Results 11 to 20 of about 111,952 (197)

Clustered Hybrid Wind Power Prediction Model Based on ARMA, PSO-SVM, and Clustering Methods

open access: yesIEEE Access, 2020
Wind power prediction is the key technology to the safe dispatch and stable operation of power system with large-scale integration of wind power. In this work, based on the historical data of wind power, wind speed and temperature, the autoregressive ...
Yurong Wang, Dongchuan Wang, Yi Tang
doaj   +3 more sources

Implied Volatility Prediction Based on Different Term Structures: An Empirical Study of the SSE 50 ETF Options Market from High-Frequency Data [PDF]

open access: yesE3S Web of Conferences, 2021
This article focuses on the implied volatility forecast of the SSE 50 ETF options market from June 1, 2017, to August 30, 2019, and constructs AR (1) model and ARMA-GARCH model based on liquidity characteristics to compare and analyze the prediction ...
Yang Wenqi, Ma Jingkun
doaj   +1 more source

Pendugaan Imbal Hasil Saham dengan Model Autoregressive Moving Average

open access: yesJambura Journal of Mathematics, 2021
ABSTRAK Seorang investor pada umumnya berharap untuk membeli suatu saham dengan harga yang rendah dan menjual saham tersebut dengan harga yang lebih tinggi untuk memperoleh imbal hasil yang tinggi.
Grifin Ryandi Egeten   +2 more
doaj   +1 more source

Estimation of ARMA Model Order via Artificial Neural Network for Modeling Physiological Systems

open access: yesIEEE Access, 2020
Model order estimation is the most important but challenging step for system identification using an autoregressive moving average (ARMA) model. In this paper, we propose an artificial neural network (ANN) structure to estimate the best model order for ...
Md-Billal Hossain   +2 more
doaj   +1 more source

Minimum Message Length in Hybrid ARMA and LSTM Model Forecasting

open access: yesEntropy, 2021
Modeling and analysis of time series are important in applications including economics, engineering, environmental science and social science. Selecting the best time series model with accurate parameters in forecasting is a challenging objective for ...
Zheng Fang   +3 more
doaj   +1 more source

EMD-GM-ARMA Model for Mining Safety Production Situation Prediction

open access: yesComplexity, 2020
In order to improve the prediction accuracy of mining safety production situation and remove the difficulty of model selection for nonstationary time series, a grey (GM) autoregressive moving average (ARMA) model based on the empirical mode decomposition
Menglong Wu   +5 more
doaj   +1 more source

Investigating psychometric properties of the arm activity measure – Thai version (ArmA-TH) sub‐scales using the Rasch model

open access: yesBMC Medical Research Methodology, 2021
Background This study investigated the ArmA-TH sub-scale measurement properties based on item response theory using the Rasch model. Methods Patients with upper limb hemiplegia resulting from cerebrovascular and other brain disorders were asked to ...
Montana Buntragulpoontawee   +6 more
doaj   +1 more source

Groundwater Depth Forecasting Using a Coupled Model

open access: yesDiscrete Dynamics in Nature and Society, 2021
Accurate and reliable prediction of groundwater depth is a critical component in water resources management. In this paper, a new method based on coupling wavelet decomposition method (WA), autoregressive moving average (ARMA) model, and BP neural ...
Manfei Zhang   +3 more
doaj   +1 more source

Auto Regressive Moving Average (ARMA) Modeling Method for Gyro Random Noise Using a Robust Kalman Filter

open access: yesSensors, 2015
To solve the problem in which the conventional ARMA modeling methods for gyro random noise require a large number of samples and converge slowly, an ARMA modeling method using a robust Kalman filtering is developed.
Lei Huang
doaj   +1 more source

Survey of Temporal and Special Changes of Nisan Rainfalls and Prediction of Them in East Azarbayjan Province [PDF]

open access: yesنشریه جغرافیا و برنامه‌ریزی, 2015
In this paper, Nisan rainfalls of East Azerbaijan Province in the period of 1980 to 2009 were investigated. Initially changes of Nisan rainfalls trend were analyzed using the non-parametric Mann-Kendall test and Sen's estimator slope that are the most ...
Tahere Jalali Ansaroodi   +3 more
doaj  

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