2009/2/19 Francisco José Fiuza Lima Júnior <[email protected]>: > It doesn't make that much sense now. > > Let's say the interval for a card is 50 days, and I grade it 2 because I got > it barely correct. > Will it be better to: > > 1) increase the interval to 60 days and let me forget it on the next time, > > 2) or decrease it to 40 days and give it a grade 3 next time because I > didn't leave it for too long? > > I think the option 2 is better, because if the interval always increases, > I'll eventually forget it one day, and then, I'll have to start all over > like a fresh card. Is it how it works? I know that when I forget a card, it > starts all over from interval of 1, 2 , 3 days...
You're making an assumption here that you will eventually forget the card by grading it 2 under the current scheme. Have you done any statistical analysis to see whether this is true? The big problem I see with your conclusion is that you SUCCESSFULLY answered the card, even if it was difficult. If you successfully reviewed the card once after 50 days even with difficulty, why do you think you will be LESS likely to answer it correctly after another 50 days? This is the basis of spaced repetition systems! > It doesn't seem reasonable to increase the interval if I'm not comfortable > with the card... > In my opinion, the algorithm should find an ideal interval for a card, > increasing or decreasing it so that you give it a grade 4. That's what it already attempts to do. You shouldn't declare the algorithm incorrect on this issue without providing some proof. > Another example. I grade one card 5 and the next interval was set to 100 > days. When that time comes, I was about to forget the card and grade it 2. > Why do you think that if in 100 days a grade 5 card dropped to 2, increasing > it to 130 days will do any good? I'm 99% sure that after those 130 days I'll > forget the card... According to the material I've read on spaced repetition systems, "about to forget the card" is the OPTIMUM time to review it, so that the knowledge moves into your long-term memory quickest. You may be "99% sure" that you will forget the card after 130 days, but that's not good enough without actually performing experiments and verifying one way or another. If this has really happened to you many times, you should document it carefully - but if not, being so sure based simply on an assumption or feeling is not a good enough reason to say "the algorithm should be changed". 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 -~----------~----~----~----~------~----~------~--~---
