نتایج جستجو برای: neural fuzzy model

تعداد نتایج: 2387828  

Journal: :iranian journal of fuzzy systems 2014
maryam mosleh

in this paper, a novel hybrid method based on learning algorithmof fuzzy neural network and newton-cotesmethods with positive coefficient for the solution of linear fredholm integro-differential equation of the second kindwith fuzzy initial value is presented. here neural network isconsidered as a part of large field called neural computing orsoft computing. we propose alearning algorithm from ...

Abazar Solgi, Behdad Falamarzi Heidar Zarei

Precipitation forecasting due to its random nature in space and time always faced with many problems and this uncertainty reduces the validity of the forecasting model. Nowadays nonlinear networks as intelligent systems to predict such complex phenomena are widely used. One of the methods that have been considered in recent years in the fields of hydrology is use of wavelet transform as a moder...

1994
Detlef Nauck

This paper presents a fuzzy perceptron as a generic model of multilayer fuzzy neural networks, or neural fuzzy systems, respectively. This model is suggested to ease the comparision of diierent neuro{fuzzy approaches that are known from the literature. A fuzzy perceptron is not a fuzziication of a common neural network architecture, and it is not our intention to enhance neural learning algorit...

K. Meenakshi M. Syed Ali M. Usha N. Gunasekaran

This paper focuses on the problem of finite-time boundedness and finite-time passivity of discrete-time T-S fuzzy neural networks with time-varying delays. A suitable Lyapunov--Krasovskii functional(LKF) is established to derive sufficient condition for finite-time passivity of discrete-time T-S fuzzy neural networks. The dynamical system is transformed into a T-S fuzzy model with uncertain par...

Journal: :مهندسی صنایع 0
مهدی خاشعی دانشگاه صنعتی اصفهان مهدی بیجاری دانشگاه صنعتی اصفهان

artificial neural networks (anns) are flexible computing frameworks and universal approximators that can be applied to a wide range of time series forecasting problems with a high degree of accuracy. however, despite of all advantages cited for artificial neural networks, they have data limitation and need to the large amount of historical data in order to yield accurate results. therefore, the...

2009
CONSTANTIN VOLOSENCU

The paper presents a short review how to use feedforward neural networks for non-linear system identification, with application at the neural implementation of a fuzzy system. In this application the inputoutput transfer characteristics of the fuzzy system are used to evaluate the accuracy of the identification results expressed for a neuro-fuzzy model. This method could be used for identificat...

Journal: :مهندسی صنایع 0
سیدعلی ترابی دانشیار دانشکده مهندسی صنایع - پردیس دانشکده های فنی- دانشگاه تهران شیما پاشاپورنظری فارغ التحصیل کارشناسی ارشد مهندسی صنایع - پردیس دانشکده های فنی- دانشگاه تهران نجمه نشاط دانشجوی دکترای مهندسی صنایع- دانشگاه تریبت مدرس

in this paper, a new approach of modeling for artificial neural networks (ann) models based on the concepts of ann and fuzzy regression is proposed. for this purpose, we reformulated ann model as a fuzzy nonlinear regression model while it has advantages of both fuzzy regression and ann models. hence, it can be applied to uncertain, ambiguous, or complex environments due to its flexibility. in ...

Journal: :international journal of finance, accounting and economics studies 0
ali asghar anvary rostamy professor, accounting and finance department, faculty of management and economics, tarbiat modares university (tmu). nor addin mousazadeh abbasi master in accounting, faculty of management and economics, tarbiat modares university (tmu). mohammad ali aghaei assistant professor, accounting and finance department, faculty of management and economics, tarbiat modares university mahdi moradzadeh fard assistant professor, accounting and finance department, islamic azad university, karaj branch.

the jamor purpose of the present research is to predict the total stock market index of tehran stock exchange, using a combined method of wavelet transforms, fuzzy genetics, and neural network in order to predict the active participations of finance market as well as macro decision makers.to do so, first the prediction was made by neural network, then a series of price index was decomposed by w...

Journal: :مرتع و آبخیزداری 0
مجتبی نساجی زواره استادیار موسسه آموزش عالی علمی کاربردی جهاد کشاورزی، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران باقر قرمز چشمه استادیار موسسه آموزش عالی علمی کاربردی جهاد کشاورزی، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران فاطمه رحیم زاده عضو هیئت علمی پژوهشکده هواشناسی، تهران

daily constant discharges are needed estimating daily discharge in the hydrological model. the different number of statistical years, statistical deficiencies, and measurement error leads to the formation of time series with an uncommon time base. hence the reconstruction of daily discharge data is of paramount importance. in this research, daily discharge was reconstructed in two stages in one...

Journal: :تحقیقات آب و خاک ایران 0
روح اله تقی زاده دانشجوی دکتری، دانشگاه تهران شهلا محمودی استاد، دانشگاه تهران علی اکبرزاده دانشجوی کارشناسی ارشد، دانشگاه تهران هادی رحیمی لاکه کارشناس ارشد، دانشگاه گیلان

the functions employed in an estimation of costly measured soil properties from either widely available or more easily obtained basic soil properties are referred to as pedotransfer functions. to develop pedotransfer functions, one can use multivariate regression, neural networks and neuro-fuzzy models. to make a comparison among the mentioned models, 153 soil samples were collected from soils ...

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