Spring 2010 MATLAB Contest, April 28 - May 5
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From: Alan Chalker on 8 May 2010 12:05 "Hannes Naudé" <naude.jj+matlab(a)gmail.com> wrote in message <hs3fqh$7t4$1(a)fred.mathworks.com>... > "Alan Chalker" <alancNOSPAM(a)osc.edu> wrote in message > I doubt that this is important, but entries 1 through 49 appear to be blank in the file you distributed. Not critical, just thought you might want to know. Sorry I forgot to mention that. I wanted the record numbers to align with the entry id numbers, so I started at 50.
From: Sergey Y. on 8 May 2010 13:20 "Jan" <thisis(a)notanemail.com> wrote in message <hs3qch$j13$1(a)fred.mathworks.com>... > Okay, so all 4262 submitted and passed algorithms are currently beeing tested against the test set. I had written my own code because my number cruncher was already working at the time of Alans posting.. However within one day 1334 algorithms (from begining and end of the submission list) have finished and the best so far is DeepCat9 by Sergey Y. (http://www.mathworks.com/matlabcentral/contest/contests/2/submissions/4820) with result 19359469 who actually also scored a final 32nd rank in the contest. However it's not yet over.. :) > > Cheers > Jan Keller > (actually not Jan Langer) :) In last 10 DeepCat9 submissions I modified Contrast calculation and was hunting for best parameter. Unfortunately, simultaneously I introduced another parameter, which move solver significantly from optimal point. (Lesson to myself – read code more carefully ;) ). By my estimation, with correct implementation, modified Contrast calculation should reduce result of base code by 25K Sergey
From: Alan Chalker on 8 May 2010 13:29 "Hannes Naudé" <naude.jj+matlab(a)gmail.com> wrote in message > OK, I can now see why. You do actually have all the entries, but Jan's Ilgaz entry (the first submitted in this contest) is numbered 50. Interestingly if you create the links for earlier entries manually eg. > http://www.mathworks.com/matlabcentral/contest/contests/2/submissions/1 > Then you get submissions from before the contest began. Looks like this was the internal Mathworks contest. Care to tell us who won that and what the best score was? :-) That is interesting. I've grabbed all 49 entries from the internal contest and there are some interesting tidbits: -There is no 1st place final entry according to the ranks. There is a 2nd place entry: #48, with a score of 166203. The 3rd entry of the actual contest (id 53) beat that score by a lot (119888 vs 166203), but ran in less than a second versus the 97 seconds it took for #48 to run. Thus I assume they were using a different test suite. I ran the entry against the sample suite and the results didn't match up either. -29 of the entries passed. Most of the failed entries were deliberate attempts to test the error checking mechanisms of the contest parser. -There were 12 unique authors, including our wonderful contest organizers Helen and Ned. The 'winner' was Teja Muppirala. -It looks like they ran the contest on 4/22 and 4/23 (the Thurs and Fri before the real one started). However, there were entries submitted as early as 4/14 (that aren't showing scored until 4/22), so I suspect there was some sort of queue testing / rerunning of entries going on.
From: Sergey Y. on 8 May 2010 16:19 "Alan Chalker" <alancNOSPAM(a)osc.edu> wrote in message <hs4710$4gk$1(a)fred.mathworks.com>... > -There is no 1st place final entry according to the ranks. There is a 2nd place entry: #48, with a score of 166203. The 3rd entry of the actual contest (id 53) beat that score by a lot (119888 vs 166203), but ran in less than a second versus the 97 seconds it took for #48 to run. Thus I assume they were using a different test suite. I ran the entry against the sample suite and the results didn't match up either. > I was trying to run #48 on sample suite and it crashes on image #7 on griddata (I had the same problem with my darkness version, that force me to abandon griddata function) I am using 2007b version. Anybody can comment on this? Error message is long, starting with: ??? Error using ==> qhullmx qhull precision error: initial facet 1 is coplanar with the interior point Sergey
From: Sergey Y. on 8 May 2010 16:50
"Sergey Y." <ivssnn(a)yahoo.com> wrote in message <hs4gvr$4tv$1(a)fred.mathworks.com>... > "Alan Chalker" <alancNOSPAM(a)osc.edu> wrote in message <hs4710$4gk$1(a)fred.mathworks.com>... > > -There is no 1st place final entry according to the ranks. There is a 2nd place entry: #48, with a score of 166203. The 3rd entry of the actual contest (id 53) beat that score by a lot (119888 vs 166203), but ran in less than a second versus the 97 seconds it took for #48 to run. Thus I assume they were using a different test suite. I ran the entry against the sample suite and the results didn't match up either. > > > > I was trying to run #48 on sample suite and it crashes on image #7 on griddata > (I had the same problem with my darkness version, that force me to abandon griddata function) > I am using 2007b version. Anybody can comment on this? > > Error message is long, starting with: > ??? Error using ==> qhullmx > qhull precision error: initial facet 1 is coplanar with the interior > point > > > Sergey Option {'QJ'} helped. |