You are hereOur Models

Our Models

Members of The Ensemble have made major breakthroughs in the accuracy and in the performance of recommender algorithms.


Single programs created by our members achieved these results.

Craig Carmichael created multiple models that had a quiz RMSE of 0.87xx.
7.64% improvement

Nicholas Ampazis and George Tsagas from the Feeds2 team created multiple models that had quiz RMSEs of 0.87xx. Their best result was 0.8787.

7.85% improvement

Edward De Grijs included a number of novel improvements in a single model that obtained a quiz RMSE of 0.8767. His algorithm is not a time model, has low complexity, and it automatically finds the optimum parameters.

7.65% improvement

Jeff Howbert (team 'Howbert') created a time based matrix factorization algorithm that achieved a quiz RMSE of 0.8786.

Using some new ways of capturing long-term and short-term time effects, Larry Ya Luo, a.k.a. Dace created a directly trained model that can achieve 0.877x quiz RMSE. With further post-processing, 0.875x can be achieved by a single predicator.
8.24% improvement

Aron Miller created what might be the best single algorithm yet discovered (with a quiz RMSE of 0.8730 or an 8.24% improvement over Cinematch's original score). Email aroneus at yahoo


Single programs written by our members were able to make extremely accurate predictions in record setting time.

Nicholas Ampazis and George Tsagas from the Feeds2 team implemented all of their SVD models (except SVD++ variants) so that they converge in under 5 minutes.
7.08% accuracy improvement in 8 minutes
More than 3,000% performance improvement

Wojtek Kulik created an algorithm that produced a 0.8840 quiz RMSE solution in eight (8) minutes (including reading raw data and writing result file) on an AMD 64 X2 Dual Core @5200+ machine, without using parallelism of any kind (like CUDA, OpenMP, etc.).

Other published models take from 4 to 8 hours to approach this level of accuracy.

His SVD implementation converges in less than one minute.

7,500% performance improvement for kNN

Bo Yang (known as Newman ! on the leaderboard and forum) improved the performance of standard K Nearest Neighbor algorithms by 7,500%. He decreased the time needed to calculate 316 million relationships between objects from 2.5 hours to 2 minutes.

He used a PC with Intel Core2 Quad CPU (4 cores) @ 2.4G Hz, 2 GB of RAM, running Window XP. Most code was written in C++, built by Visual Studio 2008.

Excellent blog! The information here is just outstanding and to be honest, this is the best article I have seen in a year. Keep the outstanding work going on! teeth whitening

Wow! What a extra ordinary article this is. Truly, this belongs to the category of the best articles ever. It should have it's name in the article Hall of Fame. Some super work!

Win this awesome Japanese game -. Brave Frontier, with using our ultimate cheat tool. Generate all resources in infinite amounts!

Excellent choice of words on this article. The words have been chosen very carefully and the information makes sense as well. A great article, one has to say, this is. best precious metals ira

Thanks for ones marvelous posting! I genuinely enjoyed reading it, you are a great author. I will be sure to bookmark your blog and may come back very soon. I want to encourage you to definitely continue your great job, have a nice weekend.

Many thanks for the exciting blog posting! Simply put your blog post to my favorite blog list and will look forward for additional updates. Simply wanted to write down a word in order to say thanks to you for those wonderful tips.Locked out of house

Very nice information has been shared on this blog post today. I really appreciate it and I hope that you will keep on giving us such amazing blog posts in the future as well. Thanks for this! tao attraction

Woah! I'm really lovinng the template/theme of this website.
It's simple, yet effective. A lot of times it's difficult to get that "perfect balance" between usability
and visual appearance. I must say you have done a superb job with this. Distributor Indonesia

Took me time to understand all of the comments, but I seriously enjoyed the write-up. It proved being really helpful to me and Im positive to all of the commenters right here! Its constantly nice when you can not only be informed, but also entertained! I am certain you had enjoyable writing this write-up.

ef="">pdf to flash | pdf converter PDF offers some security advantages so that people are unable to access the content, copy the content, or use the content without your permission by requiring a password to do more then read the file.
A PDF is a format for delivering content just as an exe file is.

I really impressed Cheap mobile wallet after read this because of some quality work and informative thoughts.

hello there and thank you for your information – I've definitely picked up something new from
right here. I did however expertise several technical points
using this web site, since I experienced to reload the web site a lot of times previous to I could get it to load
properly. I had been wondering if your hosting is OK?
Not that I'm complaining, but sluggish loading instances times will sometimes
affect your placement in google and could damage your high-quality score if ads and marketing with Adwords.
Anyway I am adding this RSS to my e-mail and can look out for a lot more of your respective fascinating content.
Ensure that you update this again very soon.

J'ai pratiqué mien art depuis mien adolescence.

Et aujourd'hui, après une traintaine d'années
de cela, la voyance est continuellement mon métier etma idolâtrie malgré cet patte grandi nuit et journée.

Grâce à ces longues années à fabriquer ça métier j'détiens pu aider de nombreuses personnes.
J'capture mondon par ma curiosité alors mes désir sur la réelle
possibilité de percevoir le passé puis ceci postérieur.
Nous-même fais ce métier la plupart du date pouraider ces autres, d'apporter des pédagogie relatives
aux embrouilles qu'rare imbécile a enragé ceci
malheur de rencontrer. Moi-même cela fait encore pourapporter
de la lumière sur des choses passées alors enfouies
dont tourmentent ces pensées des gens.

You clearly know what you're talking about, why waste your intelligence on just posting videos to your blog when you could be giving us something enlightening to read? tre geylang

really enjoy simply reading all of your weblogs. I simply wanted to inform you that you have people like me who appreciate your work.

I just wanted to come here and tell you that you have done a really impressive job on this article and it would be a waste to see that you don't follow this article up with another brilliant article. I would really love to see that! Customer Support software

I am always searching online for articles that can help me. There is obviously a lot to know about this. I think you made some good points in Features also. Keep working, great job!

Pretty good post. I just stumbled upon your blog and wanted to say that I have really enjoyed reading your blog posts. Any way I’ll be subscribing to your feed and I hope you post again soon.

Really impressed! Everything is very open and very clear clarification of issues. It contains truly facts. Your website is very valuable. Thanks for sharing. It's late finding this act. At least, it's a thing to be familiar with that there are such events exist. I agree with your Blog and I will be back to inspect it more in the future so please keep up your home method

This is an excellent post I seen thanks to share it. It is really what I wanted to see hope in future you will continue for sharing such a excellent post. Play Friv 2 or Friv 3 Games Online.

I'm really happy to find this site and did enjoy reading useful articles posted here. The ideas of the author was awesome, thanks for the share. fitness affiliate programs

I'm really happy to find this site and did enjoy reading useful articles posted here. The ideas of the author was awesome, thanks for the share. 401k rollover to gold IRA

Many thanks for the exciting blog posting! Simply put your blog post to my favorite blog list and will look forward for additional updates.

Thanks for taking the time to discuss this, I feel strongly love and read more on this topic. If possible, such as gain knowledge, would you mind updating your blog with additional information? It is very useful for me.sbobet mobile

In 2003 the couple purchased property at the corner of the Skyway, a main artery in Chico, and Bruce Road, and erected a 6500 sq ft tool store that opened in 2005. Once more the Gillis Family had a grand opening and hundreds of friends. Challenger Parts Catalog 2012

Hurrah! Finally I got a webpage from where I know how to really obtain useful facts regarding my
study and knowledge.

My web page - Fatin Shidqia Lubis

A single working ear, or a cochlear implant. A telepathic line of communication with the veiny brain scientists of Talos IV, even. It's not a well-kept secret. At this point, I bet Mad Men really is going to end with Don taking a nosedive out the window, just because it seems so obvious swa cable

The Android Emulator from the Android SDK seemed unusably slow. Lucklily, I found a way to use an Android Virtual Machine for VirtualBox that worked nearly as fast as my native computer! This page documents my experiences bio photos

​ses sistemi This is a great inspiring article.I am pretty much pleased with your good work.You put really very helpful information. Keep it up. Keep blogging. Looking to reading your next post.

J'aі comme l'impression que ce post va atterriг sur un site weƅ

Here is my web bloǥ; partouze hardcore

This is what a company needs, a level of motivation dedication and hard work that may leads company profit every year, if you think that you can work online for pakistani drama through search engine then i would add that you do not need to worry about that as we provide latest videos to quench your thrust.

I am going to rate this blog post a 10/10. It's certianly the best blog post I've read in a pretty long time. Thanks very much for putting this up for us to read. Really appreciate your help, my man. Cheers! becoming a yoga teacher

VERY USE FULL post i am expert in bloger .

website These women know how to please. You won’t be left with the frustrated feeling dating too often leaves you with. Instead, after the experience is over, you will be able to enjoy your memories of it forever.
1.harga mesin cuci lg
2.Daftar Harga Pompa Air
3.Harga Mesin Cuci Laundry
4.harga mesin jahit singer
5.10 masjid termegah di dunia
6.10 masjid termegah di dunia

This is very interesting, You are a very skilled blogger.
I've joined your rss feed and look forward to seeking more of your great post.
Also, I have shared your website in my social networks!

My family members every time say that I am killing
my tiime here at net, however I know I am getting knowledge every day by reading such pleasant

Sac à Main Longchamp Pliage Sac Bandoulière Longchamp sKkqs Prima di questa scrivania ogni volta che dovevo andare da qualche parte o ottenere qualcosa, anche se era
nel bel mezzo di un ufficio adiacente, sarebbe
un po 'di esitazione. Ho davvero bisogno è sufficiente a giustificare la mia posizione seduta?
Spesso la risposta sarebbe sì, ma più che vorrei solo tacere, e ho pensato che avrei avuto in un secondo momento.

Longchamp Statue de Liberte Sac à Dos Longchamp HEWWY Informazioni
ShowKSDK Oz Show location Mostrami ProgrammingNBC p Oggi St.
Louis LouisThe Frontline scrisse annunci HopeTV. Sacs Longchamp
Lady Space Dog Longchamp Le Pliage Sac Hobo ZUSvs Ma ci sembrava sempre essere alcune
rocce piatte in mezzo alla strada o appartamento ish pavimentazione in questi settori.
Ho appena preso la mia strada lungo i pezzi piatti e andava bene.
Sac Bandoulière Longchamp Sac Bandoulière Longchamp EaySX Se lei ha detto in una e-mail a me, o io
detto nel inviato a voi ^ ^. In ogni caso, tu eri involvedof corso completamente dimenticato che io
abbia mai avendo detto Inferno, così ho pensato che te piacerebbe
risparmiare tempo e solo una ricerca al computer ^ ^.. Sac
à épaule Longchamp Sac à Dos Longchamp bfqRW È possibile disinfettare 3 o 4 cucchiai di bicarbonato di sodio e cospargere ogni scarpa può aiutare a neutralizzare l'odore.
Lasciate riposare per diverse ore o durante la notte, poi basta avere un buco.

Sac à Dos Longchamp Longchamp Le Pliage Sac Hobo
IFmmR Revisione 2014 fiscale scuola, week-end esente da imposte include una disposizione per eliminare la condizione originale.
Energy Star appliances.North Carolina legislatori vanno
anche l'anno prossimo e ha detto che ha perso milioni
di imposta sulle vendite weekend di vacanza per la festa tassa statale abbonamento annuale.
Longchamp Statue de Liberte Sac Longchamp Edition Spéci HwRiA Danno Mayfield
Road: Un residente ha riferito il 26 maggio qualcuno che cerca di tirare la copertina della sua auto e ha scritto un messaggio sul
suo polvere finestrino della macchina fosse qui, leggere
25.5. PO Box indirizzo in Mallard Drive e Longwood e Marnell modi.
Sac à Dos Longchamp Longchamp Statue de Liberte HNlGw Appena fuori dalla camera da letto, attraverso il gabinetto sotto una scala in marmo, c'è una
porta segreta in un sistema informatico che controlla l'illuminazione,
ombre, e la musica suona dolcemente nell'altra stanza. Inoltre è un luminoso
foyer twostory che si apre sul cortile incorniciato da ali Uobrazny casa.

This is one of the best posts that I have ever seen. You may include some more ideas in the same topic.
Cara Cepat Hamil

At the end of the project we hope to produce resources that will be meaningful and useful to the sector and inform the building of collaborations around the principals of fairness and equality

especially blogging and citizen journalism. With convention delegates and the media armed with iPhones and using Instagram, Twitter, YouTube & Facebook this has election is more connected & real-time than any that has come before

definitely enjoying every little bit of it. It is a great website and nice share. I want to thank you. Good job! You guys do a great blog, and have some great contents. Keep up the good

I am a new user of this site so here i saw multiple articles and posts posted by this site,I curious more interest in some of them hope you will give more information on this topics in your next articles.

Definitely imagine that that you said. Your favorite reason appeared to be on the internet the simplest thing to consider of. I say to you, I certainly get irked at the same time as other people consider concerns that they plainly don't know about. You managed to hit the nail upon the highest and also outlined out the entire thing without having side effect , other folks can take a signal. Will likely be back to get more. Thank you That is really fascinating, You're an overly professional blogger. I have joined your feed and sit up for seeking more of your wonderful post. Also, I've shared your site in my social networks! Hey There. I discovered your blog the use of msn. This is a really well written article. I’ll be sure to bookmark it and return to learn extra of your useful information. Thanks for the post. I will definitely comeback. I beloved up to you'll obtain performed right here. The sketch is tasteful, your authored subject matter stylish. however, you command get got an impatience over that you wish be handing over the following. unwell indisputably come more formerly once more since precisely the same nearly very continuously inside of case you shield this increase. Hello, i feel that i saw you visited my weblog thus i came to “return the desire”.I'm trying to find issues to improve my web site!I assume its good enough to use a few of your ideas!! Simply want to say your article is as surprising. The clarity in your publish is just great and that i can assume you are knowledgeable on this subject. Well together with your permission allow me to clutch your feed to stay up to date with forthcoming post. Thanks 1,000,000 and please keep up the gratifying work. Its like you learn my thoughts! You appear to know a lot approximately this, such as you wrote the e book in it or something. I believe that you just could do with a few % to pressure the message home a little bit, however other than that, this is magnificent blog. A great read. I will certainly be back. Thanks for the auspicious writeup. It in reality was a amusement account it. Glance advanced to more added agreeable from you! By the way, how can we keep in touch? Hey there, You've performed a great job. I will certainly digg it and for my part recommend to my friends. I am sure they will be benefited from this website. Wonderful beat ! I wish to apprentice while you amend your website, how could i subscribe for a blog web site? The account helped me a appropriate deal. I have been tiny bit familiar of this your broadcast offered vibrant transparent concept I'm really impressed together with your writing abilities and also with the layout for your weblog. Is that this a paid subject or did you customize it your self? Either way keep up the nice quality writing, it is uncommon to look a nice weblog like this one today. . Pretty portion of content. I just stumbled upon your blog and in accession capital to say that I get actually enjoyed account your blog posts. Anyway I will be subscribing to your augment or even I fulfillment you get right of entry to constantly quickly. My brother suggested I may like this website. He was once totally right. This post actually made my day. You cann't believe just how much time I had spent for this information! Thank you! I don’t even know how I finished up right here, however I believed this post was once great. I do not recognise who you're but definitely you're going to a well-known blogger in case you aren't already ;) Cheers! Heya i’m for the first time here. I came across this board and I find It really helpful & it helped me out a lot. I hope to provide something back and aid others such as you helped me. I used to be suggested this web site by way of my cousin. I'm no longer certain whether or not this publish is written through him as no one else recognize such specific approximately my trouble. You are amazing! Thanks! Excellent blog here! Additionally your website so much up very fast! What host are you the use of? Can I am getting your affiliate link for your host? I want my website loaded up as quickly as yours lol Wow, awesome blog structure! How long have you been running a blog for? you make running a blog look easy. The total look of your site is excellent, let alone the content material! I am now not positive where you're getting your information, but great topic. I needs to spend some time finding out more or figuring out more. Thank you for magnificent info I was searching for this info for my mission. You actually make it appear really easy with your presentation but I to find this topic to be actually one thing which I feel I'd never understand. It sort of feels too complex and extremely huge for me. I am having a look forward on your subsequent put up, I will attempt to get the cling of it! I have been browsing online greater than 3 hours lately, but I never discovered any fascinating article like yours. It’s lovely worth enough for me. Personally, if all web owners and bloggers made good content material as you did, the internet can be much more useful than ever before. I do trust all the ideas you have presented on your post. They are very convincing and can certainly work. Nonetheless, the posts are very brief for newbies. May just you please extend them a bit from subsequent time? Thank you for the post. You can certainly see your enthusiasm within the paintings you write. The arena hopes for even more passionate writers such as you who are not afraid to mention how they believe. Always go after your heart. I will immediately grab your rss as I can't in finding your e-mail subscription hyperlink or newsletter service. Do you have any? Please let me understand so that I may just subscribe. Thanks. Somebody necessarily lend a hand to make significantly articles I would state. This is the first time I frequented your web page and to this point? I surprised with the research you made to make this actual submit extraordinary. Great activity! Wonderful website. Plenty of useful info here. I’m sending it to several friends ans additionally sharing in delicious. And certainly, thank you to your sweat! hi!,I like your writing very much! proportion we communicate extra approximately your post on AOL? I require an expert in this area to solve my problem. May be that's you! Taking a look forward to see you. F*ckin’ awesome issues here. I am very glad to look your article. Thanks so much and i am looking ahead to touch you. Will you kindly drop me a e-mail? I just couldn't go away your site prior to suggesting that I actually enjoyed the standard information an individual provide in your guests? Is going to be again incessantly in order to inspect new posts you are actually a just right webmaster. The website loading velocity is incredible. It sort of feels that you're doing any distinctive trick. Furthermore, The contents are masterpiece. you have performed a great activity in this topic! Thanks a lot for sharing this with all people you really recognise what you're speaking approximately! Bookmarked.

Happy to see your blog as it is just what I’ve looking for and excited to read all the posts. I am looking forward to another great article from you.
Sewa Sofa
Sewa Alat Pesta
Sewa Tenda

It’s really a nice and helpful piece of information. I’m glad that you shared this helpful info with us. Please keep us informed like this.
Sewa Kursi
Sewa Sofa Jakarta

Thank you for another informative blog. Where else could I get that kind of info written in such a perfect way? I have a project that I am just now working on, and I have been on the look out for such information.
Penyewaan Sofa VIP
Penyewaan Sofa

I really appreciate this post. I’ve been looking everywhere for this! Thank goodness I found it on Google. You have made my day! Thank you again
Sewa Tenda Pernikahan
Sewa Tenda Jakarta
Sewa Tenda Dekorasi

Thank you for another informative blog. Where else could I get that kind of info written in such a perfect way? I have a project that I am just now working on, and I have been on the look out for such information.
Sewa Tenda VIP
Sewa Tenda Canopy
Sewa Tenda Kerucut

All the contents you mentioned in post is too good and can be very useful. I will keep it in mind, thanks for sharing the information keep updating, looking forward for more posts.Thanks.
Sewa Tenda Murah
Sewa Tenda Rigging
Sewa Tenda Roder

Your article has piqued a lot of positive interest. I can see why since you have done such a good job of making it interesting.
Minimalis Single Seater
Puff Minimalis

Happy to see your blog as it is just what I’ve looking for and excited to read all the posts. I am looking forward to another great article from you.
Bench Minimalis
Minimalis Double Seater

Design is a funny word. Some people think design means how it looks. But of course, if you dig deeper, it's really how it works.
Alat Pemadam Thermatic
Tabung Pemadam Api
Tabung Pemadam Kebakaran

Happy to see your blog as it is just what I’ve looking for and excited to read all the posts. I am looking forward to another great article from you.
Harga Alat Pemadam
Alat Pemadam Kebakaran
Alat Pemadam Api

It’s really a nice and helpful piece of information. I’m glad that you shared this helpful info with us. Please keep us informed like this.
Alat Pemadam Kebakaran
Alat Pemadam Ringan
Pemadam Kebakaran Kg

I really appreciate this post. I’ve been looking everywhere for this! Thank goodness I found it on Google. You have made my day! Thank you again.
Alat Pemadam APAR
Harga Alat Pemadam

Sewa Alat Pesta Murah Jakarta
Sewa Kursi Murah Jakarta

The integrated production process features an Engel viper 40 double robot and an Engel easix multi-axis robot, for trimming the overlapping foil with an ultrasonic cutting head Low price good backlinks service

Tahukah anda apa yang dimaksud dengan HIV?
obat hiv aids herbal - HIV merupakah suatu jenis virus yang mengakibatkan penyakit AIDS. Virus AIDS biasanya menyerang seseorang dan menyerang sistem imun seseorang, pada akhirnya mengakibatkan tubuh menjadi melemah dalam melawan infeksi. Orang yang terkena HIV AIDS sering kekurangan sistem imun di dalam tubuh.
Obat Tradisional AIDS Terampuh
Obat Tradisional HIV AIDS amazon Ajaib merupakan salah satu Obat Tradisional HIV/AIDS terbaik. Menurut F. Franklin L.L., selaku konselor yang sudah membuktikan kegunaan Obat Herbal HIV amazon Ajaib sanggup mengobati kepada pasien penyakit AIDS. Dengan hadirnya Obat Tradisional HIV/AIDS amazon Ajaib pastinya amat membantu kepada kebanyakan pasien AIDS agar bisa bertahan hidup lama. Dr. F.Franklin L.L. menjelaskan bahwa, pada saat ini beliau sudah membantu para penderita HIV AIDS dari segala macam daerah, contohnya dari Pati, Surabaya, Jambi, Riau, Ambon, Jakarta, Ambon, Papua.
Obat Penyakit HIV AIDS amazon Ajaib diracik dengan ekstrak kulit buah manggis, madu murni, bunga rosella. Tentu saja aman jika diminum, tanpa efek samping serta mampu menghidupkan sel-sel di dalam tubuh.
Manfaat Obat Alami AIDS amazon Plus Ajaib
Kegunaan Obat Herbal HIV amazon Ajaib sungguh luar biasa yang dirasakan oleh penderita AIDS dan beberapa jenis penyakit kritis lainnya seperti Kanker, Diabetes Stroke, dll.
Beliau Ibu Sumiati umurnya 52 tahun, berasal dari Sumatera. Sudah beberapa tahun beliau mengidap sakit HIV AIDS, namun sampai sekarang tidak ada obat yang bisa menyembuhkannya. Sampai akhirnya ia bertemu dengan teman lamanya. sahabatnya menawarkan mengenai obat hiv aids herbal amazon. Singkat cerita ia minum Obat AIDS amazon Plus Ajaib, konsumsi pertama beliau Cuma 1 bulan, dan kondisi badannya sudah tampak lebih segar, bisa makan, enak tidur dan sudah tidak mual-mual lagi. Sangat luar biasa sekarang ini beliau sudah dapat melakukan rutinitas sama seperti selayaknya manusia normal pada umumnya.

Uѕսally I don't reaԁ article on blogs, ɦowever I
would like to say that this write-սp very pressureԁ me to trʏ and
do it! Youг writing style has bеen ѕurprised me.
Thаnks, very great pօst.

I will definitely bookmark your site and visit this website again in the future. Thanks a lot for posting this valuable info for us. King regards! acrylic brochure holders