6 ms·

The user id can be used to seed the random number algorithm to achieve that.

• NewsAware 7y ago
  Hmmm but if you change the distribution, this won't be deterministic anymore unless the randomness only applies to new users entering the test setup.
  • leshokunin 7y ago
    Which is necessary. You don’t want to compare two wildly different users. This is why you need to define criteria for eligibility.