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Jarrett Ye edited this page May 1, 2025 · 27 revisions

FSRS4Anki

Welcome to the FSRS4Anki wiki!

A brief overview of FSRS: ABC of FSRS

Frequently asked questions about FSRS: FAQ

The formulas of memory used in FSRS: The Algorithm

The training process of FSRS: The mechanism of optimization

The comparison of SM-2, FSRS v3, FSRS v4, and other algorithms: The Benchmark

How did I come up with what became FSRS: Spaced Repetition Algorithm: A Three‐Day Journey from Novice to Expert

Other resources/tools:

My representative paper at ACM KDD and IEEE TKDE: A Stochastic Shortest Path Algorithm for Optimizing Spaced Repetition Scheduling [中文版] & Optimizing Spaced Repetition Schedule by Capturing the Dynamics of Memory [中文版]

My fantastic research experience on spaced repetition algorithm: How did I publish a paper in ACMKDD as an undergraduate?

The largest open-source datasets on spaced repetition with time-series features: open-spaced-repetition/FSRS-Anki-20k & open-spaced-repetition/anki-revlogs-10k

FSRS is an independent open-source project driven by its community. We are grateful for the support from organizations like 墨墨背单词 (MaiMemo Inc.), who champion open source by enabling core contributors like Jarrett Ye to invest time and expertise into FSRS. This collaboration helps ensure FSRS remains a leading-edge, freely available spaced repetition algorithm for everyone.

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