How to fix the most common database performance problems, which are caused by improper indexing, along with examples for Postgres, MySQL, and SQLite.
Read it!Cool explanation of computational aspects of recommendations avoiding to "get lost in the weeds of linear algebra".
Read it!"The difficulty is that machine learning is a fundamentally hard debugging problem. Debugging for machine learning happens in two cases: 1) your algorithm doesn't work or 2) your algorithm doesn't work well enough."
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