gwern comments on Things I Wish They'd Taught Me When I Was Younger: Why Money Is Awesome - Less Wrong

32 Post author: ChrisHallquist 16 January 2014 07:27AM

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Comment author: gwern 18 January 2014 10:10:45PM 1 point [-]

Piotr Wozniak who actually did run the data claims:

I'm not sure what data he has run; skimming that page doesn't help much. I know he has no dataset comparable to the Mnemosyne dataset because I sent him my initial results a few months ago and he told me so, so it can't be based on that.

Comment author: ChristianKl 19 January 2014 01:54:05AM 0 points [-]

At the present time he has Supermemo Online and that should provide an interesting data set. But I don't think he had that dataset at the time he wrote those lines.

I think Piotr worked a lot with his own data. But he also writes:

The increase in the speed of the convergence was achieved by employing actual approximation data obtained from students who used SuperMemo 6 and/or SuperMemo 7

Algorithm SM-8 is constantly being perfected in successive releases of SuperMemo, esp. to account for newly collected repetition data, convergence data, input parameters, etc.

He also described it in his thesis in a bit of detail. 32 test subjects does not compare to the Mnemosyne dataset but it does provide plenty of data for testing algorithms and the might be enough data to decide that SM-8 is significantly better than SM-2.

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