Thank you very much for your advices. But it is part of my diploma thesis (where I evaluate the use of prediction methods for tuning an database system) using regression methods to predict values. I know that there are problems using the hole time serie to forecast something.
My approach is the following:
- monitoring performance metrics of an IT-system
- create a regression model using the last x snapshots (where x is a constant!!!)
- apply this model for the next time value to forecast the next performance value
If I am not wrong, I implicitly use the same idea like your explained window operator. In the meantime, I found another way to set my input parameters by using the database where all my values are saved.
But now, I have another problem: How can I access the predicted value to use it in my java program???
I really hope that someone can explain it to me...