Comments (2)
If you want a discussion you should post this as a comment on the youtube video. Nobody will see it here.
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@krinkere I see your point, however is the same thing what you do in [S[VA[RIMA]X]] and all of its variations and what you do here.
Why? you might ask.
Let's use a simple VAR as illustration
When you use VAR you fit your model with some temporal data and the formulation of the problem use/consider 'p' times in the past (p value that you selected depende on the AIC) to forecast future. So when you use forecast, the model use the last 'p' observations of your training set to forecast the future. Then, it is actually using data you provided
In the same fashion LSTM works here, now we are more explicit to determine how many steps on the future we would like to predict. So if you train your RNN with a time horizont 'k' your forecasting will be accurate in those 'k' steps if that makes sense.
A real example, suppose you work in a factory that sells 't-shirts' and they want to forecast the demand of these t-shirts, so you decide to build a model to help your chief out with the resource management. The VAR model to predict how many t-shirts are being sold today afternoon , will use 'p' days in the past based again in the AIC.
But when you build LSTM is "kind of the opposite", you define your problem based on the conditions today how many t-shirts will I sell tomorrow?
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Related Issues (20)
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