While Model Trains

Read data blog posts.
Carefully handpicked.
Presented 3 at a time.

Optimizing Slow SQL Queries

Miguel Grinberg

How to fix the most common database performance problems, which are caused by improper indexing, along with examples for Postgres, MySQL, and SQLite.

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Markov Chains

Victor Powell and Lewis Lehe

A fascinating explanation of Markov Chains with interactive simulations.

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What Should Data Scientists Learn?

Peter Baumgartner

Asking 'What happens before I do my job?' and 'What happens after I do my job?' can help with choosing what to learn next.

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