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70 Years of GT Football – Strength of Schedule
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<blockquote data-quote="GTNavyNuke" data-source="post: 47288" data-attributes="member: 322"><p>The previous link only had the first page. Here's a link with the description starting 2/3 of the way down the first page at "The Howell Power Ranking System - A Brief Description". <a href="http://www.mediafire.com/download/ntb4d9xst4bppi4/J_Howell_Methodology1.pdf" target="_blank">http://www.mediafire.com/download/ntb4d9xst4bppi4/J_Howell_Methodology1.pdf</a></p><p></p><p>Basically, J Howell assumes a certain power ranking for every team and a certain home field weighting for every team. Then he calculates how well that ranking matches the results. He then changes the numbers a bit and goes through an error minimization process until the Powered Rankings he has assigned have minimized the "error".</p><p></p><p>A good explanation of general practice is at <a href="http://en.wikipedia.org/wiki/Sports_rating_system" target="_blank">http://en.wikipedia.org/wiki/Sports_rating_system</a> . Both my link and the wiki link talk about trade offs in calculating the numbers. As I said before, the biggest problem is that team performance isn't static and we are trying to use historical data which incorporates a teams varying performance to determine a static statistic.</p></blockquote><p></p>
[QUOTE="GTNavyNuke, post: 47288, member: 322"] The previous link only had the first page. Here's a link with the description starting 2/3 of the way down the first page at "The Howell Power Ranking System - A Brief Description". [url]http://www.mediafire.com/download/ntb4d9xst4bppi4/J_Howell_Methodology1.pdf[/url] Basically, J Howell assumes a certain power ranking for every team and a certain home field weighting for every team. Then he calculates how well that ranking matches the results. He then changes the numbers a bit and goes through an error minimization process until the Powered Rankings he has assigned have minimized the "error". A good explanation of general practice is at [url]http://en.wikipedia.org/wiki/Sports_rating_system[/url] . Both my link and the wiki link talk about trade offs in calculating the numbers. As I said before, the biggest problem is that team performance isn't static and we are trying to use historical data which incorporates a teams varying performance to determine a static statistic. [/QUOTE]
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70 Years of GT Football – Strength of Schedule
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