandemic behaviour using an economic multiplayer game

open access: yesScientific Reports, 2022
During a pandemic, isolating oneself from the community limits viral transmission and helps avoid repeated societal lockdowns. This entails a social dilemma—either distance oneself from others for the benefit of the public good or free-ride and enjoy the
Simon T. van Baal   +2 more
doaj   +1 more source

Adaptive Singular Evolutive Interpolated Kalman filter and its application to data assimilation in 2D Water pollution model

open access: yesVietnam Journal of Mechanics, 2022
This study promotes a new algorithm for estimating the water pollution propagation with the primary goal of providing more reliable and high quality estimates to decision makers.
Tran Thu Ha   +2 more
doaj   +1 more source

Limit theorems for iterated random functions [PDF]

open access: yesJournal of Applied Probability, 2004
We study geometric moment contracting properties of nonlinear time series that are expressed in terms of iterated random functions. Under a Dini-continuity condition, a central limit theorem for additive functionals of such systems is established. The empirical processes of sample paths are shown to converge to Gaussian processes in the Skorokhod space.
Wu, Wei Biao, Shao, Xiaofeng
openaire   +1 more source

Strong limit theorems for anisotropic self-similar fields

open access: yesModern Stochastics: Theory and Applications, 2014
Our paper starts from presentation and comparison of three definitions for the self-similar field. The interconnection between these definitions has been established.
V. Makogin, Yu. Mishura
doaj   +1 more source

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