
https://github.com/open-spaced-repetition/fsrs4anki/releases/tag/v4.14.1
Includes an optimizer 4.25.3 update.


New repository regarding presets and collection vs deck level optimization

Junyao Ye, also known as Jarrett Ye is the author of the new stochastic model of spaced repetition
“It’s a substantial extension of my previous conference paper A Stochastic Shortest Path Algorithm for Optimizing Spaced Repetition Scheduling. FSRS is based on the model proposed in that paper.”
Just a discrepancy of review dates that I noticed, still not able to reproduce and report a bug.
There is a known bug that has to do with reviewing cards during the rollover hour (set at 4 hours past midnight as default) but it seems it is not the case here…
https://github.com/ankitects/anki/issues/2606

https://github.com/open-spaced-repetition/fsrs4anki/wiki/The-Benchmark

According to the above data FSRS v4 is the most accurate algorithm as it has the lowest Mean absolute error based on 66 group of experiments in 59 collections containing approximately 3 million reviews
The new beta-untested version of the FSRS scheduling algorithm is 4.2.1 while the respective stable release is 3.26.2
https://github.com/open-spaced-repetition/fsrs4anki/releases