Test to find similar products

time_series
correlation
clustering

#1

I have a set of products and its demands in market for few months. Some of the products are predecessors of another. How do i identify which is which predecessor? What statistical/analytical tests would help me identify them?


#2

concept of Product life cycle can help you find the patterns from the available data


#3

Clustering techniques should help, although it would be more efficient to formulate it as a multiclass classification problem.