Supermemo ver 7 1995 certainly decreases E-factor also for fail grade
(Score 0, 1, 2 and 3)
To me this seems senisble.
I made a test-base in Supermemo 7 and manipulated the PC clock.The below
table shows the development of E-factor in SM7 (1995).
(Repetition after 1 month (M1), 2 months etc.)
Self Rating (q) = 0: M1: 2.075 M2: 1.650 M3: 1.300 M4: 1.300 M5: 1.300 M6:
1.300
Self Rating (q) = 1: M1: 2.075 M2: 1.650 M3: 1.300 M4: 1.300 M5: 1.300 M6:
1.300
Self Rating (q) = 2: M1: 2.180 M2: 1.860 M3: 1.540 M4: 1.300 M5: 1.300 M6:
1.300
Self Rating (q) = 3: M1: 2.360 M2: 2.360 M3: 2.360 M4: 2.220 M5: 2.220 M6:
2.220
Self Rating (q) = 4: M1: 2.500 M2: 2.500 M3: 2.500 M4: 2.500 M5: 2.500 M6:
2.500
Self Rating (q) = 5: M1: 2.600 M2: 2.600 M3: 2.600 M4: 2.600 M5: 2.600 M6:
2.700
As you can see, the lower the Self Rating the lower the E-factor, also for
fail grade (Score 0, 1, 2 and 3 in SM)
If during a repetition session in SM items are scored 3 or lower, these
cards are saved for what is called "final drill". During "final drill" the
scoring is "binary": Pass = 4 (or higher). Fail = 3 (or lower). I quite
like the "final drill"-concept and would like to see it also in Mnemosyne:
the possibility of really drilling the items that you by that repetition
haven't yet learned well.
On Monday, 6 August 2012 08:30:57 UTC+2, Peter Bienstman wrote:
>
> On Sunday, August 05, 2012 10:55:46 AM Henrik in Oslo wrote:
>
> > It says:
> > «EF':=EF+{0.1-(5-q)*[0.08+(5-q)*0.02]}
>
> That formula is only valid for pass grades, not fail grades. From the SM
> website:
>
> 6. 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).
>
> But I agree that it's confusingly written.
>
> > *2) Under what circumstance does the E-factor decrease?*
>
> For grades 2 and 3.
>
> > *B Terminology:*
> > 1) Is "Repetitions" (in Stat) same ac "Review reps" (in Browse Cards)?
>
> Because of lack of space, I abbreviated repetitions as reps. In Stats,
> reps
> currently is learning reps + review reps, but I agree it's inconsistent
> with
> the browser, so I've split this up by listing learning reps and review
> reps
> separately in the statistics page too.
>
> > 2) In Card Statistics I find "Scheduled interval". What is the
> equivalent
> > in Browse Cards?
>
> Scheduled interval is next rep - last rep. This indeed probably does not
> add
> too much, so I've removed this from the statistics page.
>
> Thanks for spotting this!
>
> Peter
>
> >
> > Best regards
> > Henrik
> >
> > On Sunday, 5 August 2012 17:02:23 UTC+2, Peter Bienstman wrote:
> > > Quoting "Henrik in Oslo" <[email protected]>:
> > > > I have for 3-4 weeks not included a couple of tags in my daily
> learning.
> > >
> > > I
> > >
> > > > checked the effect of different gradings on some cards and was very
> > > > surprised that "Easiness" remains practically unchanged whatever
> grade I
> > > > give to these cards.
> > >
> > > Well, with grade 5 you do see an increase of easiness of 0.10 :-) For
> > > failing grades, the easiness is indeed not changed.
> > >
> > > All of this is exactly as prescribed by the original SM2 algorithm.
> > >
> > > > A minor
> > > >
> > > > comment: The terminology is not altogether the same between "Show
> > > > statistics" (Ctrl T) and "Browse Cards"
> > >
> > > Could you please elaborate?
> > >
> > > Thanks!
> > >
> > > Peter
> --
> Peter Bienstman
> Ghent University, Dept. of Information Technology
> Sint-Pietersnieuwstraat 41, B-9000 Gent, Belgium
> tel: +32 9 264 34 46, fax: +32 9 264 35 93
> WWW: http://photonics.intec.UGent.be
> email: [email protected]
>
>
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