Results 251 to 260 of about 178,715 (297)

Fuzzy cluster analysis of high-field functional MRI data

Artificial Intelligence in Medicine, 2003
Functional magnetic resonance imaging (fMRI) based on blood-oxygen level dependent (BOLD) contrast today is an established brain research method and quickly gains acceptance for complementary clinical diagnosis. However, neither the basic mechanisms like coupling between neuronal activation and haemodynamic response are known exactly, nor can the ...
Windischberger, C, Barth, M, Lamm, C, Schroeder, L, Bauer, H, Gur, RC, Moser, E   +6 more
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Membership-function-dependent stability analysis of fuzzy-model-based control systems using fuzzy Lyapunov functions

Information Sciences, 2013
This paper investigates the stability of fuzzy-model-based (FMB) control system, formed by a T–S fuzzy model and a fuzzy controller connected in a close loop, based on a fuzzy-Lyapunov function. A general FMB control system that the T–S fuzzy model and fuzzy controller not sharing the same premise membership functions and/or the same number of fuzzy ...
Lam, Hak Keung, Lauber, Jimmy
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Stability analysis of fuzzy multivariablesystems: Vector Lyapunov function approach

IEE Proceedings - Control Theory and Applications, 1997
The paper describes a design methodology to analyze the stability of a class of nonlinear systems which can be described through a fuzzy dynamic model. The considered model is based on the decomposition of the state space region of the closed loop fuzzy system in \(N\) subregions with \(N\) interacting closed loop subystems. The stability conditions of
Cheng, C. M., Rees, N. W.
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Analysis and design of fuzzy reduced-dimensional observer and fuzzy functional observer

Fuzzy Sets and Systems, 2001
The study concerns control problems with observers and a separation principle in Takagi-Sugeno (T-S) fuzzy models. The class of T-S models under consideration assumes the following form (both continuous and discrete-time versions of the model are considered) \[ \text{-if }s_1\text{ is } M_{1i}\text{ and\dots and }s_g\text{ is }M_{pi}\text{ then }dx/dt=
Ma, Xiao-Jun, Sun, Zeng-Qi
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Sensitivity analysis for image represented by fuzzy function

Soft Computing, 2018
The standard image representation can be considered as obsolete in image processing area since it was designed mainly to visualize images and not to support image processing algorithms. For that reason, seeking alternative image representations becomes an important issue.
Petr Hurtik, Nicolás Madrid, Martin Dyba   +2 more
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Uncertainty Propagation Analysis of Fuzzy Uncertain Structures Involving Imprecise Membership Functions

International Journal of Computational Methods, 2022
Uncertain structures may exhibit fuzzy uncertainty involving imprecise membership function (FuIMF). In this study, the uncertain parameters in FuIMF case are characterized as fuzzy variables, whereas the key parameters of their membership functions are treated as interval variables rather than exact values.
Lü, Hui, Zheng, Zebin, Huang, Xiaoting, Shangguan, Wen-Bin, Zhao, Kegang   +4 more
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FUNCTIONAL ANALYSIS AND T-S FUZZY SYSTEM DESIGN

IFAC Proceedings Volumes, 2005
This paper introduces the idea of viewing fuzzy modelling and fuzzy system design from a functional analysis perspective. Fuzzy transforms, which are based on the generalised Fourier transform in functional analysis, are proposed. It is demonstrated that, mathematically, a T-S fuzzy model is equivalent to a fuzzy transform.
D.T. Pham, R.X. Qiu
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Model-free functional MRI analysis using improved fuzzy cluster analysis techniques

SPIE Proceedings, 2004
Conventional model-based or statistical analysis methods for functional MRI (fMRI) are easy to implement, and are effective in analyzing data with simple paradigms. However, they are not applicable in situations in which patterns of neural response are complicated and when fMRI response is unknown.
Oliver Lange, Anke Meyer-Baese, Axel Wismueller, Monica Hurdal, DeWitt Sumners, Dorothee Auer   +5 more
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Local stability analysis of continuous-time Takagi–Sugeno fuzzy systems: A fuzzy Lyapunov function approach

Information Sciences, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lee, Dong Hwan, Joo, Young Hoon, Tak, Myung Hwan   +2 more
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Analysis of approximation of continuous fuzzy functions by multivariate fuzzy polynomials

Fuzzy Sets and Systems, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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