gaetan/knowledgify

Decision: Spaced repetition algorithm — SM-2, FSRS, or custom? #3

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opened 2026-08-20 13:58:51 +02:00 by gaetan · 1 comment

gaetan commented

2026-08-20 13:58:51 +02:00

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Part of #1

Question

Which spaced repetition algorithm should power the flashcard system?

Options to evaluate:

SM-2 (original Anki algorithm): Simple, well-understood, battle-tested
FSRS (Free Spaced Repetition Scheduler): Modern, data-driven, used in newer Anki versions
Custom/hybrid: Tailored to the specific content type and learning goals

Key considerations:

How does the algorithm handle different card types (factual recall vs multiple choice)?
What review data needs to be stored (ratings, timestamps, intervals)?
Should the algorithm be configurable or hardcoded?
How do we handle "culture générale" specifics — e.g., some facts are inherently harder regardless of user performance?

This decision shapes the review engine, data model, and user experience.

Part of #1 ## Question Which spaced repetition algorithm should power the flashcard system? Options to evaluate: - **SM-2** (original Anki algorithm): Simple, well-understood, battle-tested - **FSRS (Free Spaced Repetition Scheduler)**: Modern, data-driven, used in newer Anki versions - **Custom/hybrid**: Tailored to the specific content type and learning goals Key considerations: - How does the algorithm handle different card types (factual recall vs multiple choice)? - What review data needs to be stored (ratings, timestamps, intervals)? - Should the algorithm be configurable or hardcoded? - How do we handle "culture générale" specifics — e.g., some facts are inherently harder regardless of user performance? This decision shapes the review engine, data model, and user experience.

gaetan added the

wayfinder:grilling

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2026-08-20 13:58:51 +02:00

gaetan added a new dependency

2026-08-20 13:59:57 +02:00

#2 Decision: Content model — structure of culture générale cards and categories

gaetan commented

2026-08-20 15:23:59 +02:00

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This is a duplicate of #8 (SRS algorithm), which is already closed with the resolution: SM-2 algorithm with 4 buttons. Closing as duplicate.