Methodology

Data Source Disclaimer

The data used in this application is a representative subset of global trade data (based on UN Comtrade 2022/2023 flows), optimized for client-side demonstration within Vercel Serverless limits.

While the algorithms are mathematically consistent with the Atlas of Economic Complexity, the Product Space (HS92) has been condensed to ~100 major nodes and the Country List is focused primarily on European economies plus major global benchmarks. This ensures high-performance graph rendering without heavy backend infrastructure.

1. The Product Space

The Product Space is a network representation of the relatedness between products traded in the global economy. Nodes represent products (HS4 classification), and links represent the probability that two products are co-exported by the same countries.

In this application, we utilize a force-directed graph where related products pull closer together. Clusters typically emerge representing sectors like Machinery, Electronics, or Chemicals.

2. Revealed Comparative Advantage (RCA)

To determine if a country is a successful exporter of a product, we use the Balassa Index (RCA). A country $c$ has an RCA greater than 1 in product $p$ if its export share is larger than the global export share of that product.

RCA_cp = (X_cp / X_c) / (X_wp / X_w)

$X_{cp}$: Exports of product $p$ by country $c$
$X_{c}$: Total exports of country $c$
$X_{wp}$: World exports of product $p$ (in our dataset context)
$X_{w}$: Total world exports

3. Economic Complexity Index (ECI)

The ECI ranks countries based on the diversity and ubiquity of their export basket. In standard literature, this is calculated via the Method of Reflections (eigenvalues).

For this lightweight implementation, we utilize an iterative approximation based on the average Product Complexity Index (PCI) of the country's active basket. This provides a robust "Complexity Outlook" score.

ECI_c ≈ (1 / |P_c|) ∑ PCI_p

Where $P_c$ is the set of products where country $c$ has $RCA > 1$, and $PCI_p$ is the standard complexity index of the product.

4. Strategic Adjacencies (The Opportunity Engine)

The "Opportunity" engine identifies products a country does not yet export competitively ($RCA < 1$) but is well-positioned to develop. This is calculated using Density (distance) and Complexity Gain.

Density Formula

ω_j = ( ∑ x_i ϕ_ij ) / ( ∑ ϕ_ij )

Density $\omega_j$ represents the proximity of a potential product $j$ to the country's current productive capabilities.$x_i = 1$ if the country exports product $i$, and $\phi_{ij}$ is the proximity (probability link) between product $i$ and $j$.