Browser-busting proto-KRACH thread

Started by jtwcornell91, October 11, 2009, 09:16:13 AM

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Robb

Quote from: jtwcornell91
Quote from: Beeeej
Quote from: ebilmesHow do we not have the worst strength of schedule? We've played the #56, #57, and #58 teams (out of 58!).

I believe SOS is based on the winning percentages of the entire season's schedule, not just those we've already played.  I could be wrong, though.

You are wrong. :-} It's just the games played.  (It's literally calculated as KRACH divided by winning ratio, which happens to equal a weighted average of you're opponents' KRACHes.)
Ok - you gotta 'splain that to me, then.  Our opponents' KRACHes are 0, 0, and 4.5, and our scheduled strength is 98.9.  What kind of a weighted average is that?  Yale's opponents to date (RPI, Union, and Princeton) have KRACHes of 157.6, 71.6, and 42.3, respectively, and Yale's SOS is listed as 77.9.  I could buy that Yale's SOS is a weighted average of those 3 numbers, but what sort of weightings of 0, 0, and 4.5 gives 98.9?

The FAQ at CHN doesn't help, either, because it just says that the weighting factor to use for SOS is the number of times you've played that opponent divided by the sum of your ratings.  Therefore, the weighting factor for each of our three opponents should be 1/(x+infinity) = zero, right?  So then our SOS is 0/0?  But if you do it the other way (KRACH divided by winning ratio), then our SOS would be infinity divided by infinity - we'd need to know something about the limits of each of those zeros or infinities.  How does it come out to 98.9?

Inquiring minds want to know!
Let's Go RED!

adamw

Quote from: RobbInquiring minds want to know!

Well, Cornell is now 48th, so .... ::bolt::
College Hockey News: http://www.collegehockeynews.com

Scersk '97

Quote from: adamw
Quote from: RobbInquiring minds want to know!

Well, Cornell is now 48th, so ....

But in the Bayesian, we're a much more rational #25.