中文说明：
时间序列的自回归预测模型是一种线性回归模型，该模型使用前一时期某个时间的随机变量的线性组合来描述未来某个时间的随机变量。
English Description：
The autoregressive prediction model of time series is a linear regression model that describes random variables at a later time by using the linear combination of random variables at some earlier time.