I want to cluster time-series concerning sales of products. In the database I have 26weeks after launching each products and units sold each week.
One of the method of clustering is to cluster parameters of growth curve fitted to time-series.
Can somebody tell me what should I do before fitting logistic curve to time-series? Should I use standardization, create model to each time series, use lsm to count parameters and then cluster them?
I would be grateful for any explanation.