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README.rdoc

# HOW IT WORKS:

  1. Split the knowledge into smallest possible items.

  2. With all items associate an E-Factor equal to 2.5.

  3. Repeat items using the following intervals:

I(1):=1
I(2):=6
for n>2: I(n):=I(n-1)*EF
where:
I(n) - inter-repetition interval after the n-th repetition (in days),
EF - E-Factor of a given item
If interval is a fraction, round it up to the nearest integer.
  1. After each repetition assess the quality of repetition response in 0-5 grade scale:

    5 - perfect response
    4 - correct response after a hesitation
    3 - correct response recalled with serious difficulty
    2 - incorrect response; where the correct one seemed easy to recall
    1 - incorrect response; the correct one remembered
    0 - complete blackout.
  2. After each repetition modify the E-Factor of the recently repeated item according to the formula: EF':=EF+(0.1-(5-q)*(0.08+(5-q)*0.02)) where: EF' - new value of the E-Factor, EF - old value of the E-Factor, q - quality of the response in the 0-5 grade scale.

If EF is less than 1.3 then let EF be 1.3.
  1. If the quality response was lower than 3 then start repetitions for the item from the beginning without changing the E-Factor (i.e. use intervals I(1), I(2) etc. as if the item was memorized anew).

  2. After each repetition session of a given day repeat again all items that scored below four in the quality assessment. Continue the repetitions until all of these items score at least four.

API: # POST /recall/:id :number => { 0 .. 5 } # GET /items/:date

# Create from web console

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