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【数学建模】MATLAB应用实战系列(九十五)-时间序列预测应用案例(附MATLAB代码)
2022-06-21 15:53:00 【文宇肃然】
前言
时间序列预测法其实是一种回归预测方法,属于定量预测,运用过去的时间序列数据进行统计分析,推测出事物的发展趋势。
时间序列预测法将预测目标的历史数据按照时间顺序排列成时间序列,分析它们随着时间的变化趋势,并建立数学模型进行外推的定量预测方法。此篇介绍两种时间序列预测的方法,移动平均预测法和指数平滑预测法,这两种方法都适用于长期规律的时间序列。
01实例分析
我国1996~2006年的实际投资额如下表所示,利用时间序列预测方法预测2007年、2008年的投资额。且已知2007年真实投资额为137239,将预测值和实际值比较。
年份 | 1995 | 1996 | 1997 | 1998 |
投资额 | 20019.3 | 22913.5 |
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