Algorithms

• SuperMemo 2: Algorithm
  • SuperMemo 2 algorithm: source code
• Algorithm SM-17 FAQs - SuperMemopedia

Implementations

• Anki
  • How Anki calculates intervals · GitHub
  • Database Structure · ankidroid/Anki-Android Wiki · GitHub
  • scheduler
    • Python
      • https://github.com/dae/anki/blob/9c7c52b99cdd1aa26278f4cfd906e6945cc09877/anki/sched.py
      • https://github.com/dae/anki/blob/9c7c52b99cdd1aa26278f4cfd906e6945cc09877/tests/test_schedv1.py
      • https://github.com/dae/anki/blob/9c7c52b99cdd1aa26278f4cfd906e6945cc09877/anki/cards.py
    • Java
      • https://github.com/ankidroid/Anki-Android/blob/665df9d1e72bd652453d972ade9531aa68b17446/AnkiDroid/src/main/java/com/ichi2/libanki/Sched.java
      • https://github.com/iniju/Anki-Android-Test/blob/master/src/com/ichi2/libanki/test/SchedTestCase.java
    • C#
      • https://github.com/AnkiUniversal/Anki-Universal/blob/master/AnkiU/AnkiCore/Sched.cs
      • https://github.com/AnkiUniversal/Anki-Universal/blob/master/TestAnkiCore/TestSched.cs
• LibSpacey (C++)
  • Code of scheduler
• sm-2 (ES6)
  • includes explanation
• monica2 (C++)
  • Code of scheduler
• ebisu (Python)
• GitHub - hyperworks/swift-SRS: A Simple Spaced Repetition library for Swift with a permissive license
• GitHub - s9w/Ginseng: Spaced repetition learning for the browser
• GitHub - helephant/SpacedRepetition.Net: A .NET library that implements spaced repetition algorithms
• GitHub - dpwright/srs: A highly extensible command-line spaced repetition system
• Fresh Memory (software) - Wikipedia
  • Downloads - Fresh memory
• Mnemosyne (software) - Wikipedia
  • Principles - The Mnemosyne Project
• GitHub - tosbaha/SMLib: SuperMemo SM2 Algorithm in Swift
• GitHub - espresse/spaced_repetition: SM2 spaced repetition algorithm for Ruby
• CleverDeck Manual - Algorithm
  • CleverDeck Manual - Sibling Cards
• Can someone explain what graduating interval, starting ease %, east bonus%, and interval modifier% mean? : Anki
• Anki Manual
• Anki's Starting Ease Factor Setting
• Anki - Dynamic Efficient Learning Steps With Feedback
• Target An 80-90 Percent Success Rate In Anki
• Anki post 2: Cramming, gamification, and interval modification - ollie lovell
• Piotr Wozniak as a role model for lifelong learners - Art of Memory Forum
• Home · glutanimate/image-occlusion-enhanced Wiki · GitHub

Reading

• (1712.01856) Optimizing Human Learning
• Can someone explain "Deck options" to me : Anki
• Anki without flashcards : Anki
• Spaced-repetition - Gwern.net
• Thoughts On A New Algorithm For Anki
• Spacing Algorithms and Implementations - NihongoPeraPera
• Spaced Repetition for All: Cognitive Science Meets Big Data in a Procrastinating World
• A Better Spaced Repetition Learning Algorithm: SM2+ — One Man's Trash is Another Man's Blog
• Twitter: Michael Nielsen on spaced repetition