An exact column-generation approach for the lot-type design problem --   extended abstract
  We consider a fashion discounter that supplies any of its many branches with an integral multiple of lots whose size assortment structure stems from a set of many applicable lot-types. We design a column generation algorithm for the optimal approximation of the branch and size dependent demand by a supply using a bounded number of lot-types. 
Miriam Kie{\ss}ling, Sascha Kurz, and J\"org Rambau
math.OC cs.DS