MemUAI Smart Review Algorithm (SM2 Rules) #

In MemUAI, every learning and review session is powered by the SM2 smart memory algorithm.
Its goal is simple:
Help you review at the right time, maximize retention, and minimize wasted effort.

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1. Learning & Scoring #

• After each study or practice session, the system gives you a score (0–100).
• This score is converted into a quality grade (0–5):
  • 0–2 (Fail) → Not well remembered.
  • 3–5 (Success) → Remembered correctly.

👉 A score below 50 (quality < 3) counts as a failure.
👉 A score of 50 or higher (quality ≥ 3) counts as a success.

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2. Next Review Interval #

The algorithm determines when you should see the item again:

• Failure (quality < 3)
  • Resets your streak of successful reviews.
  • Schedules the next review tomorrow.
• Success (quality ≥ 3)
  • Increases your streak of successful reviews.
  • Schedules the next review as follows:
    1. First success → 1 day later
    2. Second success → 6 days later
    3. Third success and beyond → calculated dynamically using your past review intervals and personal memory factor (EF).

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3. Easiness Factor (EF) #

• EF (Easiness Factor) reflects how easy or hard an item is for you to remember.
• EF changes automatically with your performance:
  • Strong answers → EF goes up → longer review intervals.
  • Weak answers → EF stays the same or decreases → shorter intervals.
• EF is always kept within a safe range (1.3 – 2.7) to balance efficiency and memory.

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4. Knowledge Proficiency Levels #

To make progress clearer, MemUAI translates your performance into proficiency levels:

• Beginner
• Familiar
• Intermediate
• Proficient
• Mastered

👉 After every study, your proficiency is updated based on EF and your streak of successes.

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5. Tracking Your Progress #

• Every study result is recorded, including score, time, duration, and proficiency.
• You can review your learning curve anytime to see your progress.
• Based on your history, the system generates a personalized review plan tailored to your needs.

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6. Why It Matters #

1. Saves time – No more reviewing things you already know well.
2. Scientifically efficient – Reviews happen right before you would forget.
3. Personalized – Adapts to your individual memory patterns.
4. Visible progress – Proficiency levels and data let you see improvement clearly.

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