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danieldratschuk

HN member
Joined
Thu, Aug 06, 2026, 3:12 PM UTC
HN karma
4
Public activity
7 items

About danieldratschuk

Math grad from Germany. Building Clef, an app for learning piano.

Before that I trained a transformer for optical music recognition (Transcoda, NeurIPS submission). I play piano myself, mostly Chopin and Liszt. Taught myself Japanese to JLPT N1, mainly with Anki and small tools I built for it, like a popup dictionary in C.

danieldratschuk.com daniel.dratschuk@gmail.com

Recent public activity

  1. comment
    Comment #49218990

    Thanks! It's determined via the FSRS algorithm. It starts out with the average retention curve for flashcards, but then adjusts to you as it learns your patterns. In the future, as…

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    Comment #49207136

    Took another look to be specific. I think the information is actually all on the page, but it's never said in a plain sentence. The headline gives the outcome ("A grade ahead in ma…

  6. comment
    Comment #49198901

    The general idea seems decent, and "just slightly above your skill level" is a real learning technique. One thing I'd be careful with is hints. In math you need to struggle through…

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    Comment #49198034

    I made a popup dictionary for myself when I was learning Japanese. The thing that made me actually use it was that it works on selected text in any app, one hotkey, right where I'm…