deterministic trend造句

The most common cause of violation of stationarity are trends in mean, which can be due either to the presence of a unit root or of a deterministic trend.
In the latter case of a deterministic trend, the process is called a trend stationary process, and stochastic shocks have only transitory effects which are mean-reverting ( i . e ., the mean returns to its long-term average, which changes deterministically over time according to the trend ).
It's difficult to find deterministic trend in a sentence. 用deterministic trend造句挺难的