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I somehow missed the data-scraping introduction, that he sourced a fan-operated website that archives questions and answers. Here I'd thought he'd just off-handedly created a phenomenal data scraper for the general web.

He didn't talk much about the algorithm he used to present questions for optimal memorization. I imagine it was spaced repetition, as used in SuperMemo:

http://www.wired.com/medtech/health/magazine/16-05/ff_woznia...

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Yes, that's right. That was my own question; he said he uses Anki: http://quantifiedself.com/2011/09/roger-craig-on-knowledge-t...

A while back I actually built a mobile site for playing Jeopardy (originally conceived as a drinking game based on jeopardy, but that's another story...) part of which was a scraper that pulled data off the fan-sourced site and parsed it out.

Code for parsing, if anyone's interested: https://github.com/mpobrien/jeoparty/blob/master/scrape_mong...

And code for scraping: https://github.com/mpobrien/jeoparty/blob/master/curler.sh

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