SuperMemo
A spaced repetition learning software developed by Piotr Wozniak in the 1980s. It introduced the SM-2 algorithm and is considered a foundational product in the development of modern spaced repetition systems.
Core Facts
The core of spaced-repetition tools such as Anki and SuperMemo is the SM-2 algorithm, which dynamically adjusts the next review interval based on the user's self-rated difficulty for each review session.
The SM-2 algorithm was developed by Polish researcher Piotr Woźniak in 1987; it dynamically adjusts the interval to the next review based on the user's self-assessed difficulty for each review session, and has been productized by tools such as Anki and SuperMemo.
Timeline (last 90 days)
Spaced repetition is usually implemented by SRS (Spaced Repetition System) software such as Anki and SuperMemo.
Typical spaced repetition algorithms (such as SM-2, the SuperMemo family of algorithms) adjust the next review interval based on the quality of feedback from each review—the more fluently you answer, the longer the interval is stretched; if you answer incorrectly or hesitate, the interval is shortened.
The SuperMemo software introduced the SM-2 algorithm in 1987, dynamically calculating the optimal interval for the next review of each knowledge point based on the user's recall difficulty.
Spaced repetition is based on the forgetting curve theory proposed by Ebbinghaus in the 19th century and is the theoretical foundation for the success of tools such as Anki and SuperMemo
All Facts (6)
The core of spaced-repetition tools such as Anki and SuperMemo is the SM-2 algorithm, which dynamically adjusts the next review interval based on the user's self-rated difficulty for each review session.
70%VerifiedThe SM-2 algorithm was developed by Polish researcher Piotr Woźniak in 1987; it dynamically adjusts the interval to the next review based on the user's self-assessed difficulty for each review session, and has been productized by tools such as Anki and SuperMemo.
65%UnverifiedSpaced repetition is usually implemented by SRS (Spaced Repetition System) software such as Anki and SuperMemo.
50%UnverifiedTypical spaced repetition algorithms (such as SM-2, the SuperMemo family of algorithms) adjust the next review interval based on the quality of feedback from each review—the more fluently you answer, the longer the interval is stretched; if you answer incorrectly or hesitate, the interval is shortened.
50%UnverifiedThe SuperMemo software introduced the SM-2 algorithm in 1987, dynamically calculating the optimal interval for the next review of each knowledge point based on the user's recall difficulty.
50%UnverifiedSpaced repetition is based on the forgetting curve theory proposed by Ebbinghaus in the 19th century and is the theoretical foundation for the success of tools such as Anki and SuperMemo
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