Changes for the 2017 Season

September 23, 2017

Despite what I said back in August, my ratings field is not connected with a diameter of 16 after the 16 September games. For one thing, the eight cancellations or postponements represent a significant number of missing team-pairs. I have also changed the definition of the field for the first time since I started including teams from 1AA.

My reason for not just including all of division 1 in the ratings was that doing so would give too much influence to teams that are very weakly or not at all connected to 1A. The ratings results for the last few years have convinced me that my rules for inclusion were still a little too generous, so I've simplified them a bit. The result is a 216-team field for 2017.

All teams in 1A are included by default (but would have been anyway.) From 1AA we have all teams in the Big Sky, Colonial, Mid-Eastern Athletic, Missour Valley, Southern and Southland conferences. All Big South teams except Liberty and Presbyterian are included, as are all Southwestern Athletic teams except Alabama State, Alcorn State, and Arkansas-Pine Bluff.

These are the teams who have more than half of their games against teams that are 1A or have a 1A team as a scheduled opponent. Games these teams play against teams outside of the field are not included in my ratings calculations. No teams from the Ivy League, Northeast, Patriot or Pioneer are in the field.

With the minor change in its constitution and the cancellations, the field will not be connected until Florida International and Central Florida each play another team in the field. After week 4's games the field will be connected at diameter 10. I may publish preliminary ratings for week 4, but mostly to ensure that the programs still work.

Field Schedule Graph by Week

Number of paths at each length

WeekCIAPLThrough
Games of
PL=1=2=3=4=5=6=7=8=9=10=11=12=13=14=15=16=17=18=+∞
37387.5516-Sep275463777128320022896360335762884201413668474732127828114428
412585.0223-Sep36489420624189651760152589526613 
518804.1530-Sep452142840357945713420301942 
626223.697-Oct54520776231986341963071 
733273.4514-Oct639268879429589229765 
839793.2921-Oct731324892348692130213 
945183.1728-Oct82536931016577537804 
1050373.074-Nov9254112109526804427 
1154873.0011-Nov10234464115155979239 
1260232.9218-Nov11234900120235070104 
1363492.8825-Nov1187516212100468685 
1463762.882-Dec1192518412116464979 
1563802.889-Dec1193518712112464979 

The distance matrix for currently scheduled games is at the Ratings Field for 2017.

© Copyright 2017, Paul Kislanko
Football Home