multi-item

Joint Pricing and Production: A Fusion of Machine Learning and Robust Optimization

  • Georgia Perakis
  • Qinshen Tang
  • Peng Xiong
  • Melvyn Sim
    • Categories Applications - OR and Management Sciences, Robust Optimization Tags , , , ,

    We integrate machine learning with distributionally robust optimization to address a two-period problem for the joint pricing and production of multiple items. First, we generalize the additive demand model to capture both cross-product and cross-period effects as well as the demand dependence across periods. Next, we apply K-means clustering to the demand residual mapping based … Read more

    The multi-item capacitated lot-sizing problem with setup times and shortage costs

  • Nabil Absi
  • Safia Kedad-Sidhoum
    • Categories Branch and Cut Algorithms, Production and Logistics Tags , , , , , ,

    We address a multi-item capacitated lot-sizing problem with setup times and shortage costs that arises in real-world production planning problems. Demand cannot be backlogged, but can be totally or partially lost. The problem is NP-hard. A mixed integer mathematical formulation is presented. Our approach in this paper is to propose some classes of valid inequalities … Read more