Quantified Self: How I Handled 100GB of Messy Biosensor Data with Polars and Dask
We live in the era of the "Quantified Self." Between my Oura ring, Apple Watch, and continuous glucose monitor (CGM), I’m generating more data than…
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We live in the era of the "Quantified Self." Between my Oura ring, Apple Watch, and continuous glucose monitor (CGM), I’m generating more data than…
Торговая стратегия на исторических данных показывает фантастический коэффициент Шарпа 1.8 и ровную линию доходности под 45 градусов. Вы подключаете…
Сценарий знакомый: открываешь в pandas файл побольше, ноутбук задумывается, и через минуту всё падает с MemoryError. Следом обычно звучит совет: для…
На прошлой неделе обратил внимание на обильное и, на мой взгляд, не всегда уместное использование слова «честный» на Хабре. Решил детальней изучить…
Polars hits the sweet spot between Pandas’ ease and Spark’s scale. If you’ve ever waited on a groupby or cursed a memory error, this cheat sheet is…
A column of payment notes will teach you where Python spends its time. Mine held free text: "charged card 4111 1111 1111 1111", "cliente RUT 12.345.…
You need to hand a dataset of Chilean RUTs to an outside analytics team, who will join it against other tables by identifier, run the cohort analysi…
In the global streaming economy, Spotify, Apple Music, and other DSPs process billions of plays daily. Behind this massive transaction layer lies a…
MaskOps 2.0 shipped this week. Before I told anyone, I looked at my own numbers. Two of them were lying to me, in opposite directions. MaskOps is a…
Here is a draft for DEV.to. It is structured exactly how developers love to read articles: a quick introduction, the core architectural philosophy,…