most recent 30 from http://mathoverflow.net 2013-06-19T09:46:04Z http://mathoverflow.net/feeds/user/9120 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/38217/elo-rating-system-help-with-the-maths-around-number-of-matches Barry 2010-09-09T18:54:49Z 2010-09-14T01:45:52Z

<p>I'm creating a system that will allow people to rate images.</p> <p>My idea is to use an Elo Rating system (http://en.wikipedia.org/wiki/Elo_rating_system) for each image and then use crowdsourcing to have people say if an individual image is better than another i.e </p> <p>Is A better than B </p> <p>This will be used to updated the Elo rating of A and B, eventually I would end up ranking all the images from supposedly the best to worse.</p> <p>For this I have two questions</p> <ol> <li><p>Is this the correct use of Elo or should I be looking at another rating scheme.</p></li> <li><p>If the ELO rating is correct and I have 100 images how many "matches" do I need before I can confidently look at the ranking ?</p></li> </ol>

http://mathoverflow.net/questions/38217/elo-rating-system-help-with-the-maths-around-number-of-matches Barry 2010-09-13T23:39:57Z 2010-09-13T23:39:57Z

Per Vognsen, The machine learning problem is exactly what I'm after but I want the entire population rather than a individual's preference which is why clustering doesn't help me at this time.

http://mathoverflow.net/questions/38217/elo-rating-system-help-with-the-maths-around-number-of-matches Barry 2010-09-09T19:00:35Z 2010-09-09T19:00:35Z

Here is a reference to the ELO Rating algorithm <a href="http://en.wikipedia.org/wiki/Elo_rating_system" rel="nofollow">en.wikipedia.org/wiki/Elo_rating_system</a>. It is used to rank &quot;teams&quot; in sports and from my research it seemed to fit into a maths type question