(Crossposted at http://slatestarcodex.com/2018/10/19/classified-thread-5-classified-never-sinned-2/#comment-680945 … & https://www.reddit.com/r/gwern/comments/9pkihf/request_a_javascript_implementation_of_a_bean/ … )
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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this seems relevant: http://blog.vctr.me/posts/central-limit-theorem.html …
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Yeah, there are a number of bean machine Java and JS implementations (linked from WP) but all of them are either broken or appear hardwired to be a single bean machine, so even if you added some order-statistics/max stuff, it's unclear how to make them do what I need.
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I don't need to demo the CLT, plenty of widgets for that - I need the multi-stage selection! That's what's hard for people to understand and why I need interactive animations.
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oh I see, that's interesting. I suppose a bean machine component that could be chained is reasonable to design. I'm not sure you'll find it ready to use tho. you could probably find a d3 freelancerhttps://groups.google.com/forum/#!forum/data-vis-jobs …
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Possibly. I'll try the volunteers first, though, before trying to recruit some D3 people.
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do the individual beans carry some sort of (presumably randomly or normally distributed) bias for each peg or do they behave randomly? in either case what's the relation between different generations? i can't make out the annotation that seems to explain this
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Random. 50-50 chance of going left/right. (It shows how the binomial approximates a normal.) Each generation, you start at the new maximum as the mean. So stages become progressively displaced rightward as selection ratchets up the distribution mean.
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Fun fact: linear regression (originally to explain why unusually tall parents had children whose height "regressed" toward the species average) was invented when Galton put one quincunx after another. So good luck with whatever you're doing!
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Look up Natural Inheritance (1889) by Galton for a cool diagram if you can!
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I need to go and read Galton's books one of these days. He invented everything from adoption to twin studies to regression. His autobiography also sounds like it would be a hoot.
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