gemseo-bilevel-outer-approximation 0.1.1

Bi-Level Outer Approximation

gemseo-bilevel-outer-approximation

Overview

GEMSEO plugin for Bi-Level Outer Approximation.

The implementation is based on the work done by Pierre-Jean Barjoux in:

• Barjhoux, P. J., Diouane, Y., Grihon, S., & Morlier, J. (2022). An outer approximation bi-level framework for mixed categorical structural optimization problems. Structural and Multidisciplinary Optimization, 65(8), 214.
• Barjhoux, P. J., Diouane, Y., Grihon, S., Bettebghor, D., & Morlier, J. (2020). A bi-level methodology for solving large-scale mixed categorical structural optimization. Structural and Multidisciplinary Optimization, 62(1), 337-351.

It contains:

• Benders formulation decomposition
• Bi-level Outer Approximation optimization algorithm to solve mixed integer optimization problems.
• Several strategy of Bi-level Outer Approximation improvements:
  • Convexification alpha - underestimator
  • Post Optimal Sensitivity Amplification (POSA)
  • Adaptive Convexification
• Shape Function Penalization and Hyper-sphere Penalization implementation
• A wrapper of the Open source version of MMA solver.

Installation

Install the latest version with pip install gemseo-bilevel-outer-approximation.

See pip for more information.

Bugs and questions

Please use the gitlab issue tracker to submit bugs or questions.

Contributing

See the contributing section of GEMSEO.

Contributors

• Simone Coniglio
• Loic Cousin
• Benoit Pauwels
• Antoine DECHAUME