Good day. I am new to machine learning.
May I get some advice on data preprocessing?
The attached image is sample data, which the first column is time step, second column is item_ID, and the last column is speed.
My question is, how can I create a sequences of time series based on each item_ID?
I don’t want the the sequences is mix of both item.
I am aware of creating cyclic sequences. But the length of time step for each item is different.
May I get some advice from you all?
Thank you very much.