Comments on: A Better Spaced Repetition Learning Algorithm: SM2+ http://www.blueraja.com/blog/477/a-better-spaced-repetition-learning-algorithm-sm2 Fri, 31 Mar 2017 07:13:36 +0000 hourly 1 https://wordpress.org/?v=4.9.5 By: Jevgenija http://www.blueraja.com/blog/477/a-better-spaced-repetition-learning-algorithm-sm2#comment-25654 Fri, 31 Mar 2017 07:13:36 +0000 http://www.blueraja.com/blog/?p=477#comment-25654 You probably have a typo here:
> easiness += -0.8 + 0.28*performanceRating + 0.02*performanceRating^2

in the original (https://www.supermemo.com/english/ol/sm2.htm) it’s:
> – 0.02*performanceRating^2

I wonder where did you get the
> 6 * (easiness ** (consecutiveCorrectAnswers – 1))
formula? I’m only seeing
> I(n):=I(n-1)*EF
in the original.

]]>
By: xpucsc http://www.blueraja.com/blog/477/a-better-spaced-repetition-learning-algorithm-sm2#comment-24139 Tue, 17 Jan 2017 09:30:03 +0000 http://www.blueraja.com/blog/?p=477#comment-24139 This is very easy to read. Love it. Are you planning to have a second part to this blog soon? Thanks.

]]>
By: habib http://www.blueraja.com/blog/477/a-better-spaced-repetition-learning-algorithm-sm2#comment-23951 Mon, 26 Dec 2016 23:39:31 +0000 http://www.blueraja.com/blog/?p=477#comment-23951 are you sure memrise app use sm2 algorithm?

]]>
By: IceTimux http://www.blueraja.com/blog/477/a-better-spaced-repetition-learning-algorithm-sm2#comment-23580 Fri, 04 Nov 2016 16:27:59 +0000 http://www.blueraja.com/blog/?p=477#comment-23580 Is there way to implement SM2 algorithm and get minutes too along with dates? like Anki does it?

]]>
By: Anon26 http://www.blueraja.com/blog/477/a-better-spaced-repetition-learning-algorithm-sm2#comment-23153 Sun, 04 Sep 2016 17:44:06 +0000 http://www.blueraja.com/blog/?p=477#comment-23153 I get it now.
I sort of misread the Min, thing.
Makes sense.

]]>
By: BlueRaja http://www.blueraja.com/blog/477/a-better-spaced-repetition-learning-algorithm-sm2#comment-23151 Sun, 04 Sep 2016 16:08:25 +0000 http://www.blueraja.com/blog/?p=477#comment-23151 When you are initially ordering the items, there is no “correct” or “incorrect” yet.

I meant for you to order by the “correct” definition, though looking back I realize that’s unclear. Hmm.

If card is correct, it is at least 2, and probably higher

2 is the maximum, not the minimum.

]]>
By: Anon26 http://www.blueraja.com/blog/477/a-better-spaced-repetition-learning-algorithm-sm2#comment-23149 Sun, 04 Sep 2016 15:02:17 +0000 http://www.blueraja.com/blog/?p=477#comment-23149 I dont get your formula behind percentoverdue.

If card is correct, it is at least 2, and probably higher
If card is incorrect, it is set to 1.

shouldnt it be the other way round, caused items to be shown are the top entries when it is ordered descending by percentoverdue.

Or I am just missing something.

]]>
By: Denilson http://www.blueraja.com/blog/477/a-better-spaced-repetition-learning-algorithm-sm2#comment-23075 Fri, 26 Aug 2016 14:28:42 +0000 http://www.blueraja.com/blog/?p=477#comment-23075 Congratulations.

I’m waiting for the next post.

Do you know any already implemented in any programming language (PHP, Python, Java) ?

]]>
By: ravi http://www.blueraja.com/blog/477/a-better-spaced-repetition-learning-algorithm-sm2#comment-23032 Fri, 19 Aug 2016 01:07:38 +0000 http://www.blueraja.com/blog/?p=477#comment-23032 Thanks for sharing

]]>