Halkos, George; Kevork, Ilias - Volkswirtschaftliche Fakultät, … - 2006
, the random walk produces wider prediction intervals. This picture changes when we forecast ARIMA (0,2,1) values for θ …In this paper we show that the random walk model with drift behaves like an ARIMA (0,2,1) when its parameter θ is … greater but close to –1. Using the random walk for predicting future values of an ARIMA (0,2,1) process, we find out that when …