نتایج جستجو برای: time series modeling

تعداد نتایج: 2437899  

Journal: :Journal of Japan Society of Civil Engineers, Ser. F4 (Construction and Management) 2014

Journal: :Econometrics and Statistics 2022

Generative moment matching networks (GMMNs) are introduced as dependence models for the joint innovation distribution of multivariate time series (MTS). Following popular copula–GARCH approach modeling dependent MTS data, a framework based on GMMN–GARCH is presented. First, ARMA–GARCH utilized to capture serial within each univariate marginal series. Second, if number large, principal component...

Journal: :Proceedings of the AAAI Conference on Artificial Intelligence 2020

ژورنال: علوم آب و خاک 2012
جهانگیر عابدی کوپائی, , سید علیرضا گوهری, , اسماعیل دودانگه, ,

Due to the important role of climatic parameters such as radiation, temperature, precipitation and evaporation rate in water resources management, this study employed time series modeling to forecast climatic parameters. After normality test of the parameters, nonparametric Mann-Kendall test was used in order to do trend analysis of data at P-value<0.05. Relative humidity and evaporation (with ...

Journal: :تحقیقات اقتصادی 0
غلامعلی شرزه ای دانشیار دانشکدة اقتصاد دانشگاه تهران مهدی احراری پژوهشگر اقتصادی دانشکدة اقتصاد دانشگاه تهران حسن فخرایی کارشناس ارشد اقتصاد محیط زیست دانشکدة اقتصاد دانشگاه تهران

conventionally, regression and time series analyses have been employed in modeling water demand forecasts. in recent years, the relatively new technique of neural networks (nns) has been proposed as an efficient tool for modeling and forecasting. the objective of this study is to investigate the relatively new technique of gmdh – type neural networks for the use of forecasting long – term urban...

Journal: :فیزیک زمین و فضا 0
علیرضا آزموده اردلان دانشیار، گروه مهندسی نقشه برداری، قطب علمی مهندسی نقشه برداری و مقابلة با سوانح طبیعی، پردیس دانشکده های فنی، دانشگاه تهران، ایران محمدجواد طوریان دانش آموخته کارشناسی ارشد، گروه مهندسی نقشه برداری، پردیس دانشکده های فنی، دانشگاه تهران، ایران

based on 11 years of topex/poseidon satellite altimetry and coastal tide gauge sea level observations, four tidal constituents, namely o1, k1, m2 and s2, are modeled for the persian gulf and oman sea using a time-wise approach according to the following details. by selecting the cycle 100 as the reference, 772 points on 12 paths along the track of the altimetry satellite footprints over the per...

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