A New Approach for Reconstruction of IMFs of Decomposition and Ensemble Model for Forecasting Crude Oil Prices

Table 1

values of ADF unit root test and order of selected ARIMA models for all data.

Data	Series	ADF test value	ADF test 1^st diff value	Order of ARIMA model
Brent	Daily	0.990	<0.010	(1, 1, 0)
	Weekly	0.990	<0.010	(2, 1, 2)
WTI	Daily	0.349	<0.010	(3, 1, 2)
	Weekly	0.054	<0.010	(5, 1, 5)