{"id":1889,"date":"2021-03-17T02:18:35","date_gmt":"2021-03-17T02:18:35","guid":{"rendered":"http:\/\/www.tehodgson.com\/stompthelunatic\/?p=1889"},"modified":"2021-03-17T02:18:35","modified_gmt":"2021-03-17T02:18:35","slug":"adventures-in-bradley-terry-modeling","status":"publish","type":"post","link":"http:\/\/www.tehodgson.com\/stompthelunatic\/?p=1889","title":{"rendered":"Adventures in Bradley-Terry modeling"},"content":{"rendered":"\n<p>Well, I am still relatively new to modeling on Python &#8211; but I figure why not practice.  I have all this great basketball data.<\/p>\n\n\n\n<p>I remember from past tournaments that Bill Kahn would tell me about the Bradley-Terry models that he created.  And he always did very well in the pool.  So, I definitely don&#8217;t have the experience that Bill has with building these models, it was at least an opportunity to learn a little about Python.<\/p>\n\n\n\n<p>So, I figure I have an extra day thanks to the unusual this schedule &#8211; lets see what I get.  And it is really possible that I made some mistakes.  But I also don&#8217;t think I can use the model.  First of all, it predicted Winthrop would beat both Villanova and Purdue.  I can live with the first upset but I can&#8217;t pick the second one against my Boilers.  Second, it created a prediction that I suspect won&#8217;t happen.<\/p>\n\n\n\n<p>That is because its prediction for the Final 4 are all 4 of the #1 seeds.  March Madness is anything but predictable &#8211; so while I have no doubt that Gonzaga, Baylor, Illinois and Michigan are the top 4 teams in the country based on the regular season, I don&#8217;t think all 4 of them will survive the regionals.  One of the top seeds always goes down.  It is inevitable.<\/p>\n\n\n\n<p>If you are wondering, it finishes with Gonzaga having a 65.7% chance of beating Baylor.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Well, I am still relatively new to modeling on Python &#8211; but I figure why not practice. I have all this great basketball data. I remember from past tournaments that Bill Kahn would tell me about the Bradley-Terry models that he created. And he always did very well in the pool. So, I definitely don&#8217;t [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[41],"tags":[],"class_list":["post-1889","post","type-post","status-publish","format-standard","hentry","category-2021-blog"],"_links":{"self":[{"href":"http:\/\/www.tehodgson.com\/stompthelunatic\/index.php?rest_route=\/wp\/v2\/posts\/1889","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.tehodgson.com\/stompthelunatic\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.tehodgson.com\/stompthelunatic\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.tehodgson.com\/stompthelunatic\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.tehodgson.com\/stompthelunatic\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1889"}],"version-history":[{"count":1,"href":"http:\/\/www.tehodgson.com\/stompthelunatic\/index.php?rest_route=\/wp\/v2\/posts\/1889\/revisions"}],"predecessor-version":[{"id":1890,"href":"http:\/\/www.tehodgson.com\/stompthelunatic\/index.php?rest_route=\/wp\/v2\/posts\/1889\/revisions\/1890"}],"wp:attachment":[{"href":"http:\/\/www.tehodgson.com\/stompthelunatic\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1889"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.tehodgson.com\/stompthelunatic\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1889"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.tehodgson.com\/stompthelunatic\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1889"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}