Ranking of under-21 players
in [World Football]
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From: milivella on 18 Jan 2010 18:32 Here are the results of the poll about players born in 1989 (or after) held in the following thread: http://groups.google.com/group/rec.sport.soccer/browse_thread/thread/6307eb141a01d810# The RSS ranking of the shortlisted players is: 1. Pato (0.91) 2. Balotelli (0.40) 3. Jovetic (0.23) 4. Krkic (-0.07) 5. Santon (-0.1751) 6. Walcott (-0.1815) 7. Mueller (-0.53) 8. Salvio (-0.59) (Marin and Pastore weren't present in any submitted ranking, so they can't be ranked). --- I have some things to add: I've at least to explain briefly the method that I've used to compute the overall ranking, and I'd like to add some thoughts on the poll. But I'll do it later. (So I'll sleep some minutes more. Bonus: I'll finally leave someone else the chance to be the first to comment!) For the time being, I just point to you to the Excel file with the submissions and the system of equations that produced the above overall ranking: http://rssclash.altervista.org/1989.xls -- Cheers milivella
From: Futbolmetrix on 19 Jan 2010 09:47 "milivella" <milivella(a)gmail.com> wrote in message news:ffac1e4d-b186-487f-914c-427cbfc110b8(a)g25g2000yqd.googlegroups.com... > Here are the results of the poll about players born in 1989 (or after) > held in the following thread: > http://groups.google.com/group/rec.sport.soccer/browse_thread/thread/6307eb141a01d810# > > The RSS ranking of the shortlisted players is: > 1. Pato (0.91) > 2. Balotelli (0.40) > 3. Jovetic (0.23) > 4. Krkic (-0.07) > 5. Santon (-0.1751) > 6. Walcott (-0.1815) > 7. Mueller (-0.53) > 8. Salvio (-0.59) Sorry, Andrea, but I'm afraid you'll have to remind us of how you calculated this ranking. What do the numbers in parentheses mean? Do they actually have cardinal meaning (i.e., the distance between Pato and Balotelli is greater than the distance between Santon and Walcott)? D
From: milivella on 19 Jan 2010 14:12 Futbolmetrix: > Sorry, Andrea, but I'm afraid you'll have to remind us of how you calculated > this ranking. Of course. Actually, I've never explained how I calculated it! I've used Maas' method, so the best thing I can do is just to link to its paper: http://www.maasranking.nl/PDF_Files/mara_v01.pdf [only difference: I've used the "commonly used trick" referred in page 5] The aforementioned paper is so easy that I, knowing nothing about math, got it, so it's OK for everybody. But, if someone just want the juice, here it is, by the means of a very simple example: - If A's ranking is: 1. Pele 2. Maradona - and B's ranking is: 1. Maradona 2. Cruijff - then the overall ranking is: 1. Pele 2. Maradona 3. Cruijff (too simple, I know, but you wanted the juice, didn't you?!) > What do the numbers in parentheses mean? Do they actually have > cardinal meaning (i.e., the distance between Pato and Balotelli is greater > than the distance between Santon and Walcott)? I'm sure that, after quickly reading Maas' paper, you will be able to give a far better answer than the one I am able to give... Anyway, if I'm not wrong, the points assigned by this method to each player... ....are such that their sum is 0 ....are such that, if all players play each other once and you compute a "normal" table rewarding a win with 1 point, if in the "normal" table there is distance of x points between two given players, in our ranking there is a distance of x*k points between the same players, with k being a constant (i.e. always the same for each pair of players). So (and I must repeat: if I'm not wrong!): yes, if you set up a "normal" league among these players with one player playing against each other once, in the final table the distance between Pato and Balotelli would be greater than the distance between Santon and Walcott. -- Cheers milivella
From: milivella on 19 Jan 2010 15:11 milivella: > Here are the results of the poll about players born in 1989 (or after) > held in the following thread:http://groups.google.com/group/rec.sport.soccer/browse_thread/thread/... > > The RSS ranking of the shortlisted players is: > 1. Pato (0.91) > 2. Balotelli (0.40) > 3. Jovetic (0.23) > 4. Krkic (-0.07) > 5. Santon (-0.1751) > 6. Walcott (-0.1815) > 7. Mueller (-0.53) > 8. Salvio (-0.59) > > (Marin and Pastore weren't present in any submitted ranking, so they > can't be ranked). So. Quick and dirty thoughts about the poll: - Basically we all ranked the same six players (Mueller and Pastore were only present in one ranking each), something that make the method I used pretty useless. I should have chosen the players more wisely, and/or I should have shortlisted more players (as long as the number of players each of us rank is five, data entry takes the same time for me (anyway, I know that there must be a method to automatize the whole thing)). - Pato was first according almost to everybody. Balotelli's future is far more debated. It could be interesting to check which player attracts the most constant opinions, and which one the most variated. - Among the six most known players, Walcott is last. Bad news for the guy who picked him in Fantasy Scout! -- Cheers milivella
From: milivella on 20 Jan 2010 08:29
milivella: > Futbolmetrix: > > > Sorry, Andrea, but I'm afraid you'll have to remind us of how you calculated > > this ranking. > > Of course. Actually, I've never explained how I calculated it! > > I've used Maas' method, so the best thing I can do is just to link to > its paper:http://www.maasranking.nl/PDF_Files/mara_v01.pdf This all makes sense if you assume that a ranking = a set of matches among the ranked players. Indeed I've translated submitted rankings in matches: If the following ranking is submitted... 1. Pato 2. Jovetic 3. Balotelli 4. Santon 5. Krkic ....then it's translated in the following 10 matches... Pato wins against Jovetic, Balotelli, Santon and Krkic Jovetic wins against Balotelli, Santon and Krkic Balotelli wins against Santon and Krkic Santon wins against Krkic ....and at this point you can apply Maas' method. -- Cheers milivella |