摘要
用GM(1,1)模型对天长市2010,2015,2020年的需水量进行了预测,预测结果分别为1934.4,2537.6,3075.7万m3.对预测结果的精度校验表明,模型的预测精度等级为一级,模型可靠、合理.
The water demand of Tianchang city on 2010,2015,2020 is predicted by GM(1,1) model,the result separately is 1 934.4×104,2537.6×104,3 075.7×104 m3.The accuracy verification shows that the forecast precision is the first-level,the model is reliable and reasonable.
出处
《华北水利水电学院学报》
2008年第6期7-9,共3页
North China Institute of Water Conservancy and Hydroelectric Power
关键词
天长市
GM(1
1)模型
需水量
预测
精度检验
Tianchang city
GM（1
1） model
water demand
forecast
precision examination
