Theo Albrecht supermarkets, with the motto "The best quality at the lowest price," and now known by its acronym, Aldi. Forbes has estimated Theo's fortune from the supermarket chain as approximately £11 billion. Theodor and Karl Albrecht split the Aldi Company they founded in 1960 after a dispute about whether to sell cigarettes. The supermarket divided into two legally separate operating units with two geographical locations. Theodor's Aldi Nord set to operate in the north of Germany and Karl's Aldi Süd, set to operate in Germany's south. The progression of Aldi under Karl and Theodor Albrecht stands as one of Germany’s greatest
Perekrestok (supermarket chain) connected. In November 2017, X5 introduced machine learning to bolster targeted marketing at the Perekrestok supermarket chain, and developed personalised offers for all members of the Perekrestok Club loyalty program. The company leverages machine learning to group customers into segments based on common features and create offers for them. The system analyses groups of customers and designs personalised marketing campaigns based on demographic and several hundred behavioural factors, such as: frequency of purchases and ticket size, customer preferences, lifestyle fundamentals, acceptable price levels, favourite product categories and preferred shopping hours. Customer sensitivity to offers is predicted using various analytical models.