2 ms·

If only there was an entire field that exists to characterize when subsampling a population is valid and sound.

• yourMadness 8y ago
  Why spend years learning those results when you can ignore them at no cost? And have a happy client that finally gets the results he wanted when the other analysts said it was impossible.
• pedasmith 8y ago
  If only my non-statistical peers would recognize that sampled=fast and fast=more checks and explorations. It's like they recognize that fast compile times are a great thing (I've had to wait in line with punchcards, and it sucks), but they are completely oblivious to the exact same argument when it comes to data.
• deleted 8y ago
  [deleted]
• cwyers 8y ago
  Elsewhere he talks about how subsamples are chosen because they take but seconds to run instead of minutes. If a sample is small enough that you're saving that much time, and analysis is that cheap, you can still do five-fold or ten-fold cross validation in less time than the full data set analysis and get a very good idea on if your subsample is representative of the data or not.