例句與造句

1. Unit root processes may sometimes be confused with trend-stationary.
2. The process with hysteresis is a unit root process, which in its simplest form can be characterized as
3. Due to this characteristic, unit root processes are also called "'difference stationary . "'
4. If a root of the process's characteristic equation is larger than 1, then it is called an "'explosive process "', even though such processes are often inaccurately called unit roots processes.
5. In this case the non-stationarity can be removed from the data by first differencing, and the differenced variable z _ t = y _ t-y _ { t-1 } will have a long-run mean of " c " and hence no drift . But even in the absence of the parameter " c " ( that is, even if " c " = 0 ), this unit root process exhibits drift, and specifically stochastic drift, due to the presence of the stationary random shocks " u " " t " : a once-occurring non-zero value of " u " is incorporated into the same period's " y ", which one period later becomes the one-period-lagged value of " y " and hence affects the new period's " y " value, which itself in the next period becomes the lagged " y " and affects the next " y " value, and so forth forever.
6. It's difficult to find unit root process in a sentence. 用unit root process造句挺難的