This workflow shows step-by-step how to calculate the customer retention ratio by relative month (1, 2, 3, and so on months after the first purchase) and cohort. The cohort is defined based on the date of the first purchase, so it is a time-based cohort.
This is a companion discussion topic for the original entry at https://hub.knime.com/-/spaces/-/latest/~HT8kexMj3Xtpc9B-/