Official implementation of Enhanced MOEA/D (En-MOEA/D) for multi-objective robust container routing. Features adaptive decomposition, Monte Carlo simulation, mean-variance risk control. Includes ZDT/DTLZ/WFG benchmarks, robust test problems, and East African case study. Associated with Applied Soft Computing paper.
# En-MOEA/D: Enhanced Multi-Objective Evolutionary Algorithm based on Decomposition for Container Routing under Uncertainty
**Preprint:** DOI: 10.2139/ssrn.5399005
**Official implementation of the Enhanced MOEA/D (En-MOEA/D) algorithm** for multi-objective robust optimization of container routing problems under uncertainty. This repository contains all the code necessary to reproduce the experiments and results presented in the paper:
> *"A Multi-objective Robust Optimization based on Evolutionary Algorithm for container routing problems under risks and uncertainties"* (Applied Soft Computing, 2026)
**Authors:** Yves Ndikuriyo, Yinggui Zhang, Dung Davou Fom
**Corresponding author:** Yves Ndikuriyo (yvesndikuriyo@csu.edu.cn)
**Institution:** School of Traffic and Transportation Engineering, Central South University, Changsha, China
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## 📋 Table of Contents
- Overview
- Key Innovations
- Performance Highlights
- Repository Structure
- Installation
- Running Experiments
- Configuration
- Output and Visualization
- Authors
- Citation
- License
- Acknowledgments
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## 📋 Overview
En-MOEA/D is a novel framework that bridges the critical gap between multi-objective optimization and robust decision-making for container routing under uncertainty. The algorithm integrates three key innovations to explicitly balance expected performance, worst-case resilience, and operational stability.
The framework has been extensively validated on:
- **ZDT, DTLZ, and WFG benchmark suites** - Demonstrating superior convergence and diversity
- **Robust test problems** - GFunction, Ishigami, OakleyOHagan, and more
- **Real-world East African logistics network** - Northern and Central Corridors connecting landlocked countries to maritime ports
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## 🔬 Key Innovations
### 1. Adaptive Decomposition Mechanism
Dynamically transitions between PBI (Penalty Boundary Intersection) and Chebyshev scalarization based on search progress:
- **Early stages**: PBI maximizes solution diversit …