Choose a fund size, a number of investments, how much to reserve for follow-on, and a few other details and we'll tell you how your fund might perform.
Fund Models allow you to play with the basic levers of a venture portfolio; things like portfolio size, follow-on rates and capital reserves, etc.
There are different ways to evaluate models. TVPIs (cash-on-cash multiple) is the most common measure. Median or top-quartial/decile may be more useful for your purposes depending on whether you are optimizing for consaistent returns or the chance for more extreme returns.