get_trend_decay: Generate trend discounts

In opoyc/autoforecast: Forecast Development Kit

Description

Regression based models use a linear trend to account for the change in level over time. In practical terms, it is measured as a vector of equidistant integers. Often, the trend component can significantly impact the forecast in the long run. One way to solve this issue is to apply a "discount" on the trend vector, henceforth, reducing the marginal effect on the predictions.

Usage

get_trend_decay(y_var_length, trend_decay, horizon = NULL, lag = NULL)

Arguments

y_var_length	integer: Length of the time series
trend_decay	numeric: How rapidly the trend reach the stability.
horizon	integer: How far in time to produce trend discounts.
lag	integer: Lag to be used for cross-validation purposes.

Value

Numerical vector.

Author(s)

Obryan Poyser

Examples

## Not run: 
get_trend_discounts()

## End(Not run)

opoyc/autoforecast documentation built on May 18, 2021, 1:29 a.m.