Hacker Newsnew | past | comments | ask | show | jobs | submitlogin

backtest on data collected after the day of release. Unless they have a time machine, or are themselves consuming the power you are measuring, it won't leak any data.


yes, that's why i mentioned *for many domains which don't generate new data super quickly* ...




Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: