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    Solar energy prediction

    Will do that, thanks.
  2. O

    Solar energy prediction

    Hi, Do you mean you have data of 365 days but you try to predict each day based on the previous 30 days, and then compare the prediction to the actual result? Yes. Each day means 24 observation of energy and weather variables. 30 days is the best, as I increase or decreased the MAE get higher...
  3. O

    Solar energy prediction

    Hi, I really appreciate all your help, but one more question. What is the solution if there is correlation between the Y's, that is there is relation between the residuals? do I need to use Lagged Y, that is Yt-1 as independent variable? Note: My data is 30 days history and one day ahead, I am...
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    Solar energy prediction

    Hi, I did, and there is relation of error as I can see from the Q-Q plot. is there another way to check that? and if there is relation what is the solution? Many thanks.
  5. O

    Solar energy prediction

    Yes, the perdition is done hourly for 24 hours ahead, using 30 days historical data. using MLR, input variables are weather variables, and the output is the energy.
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    Solar energy prediction

    Hi, Thank you for your answer. But I am talking about dependent variable and not independent variables, So I am talking about correlation between Y's and not X's. If I have auto-correlation between Y's (found using acf function), what is the solution? is it just to include the lagged Y's as...
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    Lagged dependent variable

    Hi, What is lagged dependent variable? If I have time series data, my training dataset consist of weather variables as input variables and solar energy as output variables, then I build the model and predict energy output for second day using only weather variables. Will I have lagged dependent...
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    Solar energy prediction

    Hi, I am prediction one-day-ahead solar energy output using 30 days historical data. The data sets are hourly, so the prediction is done hourly from sunrise to sunset. I have doe the prediction using sliding window technique, When I am predicting 01/06, I am using 30 days historical data (from...