Methodological Supplement for "From Complex SDG Systems to Network Models: An Ontology-Based Eight-Step Framework"

This supplement documents the evaluation framework used to review SDG network studies. It explains corpus assembly and inclusion criteria, defines the four phases (Framing, Abstraction, Conceptualization, Analysis), and details the eight methodological steps with the three-tier scheme (A, B, C) that captures different levels of integration between domain knowledge and formal network modeling. It clarifies node and edge ontologies, relationship types, network structures, analytical theories, and data sources, with references and notes on what was excluded. The file supports reproducibility of the paper’s methods and figures.