search for: loss_22

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2013 May 09
0
ARMA(p,q) prediction with pre-determined coefficients
...t it also contains an extra predictor, GDP at time t. I have only 20 observations on each variable except GDP for which I know till 100 values. And most importantly,I have also calculated the coefficients in some way (these I want to use for prediction). How can I use R to predict the value of Loss_22 (say) because I cannot manually input the values of the white noise error at time 21 (since I don't know what the actual observationL_21 is going to be). I guess the arima() function can be used for this purpose and was going through it where I found : "When regressors are specified, the...