Some approximation properties of adaptive fuzzy systems with variable universe of discourse

Z Long, X Liang, L Yang - Information Sciences, 2010 - Elsevier
approximation propertiesapproximation properties of fuzzy systems in the form of (10) in
any sample step. The following section discusses the convergence properties of approximation

Approximation performance of the nonlinear hybrid fuzzy system based on variable universe

G Wang, Y Li, X Li - Granular Computing, 2017 - Springer
… on variable universe can increase approximation accuracy of … fuzzy system based on
variable universe breaks previous … achieves approximation accuracy by initializing fine universe

Variable gravity universe

C Wetterich - Physical Review D, 2014 - APS
… Even though de Sitter solutions remain a good approximation we will include … property is
called the “slow roll approximation” for inflation. We may continue the slow roll approximation to …

Determining the equation of state of the expanding universe using a new independent variable

T Nakamura, T Chiba - The Astrophysical Journal, 2001 - iopscience.iop.org
… equation of state of the universe, we propose to use a new independent variable where …
approximation in a power-series expansion of f. We adopt the following Pade-like approximation

The varying cosmological constant: a new approximation to the Friedmann equations and universe model

AM Öztaş, E Dil, ML Smith - Monthly Notices of the Royal …, 2018 - academic.oup.com
… functions of the three variables, H 2 , ρ and universe volume, a … property of our current and
future Universe. (It was only later that Einstein became interested in the history of our Universe.…

Rough set model based on variable universe

Q Kong, X Chang - CAAI Transactions on Intelligence …, 2022 - Wiley Online Library
… of variable universe. Then, some interesting properties of this model, such as approximation
sets, … We mainly introduce the partition on variable universe and its related properties in this …

Nonlinear equation of correlation function of galaxies in an expanding universe and the solution in linear approximation

Y Zhang, B Li - Physical Review D, 2021 - APS
… These properties were previously predicted in the static case [14,15], and also hold in the …
ri may be not what we expect since it is a random variable, thus we do not know if the point ri …

Characteristic properties of two different viscous cosmology models for the future universe

BD Normann, I Brevik - Modern Physics Letters A, 2017 - World Scientific
… ) fluid is after all an approximation to the real world, applicable … viscous cosmic fluid in the
late universe, ie the period from … the thermodynamic variables of the system. Whether we take …

A frozen-flow approximation to the evolution of large-scale structures in the Universe

S Matarrese, F Lucchin, L Moscardini… - Monthly Notices of the …, 1992 - academic.oup.com
… fluid, discusses the Zel'dovich algorithm and defines our new approximation. Section 3 deals
with the physical properties of our method and presents two simple models which allow us …

The concept of a linguistic variable and its application to approximate reasoning—II

LA Zadeh - Information sciences, 1975 - Elsevier
… fuzzy variable is characterized by a triple (X, U, R (X;u)). in which X is the name of the variable;
U is a universe … This concludes our discussion of some of the properties of fuzzy variables