3 ms·

Full marks for snark, but points off for being incorrect. https://en.m.wikipedia.org/wiki/Kullback%E2%80%93Leibler_divergence https://en.m.wikipedia.org/wiki/K

• defrost 3y ago
  From your link: a measure of how one probability distribution P is different from a second, ie. literally it's a separation measure for distributions .. just as I recalled from my first encounter with the notion ~ 1984 (ish). If you're sincere you should either add those points back or, preferably, expand upon your theory of how my snap take is incorrect. ( I'm aware it's not a metric due to triangle inequality, etc. )
  • elefanten 3y ago
    The snap take came across as an argument about which of two names for the measure is better-known. The wikipedia page implies the opposite of that argument. Perhaps that’s changed since 1984, but the proposition was about current practices.
    • defrost 3y ago
      It's been Kullback since birth in 1907 to the best of my knowledge, never once Kullbeck. As a fully anglicized US citizen born in Brooklyn, New York I don't think there's ever been any vowel confusion over the spelling of the name: https://en.m.wikipedia.org/wiki/Solomon_Kullback https://en.m.wikipedia.org/wiki/Solomon_Kullback Admittedly I did check as it's not uncommon for mathematicians to have alternate spellings for their names. Ditto Leibler, born Chicago, Illinois in 1914, no dropped L https://en.m.wikipedia.org/wiki/Richard_Leibler https://en.m.wikipedia.org/wiki/Richard_Leibler