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Research & Deep Dives

Technical explorations of real systems — algorithms, ML models, and architectures that power the products we use every day. Built to be read, not just referenced.

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X For You Feed Algorithm — Deep Dive

A from-scratch interactive breakdown of how X decides what appears in your For You feed, based on the open-sourced algorithm code. Covers the full 8-stage pipeline, Phoenix ML model, Grox safety system, and scoring formula.

May 2026~20 min
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