What are some data mining case studies that use simple data mining algorithms?

A. Bitukov answers: Xiaohua Hu wrote excellent case study. It was published in Journal of Applied Intelligence, “A Data Mining Approach for Retailing Bank Customer Attrition Analysis”.

Also, here are a couple good case studies from the Journal of Database Marketing:

“Time to fly: An approach to segmentation and modelling customer dynamics in the travel sector” by Nigel Magson and David Dipple

“Predictive modelling applied to the retention of mortgages” by Leonard Paas