seasonal models - use of ARIMA models for seasonal dataforecasting, using seasonal ARIMA models - and model for the fitted time seriesforecast equation, its workings - sales and forecasts based on model estimation, conditional least squares (MINITAB) and maximum likelihood methods...
2016 was ARIMA( 1,0,1) ×( 0,1,1)_(12),and the equation of the model was( 1-B_(12))( 1-0.574B) xt=( 1-0. 441B)( 1 + 0. 919B_(12)) ε_t. The parameters were as follows: RMSE = 4. 15,MAE = 2. 59,Theil IC = 0. 143,BP= 0. 045,VP = 0. 225,CP = 0...
目的:探讨ARIMA乘积季节模型和Holt-Winters季节模型在我国梅毒月发病率预测中的应用价值。方法:以2005年1月至2015年12月梅毒月发病率数据为基础,运用SPSS 22.0和Eviews 8.0分别建立ARIMA乘积季节模型和Holt-Winters季节模型,采用2016年1至6月的实际数据验证模型,评价指标是预测误差和平均绝对误差(MAE)。选择精度较高模型...
Langevin equation is ... S Agwuegbo,E Onugha,AA Akintunde 被引量: 0发表: 2020年 Calculating the autocovariances of fractional ARIMA model Consider a stationary and invertible process {Yt} following a (long memory) fractional ARIMA(p, d, q) model, φ(B)(1 − B) d Yt = θ(B)ε...
An association analysis of temperatures of countries or regions with epidemiological variables collected at the beginning of March 2020 and a time series predictive analysis with the Autoregressive Integrated Moving Average (ARIMA) model showed COVID-19 speed of contagion decreased with increasing ...
Hence, the PM equation based on the weather parameters was utilized to compute the monthly ET0 over the research locations. Model selection process for data analysis In this research, twenty-four (24) machine learning models were constructed to predict the Standardized Precipitation Evapotranspiration ...
Forecasting typhoid fever incidence in the Cordillera administrative region in the Philippines using seasonal ARIMA modelsThe prevalence of typhoid fever in developing countries such as the Philippines calls for a need for accurate forecasting ... OR Cawiding,GMR Natividad,CV Bato,... 被引量: 0发表...
16.On Numerical Methods for Solving Nonlinear Matrix Equation X+A~*X~(-n)A=Q非线性矩阵方程X+A~*X~(-n)A=Q的理论与数值解法 17.Forecast for Highway Passenger Carrying Capacity Based on Multiple ARIMA Model;基于乘法ARIMA模型的公路客运量预测 ...
ARIMA modelascosporesChestnut blightCryphonectria parasiticadisseminationtransfer functionInfected barks of chestnut blight cankers, caused by Cryphonectria parasitica , were collected from a naturally infected orchard and incubated at different temperatures. Cankers started to discharge ascospores about a week ...
Use ˆst=˜st/‾st to estimate the seasonal component of a multiplicative model (that is, constrain the component to fluctuate approximately around one). References [1] Dagum, E. B. The X-11-ARIMA Seasonal Adjustment Method. Number 12–564E. Statistics Canada, Ottawa, 1980. [2] Find...