Statistics Geek {各类link收集贴}

10# Warald

^^
刚收到ASA membership的包裹，发现有些信息满有用的，拿上来分享一下～

也希望各位热爱统计的同学分享有趣的网站和信息

嘿嘿，谢谢瑞木的介绍！
在不久的将来，瑞木就是 ASA Fellow 啦！

嘿嘿，谢谢瑞木的介绍！
在不久的将来，瑞木就是 ASA Fellow 啦！
alittleboy 发表于 2009-6-27 17:57

憧憬着将来到处跟人炫耀， ASA fellow是咱们这个bbs的斑竹~~

12# alittleboy

13# Warald

谢谢alittleboy和Warald老大的祝福

Netflix Prize Update:
http://www.netflixprize.com//leaderboard

BellKor's Pragmatic Chaos 10.05% improvement    2009-06-26 18:42:37

Recall: [from WikiPedia http://en.wikipedia.org/wiki/Netflix_Prize]
The Netflix Prize is an ongoing open competition for the best collaborative filtering algorithm that predicts user ratings for films, based on previous ratings. The competition is held by Netflix, an online DVD-rental service, and is opened for anyone (with some exceptions). The grand prize of $1,000,000 is reserved for the entry which bests Netflix's own algorithm for predicting ratings by 10%.

On June 26, 2009 the team "BellKor's Pragmatic Chaos", a merger of teams "Bellkor in BigChaos" and "Pragmatic Theory", achieved a 10.05% improvement over Cinematch (an RMSE of 0.8558). The Netflix Prize competition has now entered the "last call" period for the Grand Prize. In accord with the Rules, teams have thirty (30) days, until July 26, 2009 18:42:37 UTC, to make submissions that will be considered for this Prize.

Netflix Prize Update:
http://www.netflixprize.com//leaderboard

BellKor's Pragmatic Chaos  10.05% improvement    20 ...
duanmupeiyi 发表于 2009-6-29 11:47

NB...

这边好热闹啊! duanmu MM真是有效率啊~

duanmu 是我等学统计的偶像呀

还是关于Netflix Prize～

到26号就知道那一百万奖金的得主了。
竞争越来越白热化了，08年Progress Prize截止前就有一堆参赛队“合作”，很戏剧化。
When you have a bunch of models, model averaging will give you a better result in general.
BellKor的Chris Volinsky是Director of the Statistics Research Department at AT&T Research in Florham Park, N.J. 他的博士论文的标题是《Bayesian Model Averaging for Censored Survival Models》 ^^

美西时间七月九日 凌晨一点十六， 排行榜的前三及他们的% improvement
1         BellKor's Pragmatic Chaos                 
10.05 %
三队合作。
Bob Bell and Chris Volinsky, members of the Statistics Research Department at AT&T Research, and winner of the 2007 and 2008 Progress Prizes as members of team BellKor.

Yehuda Koren, Senior Research Scientist at Yahoo! Research Israel, and winner of the 2007 and 2008 Progress Prizes as a member of team BellKor.

Andreas Toscher and Michael Jahrer,  machine learning researchers and founders of commendo research and consulting in Austria.  They won the 2008 Progress Prize as  members of the team Big Chaos.

Electrical engineer Martin Piotte and software engineer Martin Chabbert of Montreal, and  founders of Pragmatic Theory.


2              Grand Prize Team                
9.90 %
人很多。。。
Gravity and Dinosaur Planet         这是两个team，the founders of Grand Prize Team
ExpensiveLunch (Joe Sill)
Ces (Ces Bertino)       
blednotik (Dan Nabutovsky)       
Just a guy in a garage (Gavin Potter)       
wrnf2008 (William Roberts)
Wojtek Kulik (Wojtek Kulik)       
GreenCircle (Willem Mestrom)       
(wants to remain anonym)

3              Opera Solutions and Vandelay United        
9.86%
# Newman ! (Bo Yang)
# Craig Carmichael
# Dace (Larry Ya Luo)
# Howbert (Jeff Howbert)
# xlvector (Liang Xiang)
# chef-ele (Chris Hefele)
# Clueless (Bill Bame)
# Aron (Aron Miller)
# Team ESP (Steve Pagliarulo)
# OfADifferentKind (Greg McAlpin)

Business Week上关于Netflix Prize的一篇介绍文章：
http://www.businessweek.com/inno ... ign_id=rss_innovate

Associated Press的报道：
http://www.google.com/hostednews ... k-tp1ondZwD994IS7O0

接近26号的时候一定更热闹，拭目以待～

"The best thing about being a statistician is that you get to play in everyone's backyard."
-- John W. Tukey (June 16, 1915– July 25, 2000)

"Essentially, all models are wrong, but some are useful."
-- Box, George E. P.; Norman R. Draper (1987). Empirical Model-Building and Response Surfaces. Wiley. pp. p. 424.

这个帖子含金量太高拉～～～～～～赞！！