Welcome to the FSRS4Anki Wiki!
TL;DR โ Deck OptionsโFSRS: Manual (Tutorial / Guide)
A brief overview of FSRS: ABC of FSRS
Frequently asked questions about FSRS: FAQs
The formulas of memory used in FSRS: The Algorithm
The training process of FSRS: The mechanism of optimization
Spaced Repetition Algorithm: A ThreeโDay Journey from Novice to Expert
The comparison of SM-2, FSRS v3, FSRS v4, and other algorithms: The BenchmarkOther resources/tools:
Some posts and articles about FSRS- @Expertiumโs blog about spaced repetition, which features multiple articles about FSRS.
Anki FSRS Visualizer (open-spaced-repetition.github.io)
The History of FSRS for Anki
- @L.M.Sherlock representative paper at ACMKDD: A Stochastic Shortest Path Algorithm for Optimizing Spaced Repetition Scheduling
- MaiMemoโs papers at ACM KDD and IEEE TKDE: A Stochastic Shortest Path Algorithm for Optimizing Spaced Repetition Scheduling [ไธญๆ็] & Optimizing Spaced Repetition Schedule by Capturing the Dynamics of Memory [ไธญๆ็]
L.M.Sherlock fantastic research experience on spaced repetition algorithm: How did I publish a paper in ACMKDD as an undergraduate?
The largest open-source dataset on spaced repetition with time-series features: open-spaced-repetition/FSRS-Anki-20k
FSRS is an independent open-source project driven by its community. We are grateful for the support from organizations like ๅขจๅขจ่ๅ่ฏ (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.
Sponsor Open Spaced Repetition and FSRS: