Instacart: Predicting real-time availability of 200 million grocery items in North American stores

tech.instacart.com

How and why Instacart uses machine learning to predict real-time availability of 100s of millions of grocery items being sold across US and Canada.

This is an excellent walkthrough of a complicated problem and its solution. There's some great discussion in the post around particularly tricky challenges—high categorical cardinality and sparse data in the long-tail—where the team has come up with clever / useful solutions. 👍👍

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