MILP Model for a Resilient Dairy Supply Chain with Inter-Plant Reconfiguration

This repository provides the complete mathematical formulation and a representative numerical instance of a mixed-integer linear programming (MILP) model for the operational planning of a dairy supply chain under disruption scenarios. The model integrates procurement, production, inventory, transportation, outsourcing, and inter-plant reconfiguration decisions within a multi-period and multi-scenario framework. A key contribution of the model is the incorporation of an inter-plant reconfiguration mechanism that enables the dynamic redistribution of semi-processed products when processing disruptions occur. This mechanism enhances system resilience by allowing adaptive responses to localized failures. The repository includes: A full mathematical model description A GAMS implementation Input data for reproducibility The model can be implemented in GAMS and solved using MILP solvers such as CPLEX or Gurobi. This resource is intended to support reproducible research in supply chain optimization and resilient production systems.