Michał Adamczyk

Senior data scientist with 10 years building ML and analytics systems in production. I write here about applied machine learning, the numbers behind the tech industry, and the occasional deep dive into the theory I find beautiful.

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Latest writing

The Method of Reflections: Reading Economic Complexity from Trade Flows

Hidalgo & Hausmann’s algorithm turns a binary country-product trade matrix into rankings of economic capability. This post walks through the method end-to-end: the iterative…

Jun 5, 2026

The Anatomy of Amazon: A Retailer That Earns Like a Cloud Company

Amazon sells $717B of goods and services a year, but most of its profit comes from a segment that is barely a sixth of its revenue. A data-driven look at where Amazon’s…

May 31, 2026