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Distilling the Pareto optimal front into actionable insights

Year: 2025
Type: article
Abstract: Multi-objective optimization (MOO) is becoming increasingly important in environmental decision making, but interpreting highly-dimensional Pareto optimal data often constitutes a cognitive overload for both scientists and stakeholders. To address this challenge, we present PyretoClustR, a modular framework for post-processing Pareto optimal solutions. This tool aims to increase accessibility and applicability of MOO results by introducing a low-lift, iterative method to reduce the Pareto front. PyretoClustR is adaptable to various environmental datasets and decision-making scenarios, automatically selecting effective parameters for principal component analysis, clustering, and outlier handling. It produces digestible visualizations of the pruned dataset for decision-makers. We demonstrate its effectiveness using MOO results from a multifunctional landscape, highlighting trade-offs between agricultural productivity, biodiversity, water quality, and ecological flow. PyretoClustR successfully reduced the Pareto front (2419 points) to 18 representative solutions with a silhouette score of 0.33 based on decision space variables, facilitating understanding of MOO for informed decision making. • PyretoClustR enhances interpretability of Pareto fronts to support decision making. • The open-access tool clusters and visualizes multi-dimensional Pareto solutions. • A semi-automated 5-step workflow can be applied without requiring expert knowledge. • Decision space variables are highly relevant for Pareto pruning and visualization. • Frequency maps are used to show hotspot locations for spatial optimization problems.
DOI: 10.1016/j.envsoft.2025.106508
Language: English
Open Access status: hybrid
Estimated APC paid: $3,500
OpenAlex ID: W4410016573
FWCI: 3.394
Cites: 40
Cited by: 7
Related to: 10