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灰色系统模型预测茶叶产量方法初探(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
1988年02期
Page:
43-53
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
PREDICTION OF TEA LEAVES YIELD WITH GREY SYSTEM MODELS
Article ID:
1000-2006(1988)02-0043-11
Author(s):
Xue Jianhui
Department of Forestry
Keywords:
Grey system modelGM (11) GM (21) Tea leaves yield
Classification number :
-
DOI:
10.3969/j.jssn.1000-2006.1988.02.006
Document Code:
A
Abstract:
The reaction function of the second system has been derived from the equations of differentiation and systematic state-space expression when the roots of the property equation are two conjugate complex ones. The results obtained from these two methods are identical. Based on the data of tea leaves yield (1959~1973) in Chuanbu Tea Plantation in Yixing, Jiangsu, grey model (1,1) and grey model (2,1) have been built to predict tea leaves yield since 1973. Results show that GM (1,1) is higher than GM (2,1) in precision of prediction.

References

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Last Update: 1900-01-01