Research Article

An ARMA Type Fuzzy Time Series Forecasting Method Based on Particle Swarm Optimization

Table 5

The forecasts produced by the proposed methods.

YearsFuzzy forecastsDefuzzified forecasts

19720.87680.50000.14750.04580.58240.00000.454013458.81
19730.98390.50000.14750.04580.58240.00000.454013458.81
19740.50000.71280.17090.17090.50000.50000.500014700.56
19750.99990.23590.99990.04580.41690.00000.454015395.91
19760.70840.35260.94630.04580.03120.00000.454015379.31
19770.70840.35260.96790.04580.01280.00000.454015379.31
19780.57670.35260.57670.04580.31780.00000.454015673.54
19790.51220.50000.72120.00790.98240.00000.454016412.94
19800.00780.04100.21080.00310.50000.00780.500017217.39
19810.00090.00350.21080.00040.90190.00000.454016412.94
19820.00260.50000.99390.00060.11440.00000.002615379.31
19830.70840.35260.97690.04580.01270.00000.454015379.31
19840.70840.35260.88230.04580.07370.00000.454015379.31
19850.69050.35260.69050.04580.19190.00000.454015517.4
19860.50000.35260.50000.50000.15990.50000.500015987.15
19870.51220.50000.72120.01630.93880.00000.454016412.94
19880.00100.00450.21080.00040.50000.00100.500017318.67
19890.31980.12810.21080.05040.24320.07670.451619075.31
19900.31980.00170.14460.00090.00250.00000.454019075.31
19910.31980.00730.14460.00400.01040.00000.454019075.31
19920.31980.00770.14460.00420.01100.00000.454019075.31