灰色模型

灰色马尔科夫模型

年份

实际产量/万吨

预测产量/万吨

相对误差

预测产量/万吨

相对误差

2004

87.1700

87.1700

0.0000

2005

95.9600

57.4727

0.4011

90.4440

0.0575

2006

109.1900

65.5319

0.3998

103.1268

0.0555

2007

111.1940

74.7213

0.3280

117.5880

0.0575

2008

110.9470

85.1992

0.2321

104.8219

0.0552

2009

114.7515

97.1465

0.1534

119.5208

0.0416

2010

117.2088

110.7691

0.0549

114.2480

0.0253

2011

121.8091

126.3019

0.0369

122.5697

0.0062

2012

139.8893

144.0129

0.0295

139.7573

0.0009

2013

159.2306

164.2075

0.0313

159.3551

0.0008

2014

187.3402

187.2339

0.0006

193.1142

0.0308

2015

216.8851

213.4892

0.0157

220.1941

0.0153

2016

235.8412

243.4262

0.0322

236.2329

0.0017

2017

280.1365

277.5612

0.0092

286.2784

0.0219

2018

369.0110

316.4829

0.1423

389.3736

0.0552

2019

441.9843

360.8625

0.1835

443.9745

0.0045