kddcup2011 : Messages : 27-58 of 234

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27		Yehuda Koren yehudako	Mar 1, 2011 3:30 pm
	Given the construction of its test set, Track2 users are those having enough high ratings to songs (tracks)....
28		Yehuda Koren yehudako	Mar 1, 2011 3:51 pm
	Just to avoid misunderstanding, the selection criteria I mentioned below refers only to the Track2 test set, not to its Train set....
29		qingshengz	Mar 1, 2011 5:42 pm
	Dear guy: I can't extract the downloaded sample dataset. everyone meet this problem? Thanks in advance David...
30		Markus Weimer markus@...	Mar 1, 2011 6:18 pm
	Hello, there has been a small hiccup with the datasets on the website: The file for track1 carries a .bz2 extension, while it in fact is gzip compressed. We...
31		zinzp	Mar 1, 2011 7:19 pm
	Hey Guys, I am not able to find the registration link for the KDD Cup. Can you please provide me the link or inform me where I can register myself? Waiting for...
32		Markus Weimer markus@...	Mar 1, 2011 11:03 pm
	Hello, the registration page should be open by now under: http://kddcup.yahoo.com/registration.php Take care, Markus...
33		mikewinsteps	Mar 2, 2011 2:14 am
	To identify whether an ItemId is a song/track, album, artist or genre: Songs =(Tracks) are numbered 0-624960 Albums are numbered 9-624943 and "None" Artists...
34		mikewinsteps	Mar 2, 2011 2:36 am
	Track 2: to identify whether an ItemId is a song/track, album, artist or genre: Songs =(Tracks) are numbered 1-296110 Albums are numbered 0-296109 and "None" ...
35		mikewinsteps	Mar 2, 2011 3:01 am
	In the Track 2 instructions, there are 6 ratings for each User:: 3 observed high ratings 3 imputed ratings, assigned sample average values The challenge is...
36		Zhaoquan Yuan zqyuanustc@...	Mar 2, 2011 4:36 am
	-- Best regards, Zhaoquan Yuan ... National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Science, Tel: +86-187-0151-6100...
37		gideon.dror	Mar 2, 2011 2:26 pm
	Yes, we mean differentiate the 3 observed ratings from the 3 items artificially assigned to the user with fictitious ratings....
38		fab.mariotti@... g_silvestro	Mar 3, 2011 1:07 am
	Dears, I am sorry I just jump in. Proly repeating a thread. But would it be possible to have details on the evaluation? Beside some exadecimal/real numbers...
39		Markus Weimer markus@...	Mar 3, 2011 6:57 pm
	Hi, what details about the evaluation are you after? We use RMSE for Track1 and the error rate for Track2. Take care, Markus...
40		hiha.ji	Mar 4, 2011 1:57 am
	Hi, How come that the search function does not work on this forum ?! Regards...
41		Walter Lam wmlminer	Mar 4, 2011 5:38 pm
	Hi, one question, how can one be sure that the registration was correct ? The registration page displays some textboxes and a "save" button. When i return,...
42		Markus Weimer markus@...	Mar 4, 2011 11:00 pm
	Hi, thanks for noticing! We are investigating the issue. Take care, Markus...
43		Markus Weimer markus@...	Mar 4, 2011 11:06 pm
	Hi, if you go to the page and it is already filled out, you are successfully registered. You can confirm that by logging out of Yahoo! and then visiting the...
44		Markus weimer...	Mar 4, 2011 11:37 pm
	Hi, it is fixed now. Take care, Markus...
45		hiha.ji	Mar 5, 2011 5:13 am
	Hi, You're welcome. Thank you for fixing it !...
47		Markus Weimer markus@...	Mar 7, 2011 5:29 am
	Hello, there is a description of the format on the KDD Cup website: http://kddcup.yahoo.com/datasets.php I believe the information you are after can be found...
48		hiha.ji	Mar 7, 2011 6:04 am
	Hello, In the FAQs section, it says: "We will provide a simple sample program that reads the data, produces a simple model and writes a file with predictions...
49		Markus Weimer markus@...	Mar 7, 2011 7:16 pm
	Hi, yes the sample code will be available at the time the competition starts, if not earlier. Take care, Markus...
50		team_exl	Mar 8, 2011 1:39 am
	Do we have to supply all team member names before March 15? Can we add names to the team during the competition?...
51		netan2011	Mar 8, 2011 8:52 pm
	We are looking forward to get our hands on this huge data set! When we had a first brainstorming session we came up with the question on how users selected the...
52		aragorn459 aragorn459@...	Mar 8, 2011 10:50 pm
	Hello, A quick question on how the ratings were collected: It seems that some users have rated dozens of items on the same day, at the same time. For instance,...
53		Walter Lam wmlminer	Mar 9, 2011 12:39 am
	I have the same doubt. How can it be that at the same time many items have been rated ? Thanks. W ... From: aragorn459 <aragorn459@...> Subject:...
54		team_exl	Mar 11, 2011 3:33 am
	Hello, I tried sending an email to kdd2011@... and it was bounced. Thanks. Team EXL...
55		Krishna Sankar xsankar	Mar 11, 2011 3:52 am
	Just as FYI, from what I have seen, yahoo-inc.com is an internal domain for yahoo. Yahoo.com is the external facing domain. From: team_exl...
57		blattnerma@... blattnerma	Mar 11, 2011 10:54 am
	Hi there How can a user rate about 200 different artists in the same minute (user # 1)? Is there more detailed information about the data collecting process? ...
58		epfl_ch epfl_ch@...	Mar 11, 2011 2:40 pm
	Hi, I think there is already an pending question on this: http://tech.groups.yahoo.com/group/kddcup2011/message/52 Best...

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