Expired50% confidenceFactTime unknown
The SM2 algorithm maintains an 'easiness factor' (EF value) for each learning item and dynamically adjusts review intervals based on recall quality scores.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Building a Vocabulary App with Claude Using Zero Code: From Requirements Description to Deployment
bilibili轻松学巴葡
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