Researchers have developed an algorithm to reconstruct large-scale, weighted firm-to-firm production networks using only public sectoral input–output tables and firm size distributions.
The method was applied to economies including the US, Japan, UK, Australia, Finland, and Denmark, generating national-scale networks with millions of firms and links.
This reconstruction enables detailed analysis of economic shocks and systemic risk, providing a valuable tool where detailed firm-to-firm data is unavailable.