黄金
黃金
황금
GOLD JOURNAL
2015年
7期
6-8
,共3页
GM(1,1)模型%无偏 GM(1,1)模型%新陈代谢%黄金价格预测
GM(1,1)模型%無偏 GM(1,1)模型%新陳代謝%黃金價格預測
GM(1,1)모형%무편 GM(1,1)모형%신진대사%황금개격예측
GM(1,1)model%unbiased GM(1,1)model%metabolism%gold price prediction
随着信息系统的发展,对黄金价格建立了基于新陈代谢理论的无偏灰色 GM(1,1)预测模型。该模型是对 GM(1,1)模型的改进,在不断补充新信息的同时,及时地去掉老信息,避免随着信息的增加,建模运算量不断增大的困难。实证结果表明,该模型预测精度优于 GM(1,1)模型及无偏 GM(1,1)模型的预测精度。
隨著信息繫統的髮展,對黃金價格建立瞭基于新陳代謝理論的無偏灰色 GM(1,1)預測模型。該模型是對 GM(1,1)模型的改進,在不斷補充新信息的同時,及時地去掉老信息,避免隨著信息的增加,建模運算量不斷增大的睏難。實證結果錶明,該模型預測精度優于 GM(1,1)模型及無偏 GM(1,1)模型的預測精度。
수착신식계통적발전,대황금개격건립료기우신진대사이론적무편회색 GM(1,1)예측모형。해모형시대 GM(1,1)모형적개진,재불단보충신신식적동시,급시지거도로신식,피면수착신식적증가,건모운산량불단증대적곤난。실증결과표명,해모형예측정도우우 GM(1,1)모형급무편 GM(1,1)모형적예측정도。
With the development of information system,an unbiased GM(1,1)prediction model of gold price is established based on the metabolism theory.The model is an improved version of GM(1,1)with the ability to update data while eliminate outdated data to avoid increased modeling calculation workload.Empirical study results show that the model prediction accuracy is better than that of GM(1,1)model and unbiased GM(1,1)model.