Folks, have been analyzing customer lifetime value of a firm. Not sure, if I am in the right direct. Appreciate any help.
The problem is as follows:
A customer cohort that started during a particular period, have data on sessions and purchases. Sessions indicate the lifetime and purchases the value derived. Have derived the survival function from Kaplan-Meier curve, and integrated as follows:
Sum ( Rev_t PurchaseProb_t retentionProb_t/discountRate_t)
But, when I calculate the CLV for each customer and total it, it does not add up to total revenue. Any thoughts.