Irene Song

Multi-Echelon Inventory Management for a Non-Stationary Capacitated Distribution Network

  • Alvaro Maggiar
  • Irene Song
  • Alp Muharremoglu
    • Categories Applications - OR and Management Sciences, Dynamic Programming, Supply Chain Management Tags , ,

    We present an inventory management solution for a non-stationary capacitated multi-echelon distribution network involving thousands of products. Assuming backlogged sales, we revisit and leverage the seminal multi-echelon inventory management results in the literature to establish the structural properties of the problem, and derive an efficient and practical solution method. In particular, we describe how the … Read more

    Joint Variable Selection for Data Envelopment Analysis via Group Sparsity

  • Zhiwei (Tony) Qin
  • Irene Song
    • Categories Applications - OR and Management Sciences, Convex Optimization Tags , , ,

    This study develops a data-driven group variable selection method for data envelopment analysis (DEA), a non-parametric linear programming approach to the estimation of production frontiers. The proposed method extends the group Lasso (least absolute shrinkage and selection operator) designed for variable selection on (often predefined) groups of variables in linear regression models to DEA models. … Read more