نتایج جستجو برای: مدل arma

تعداد نتایج: 122331  

2009
Chongjun Fan Sha Yao

There have been a lot of works relating to time series analysis. In this paper, the Bayesian analysis method for ARMA model is discussed and an application example is given. Firstly, the Bayesian theoretic results about AR model and the determination approach for model order are obtained. Then, the approach are presented for Bayesian analysis of MA and ARMA models. As its application, the forec...

1999
Adrian Trapletti Friedrich Leisch Kurt Hornik

In this note we consider the autoregressive moving average recurrent neural network ARMA-NN(1; 1) process. We show that in contrast to the pure autoregressive process simple ARMA-NN processes exist which are not irreducible. We prove that the controllability of the linear part of the process is sufficient for irreducibility. For the irreducible process essentially the shortcut weight correspond...

Journal: :Antimicrobial agents and chemotherapy 2009
Ying Liu Bei Zhang Qing Cao Weichun Huang Lisong Shen Xuan Qin

Two cases of pulmonary infection due to strains of multidrug-resistant Klebsiella pneumoniae were investigated. Beta-lactamase determinants, such as bla(IMP-4) and bla(SHV-12), and the 16S rRNA methyltransferase-encoding gene armA were detected in these plasmid-bearing organisms. The integron-borne bla(IMP-4) and armA contained intervening sequences highly related to those of a Vibrio cholerae ...

2016
Amel Ayad Mourad Drissi Claire de Curraize Chloé Dupont Alain Hartmann Sébastien Solanas Eliane Siebor Lucie Amoureux Catherine Neuwirth

The aim of this study, was to characterize the extended-spectrum-β-lactamases (ESBLs) producing clinical strains of Escherichia coli isolated between January 2009 and June 2012 from Algerian hospitals and to determine the prevalence of 16S rRNA methylase among them. Sixty-seven ESBL-producers were detected among the 239 isolates included: 52 CTX-M-15-producers, 5 CTX-M-3-producers, 5 CTX-M-1-pr...

آب به عنوان یکی از مهم‌ترین منابع تأمین نیاز بشر در زندگی روزمره نقش حیاتی ایفا می‌کند. لذا آگاهی از میزان تقاضای مورد نیاز آب جهت اعمال سیاست‌گذاری‌های لازم در راستای مدیریت تقاضا، از اهمیت ویژه‌ای برخوردار می‌باشد. در این مقاله، تقاضای روزانه آب شهر تهران برای یک دوره هفت ساله با استفاده از روش‌های غیرخطی شبکه‌ عصبی مصنوعی و فرایند خطی ARMA مدل‌سازی گردید و در ادامه تقاضای روزانه آب شهری برای...

2013
Niloufar Zarinabad Nooralipour Amedeo Chiribiri Gilion Hautvast Andreas Schuster Matthew Sinclair Jeroen P. H. M. van den Wijngaard Nicolas Smith Jos A. E. Spaan Maria Siebes Marcel Breeuwer Eike Nagel

Cardiovascular magnetic resonance (CMR) perfusion data are suitable for quantitative measurement of myocardial blood flow. The goal of perfusionCMR postprocessing is to recover tissue impulse-response from observed signalintensity curves. While several deconvolution techniques are available for this purpose, all of them use models with varying parameters for the representation of the impulse-re...

2006
Manuel D. Ortigueira António J. Serralheiro

1 UNINOVA and DEE, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Campus da FCT da UNL, Quinta da Torre, 2829-516 Caparica, Portugal 2 INESC ID, Rua Alves Redol, 9, 2o, 1000-029 Lisboa, Portugal 3 L2F INESC ID, Rua Alves Redol, 9, 2o, 1000-029 Lisboa, Portugal 4 Academia Militar, Rua Gomes Freire, 1150-175 Lisboa, Portugal Abstract – In this paper the modeling of Fractional ...

2014
Md. Rabiul Islam Md. Rashed-Al-Mahfuz Shamim Ahmad Md. Khademul Islam Molla Taher S. Hassan

This paper presents a subband approach to financial time series prediction. Multivariate empirical mode decomposition MEMD is employed here for multiband representation of multichannel financial time series together. Autoregressivemoving average ARMA model is used in prediction of individual subband of any time series data. Then all the predicted subband signals are summed up to obtain the over...

2009
J. P. Dubois

This paper reports the feasibility of the ARMA model to describe a bursty video source transmitting over a AAL5 ATM link (VBR traffic). The traffic represents the activity of the action movie "Lethal Weapon 3" transmitted over the ATM network using the Fore System AVA-200 ATM video codec with a peak rate of 100 Mbps and a frame rate of 25. The model parameters were estimated for a single video ...

2003
F. Martínez Antonio Guillamón J. J. Martínez

In this paper, we purpose a theoretical development of a metric for speech classification based on cepstral features obtained from ARMA models. Thus working with an ARMA model as a complex rational function, is possible to define a metric d(M,M´) between two stable ARMA models M, M´by means of the cepstrum coefficients of the models. This metric may be calculated algorithmically as a finite sum...

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