questions on elo ratings

[Mouseycat]

Hi everyone,

I would be grateful to receive any insights from anyone who creates his/her own elo rating formula for football.

Rnew = Rold + K(1-E)

1. How do you determine the value of K. As far as I know, in chess they reduce the k value gradually for some reason that is inapplicable in football. Should K be valued based on a certain ratio between K and the base rating?

2. Elo rating calculates probability of gaining/losing points, aka win/lose, did anyone try to modify it to accommodate draws as well?

3. Did you have a separate elo rating based on home/away results?

4. Can elo rating system be applied on determining team to score first goal?

Thank you in advance!

 

[Sir Puntalot]

You can see mine at the bottom of https://www.punterslounge.com/

Explanation here https://www.punterslounge.com/football-ratings

I weight mine slightly differently for home and away, but not too much. It's obviously slightly harder to win away than it is at home.