Hacker News new | past | comments | ask | show | jobs | submit login

That is generally an unsolved problem, and highly specific to the situation. Even the interpretation of the question depends on the context. To read more about it, I would look under the term "System Identification" and "Mathematical Modelling", but I might have different contexts in mind that you.

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