نتایج جستجو برای: gmdh model

تعداد نتایج: 2104648  

Journal: :Journal of Japan Society for Fuzzy Theory and Systems 1995

2002
A. G. Ivakhnenko

In the case of substantial noise, i.e., for inaccurate and incomplete data, the use of the Group Method of Data Handling (GMDH) algorithm leads to sharp and rather deep minimums of dependency of external criterion of accuracy measured on testing sample on the complexity of model structure. This minimum indicates the optimal model. In practice, however, if the noise is just noticeable, i.e., if ...

2009
Godfrey C. Onwubolu Alok Sharma

This paper proposes a new intrusion detection methodology based on hybrid of differential evolution (DE) and group method of data handling (GMDH). It focuses on intrusion detection based on system call sequences using text processing techniques. The hybrid DE-GMDH is used to classify a process as either normal or abnormal. This work presents the application of PCA and hybrid DE-GMDH to modeling...

Journal: :international journal of nanoscience and nanotechnology 2015
a. azari s. marhemati

in this study, a model for estimating the nfs thermal conductivity by using a gmdh-pnn has been investigated. nfs thermal conductivity was modeled as a function of the nanoparticle size, temperature, nanoparticle volume fraction and the thermal conductivity of the base fluid and nanoparticles. for this purpose, the developed network contains 8 layers with 2 inputs in each layer and also trainin...

2016
Mohammad Najafzadeh Siow-Yong Lim

An improved neuro-fuzzy based group method of data handling using the particle swarm optimization (NF-GMDH-PSO) is developed as an adaptive learning network to predict the localized scour downstream of a sluice gate with an apron. The input characteristic parameters affecting the scour depth are the sediment size and its gradation, apron length, sluice gate opening, and the flow conditions upst...

2010
V. Ravi M. Carr M. Vasu

In this paper, we propose new computational intelligence sequential hybrid architectures involving Genetic Programming (GP) and Group Method of Data Handling (GMDH) viz. GP-GMDH, GMDH-GP and recurrent architecture for Genetic Programming (GP) for software cost estimation. Three linear ensembles based on (i) arithmetic mean (ii) geometric mean and (iii) harmonic mean are also developed. We also ...

Journal: :Earth Science Informatics 2015
Mohammad Najafzadeh Siow Yong Lim

An improved neuro-fuzzy based group method of data handling using the particle swarm optimization (NF-GMDH-PSO) is developed as an adaptive learning network to predict the localized scour downstream of a sluice gate with an apron. The input characteristic parameters affecting the scour depth are the sediment size and its gradation, apron length, sluice gate opening, and the flow conditions upst...

Journal: :Transactions of the Society of Instrument and Control Engineers 1986

ژورنال: آبخیزداری ایران 2022

Understanding the Stage–Discharge relationship is of great importance in the management and planning of water resources, as well as the design of hydraulic structures, the organization of rivers, and the planning of flood warning systems. With the advancement of science and increasing the speed of computing, new methods called intelligent systems have been introduced, the use of which can be a ...

Journal: :Engineering Applications of Computational Fluid Mechanics 2021

Accurate prediction of water level (WL) is essential for the optimal management different resource projects. The development a reliable model WL remains challenging task in resources management. In this study, novel hybrid models, namely, Generalized Structure-Group Method Data Handling (GS-GMDH) and Adaptive Neuro-Fuzzy Inference System with Fuzzy C-Means (ANFIS-FCM) were proposed to predict d...

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