The log transformation is often used to convert time series that ... as shown in the following example, which uses an AR(2) model to forecast the log of a series Y: data in; set in; ylog = log( y ); ...

An old log, forgotten in the garden—until a skilled ... With every precise cut and artistic touch, the transformation unfolds like magic. This isn’t just woodworking—it’s pure creativity ...

is the Box-Cox transformation. Parameter estimation is performed using the transformed series. The transformed model predictions and confidence limits are then obtained from the transformed ...