Papers › PAMSO: Parametric Autotuning Multi-time Scale Optimization Algorithm
PAMSO: Parametric Autotuning Multi-time Scale Optimization Algorithm
Asha Ramanujam, Can Li
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Optimization models with decision variables in multiple time scales are widely used across various fields such as integrated planning and scheduling. To address scalability challenges in these models, we present the Parametric Autotuning Multi-Time Scale Optimization (PAMSO) algorithm. PAMSO tunes parameters in a low-fidelity model to assist in solving a higher-fidelity multi-time scale optimization model. These parameters represent the mismatch between the two models. PAMSO defines a black-box function with tunable parameters as inputs and multi-scale cost as output, optimized using Derivative-Free Optimization methods. This scalable algorithm allows optimal parameters from one problem to be transferred to similar problems. Case studies demonstrate its effectiveness on an MINLP model for integrated design and scheduling in a resource task network with around 67,000 variables and an MILP model for integrated planning and scheduling of electrified chemical plants and renewable resources with around 26 million variables.
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