Hello Oisín, > but it's not reasonable if there's no evidence.
> When you say "about to forget" you're thinking "50% chance to forget > NOW", but I don't think this is right. > how could you possibly know when > you answer a card that you had a 50% chance to get it wrong or forget? I have no evidences, just my gut feelings. Those numbers where just guesses, just to show an example. Thinking about all that and about your valuable input Oisín, now it makes sense to me that the "about to forget" should be grade 2. It's the closest you can get to forget. So the interval should really increase on every grade different from forgetting. > if I really > know it quite well, then I won't spend much time reviewing that card > from scratch (and I can mark it 4 each time if it feels right - then > the interval will quickly increase again). True, true. We shouldn't worry about them since we already have some knowledge on it and after a few repetitions, the interval will get close to what it would be if it had just decreased the interval. At the end, it won't make too much difference. > I would expect that > it's the same for you, so maybe you're worrying a bit much about a > something quite insignificant - a storm in a teacup. :D I might sound like, but I'm not worried at all! I'm getting excellent results with the original algorithm. I just wanted to share my thoughts, that's all! I have 1731 cards at the moment. Grade 2: 7.8% Grade 3: 17.7% Grade 4: 44.5% Grade 5: 33.0% And the scheduled average is about 45 cards a day! I'm quite happy with it! I'm still using Mnemosyne 1.0.1.1 :) Regards, Frank On Fri, Feb 20, 2009 at 10:40 PM, Oisín Mac Fhearaí <[email protected]>wrote: > > 2009/2/20 Francisco José Fiuza Lima Júnior <[email protected]>: > > Probably grade 2 might refer to 50% of chances to remember, and grade > 3, > > maybe 70%. Don't know about then, but 90% is absolutely more likely to be > > grade 4. > > I might be totally wrong, as I said, I'm not an expert, it's just some > > thoughts and reflections. > > Hi Francisco, > > I think you're making a leap of faith here - if you pick grade 2 and > think "at this difficulty, I would probably forget the card half the > time", that may feel reasonable, but it's not reasonable if there's no > evidence. > > When you say "about to forget" you're thinking "50% chance to forget > NOW", but I don't think this is right. If the algorithm was exactly > (impossibly) correct in all its guesses, then "about to forget" would > mean "100% likely to remember correctly NOW, but will forget SOON". > So I think that seeing things as "2 = 50% likely to forget, 3 = 70%, > etc" is meaningless - for example, how could you possibly know when > you answer a card that you had a 50% chance to get it wrong or forget? > All you know is that you forgot, or that you remembered and roughly > how difficult it was for you to answer (which usually corresponds to > how long you had to think, but varies from question to question > anyway). > > That said, I'm not an expert either, so I could be completely wrong > and you could be completely right on this :) > > > > > I just think that, if I'm working on a card for maybe one year, I would > > rather decrease the interval if I'm grading it 2, then to increase the > > interval and risking forgetting it. > > This is sensible, but personally I don't worry too much about it, and > if I get something wrong (that I think I really should have gotten > right) I just accept the mistake and start on it again... if I really > know it quite well, then I won't spend much time reviewing that card > from scratch (and I can mark it 4 each time if it feels right - then > the interval will quickly increase again). Ok, perhaps learning > performance for that item will suffer slightly as you're being exposed > to it more often than you should. > > However, my success rate on longer intervals is over 92% I think, and > that's with relatively difficult material (English on front, Chinese > phonetics and written characters on the back). Usually when I slip up > on those items, it's a small mistake (like missing a stroke or getting > a tone wrong), or maybe mistaking it for another (equivalent) > character, rather than forgetting it completely. I would expect that > it's the same for you, so maybe you're worrying a bit much about a > something quite insignificant - a storm in a teacup. :D > > regards, > Oisín > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "mnemosyne-proj-users" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/mnemosyne-proj-users?hl=en -~----------~----~----~----~------~----~------~--~---
