What methods can I use to get a rank?

I am building a ranking system. To get a rank of an item, I have considered using ratio and method.

Let's say I have an item with 10 wins and 10 losses.

Ratio: 10/20 = 0.5 Point: 10 - 10 = 0

What other options do I have?

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A related question on MathOverflow: mathoverflow.net/questions/6019/… – Jonas Meyer Mar 29 '11 at 3:14
@Jonas Meyer // thank you for the link. I am not looking for an answer. I like to know other methods as well. I already know ratio and point method. I am sure that there are much more ways to decide a rank of something. – Moon Mar 29 '11 at 3:19
I don't understand what you mean when you say you are not looking for an answer. I doubt that the MathOverflow question is the same as yours, but you will notice that the ranking methods mentioned there are not only what you call ratio and point methods. – Jonas Meyer Mar 29 '11 at 3:22
@Jonas Meyer // my mistake. I will read the article again! – Moon Mar 29 '11 at 3:23
Have you looked at Wikipedia entry on Ranking? – Sniper Clown Jan 21 '12 at 5:40