In the OEC, we ensure the completeness and accuracy of our datasets by utilizing Mirror Data. Mirror data is a technique used to reconstruct the trade profile of a country by using the reports of its trading partners. This applies to countries that do not have their own national dataset in our platform.

When primary data is unavailable, our algorithms use "mirror" reports from trading partners with high statistical reliability to estimate trade flows at the product level (HS codes). This ensures the Economic Complexity Index (ECI) and other metrics remain consistent even when official sources are missing.

To request mirror data for a country, use our Ask for Data form.