Use 20 runs per 600 pa as baseline and scale from there, eg, 23.3 runs per 700 pa.
(13*hr+3*bb-2*k)/ip
(0.72*bb+0.9*1b+1.24*2b+1.56*3b+1.95*hr)/pa
http://www.baseball-reference.com/about/parkadjust.shtml
The average number of runs scored from a given base/out state until the end of the inning. Calculated over a period, which I would guess to be 3 years, and always from home team's POV.
- http://www.tangotiger.net/RE9902.html
- http://www.insidethebook.com/ee/index.php/site/article/the_secret_recipes_of_the_run_expectancy_matrix/
The average number of wins attained (again, always from home team's POV) from a given base-out state. Calculated over a period, which I would guess to be 3 years.
Win percentage added from one base-out state to another. As with WE and RE, calculated from home team's POV.