{
  "id": 10775,
  "title": "Competition Restarted",
  "url": "/competitions/avazu-ctr-prediction/discussion/10775",
  "author_name": "",
  "post_date": "2014-10-28T19:28:03.647Z",
  "votes": 2,
  "comment_count": 32,
  "views": 7207,
  "content": "<p>Thanks for your patience as we corrected the data issue. Revised files are now available from the <a href=\"https://www.kaggle.com/c/avazu-ctr-prediction/data\">Data</a>&nbsp;page. I have also invalidated all previous submissions to the competition. Good luck with the competition, everyone!</p>",
  "messages": [
    {
      "id": "56923",
      "postDate": "10/28/2014 19:28:03",
      "content": "<p>Thanks for your patience as we corrected the data issue. Revised files are now available from the <a href=\"https://www.kaggle.com/c/avazu-ctr-prediction/data\">Data</a>&nbsp;page. I have also invalidated all previous submissions to the competition. Good luck with the competition, everyone!</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56926",
      "postDate": "10/28/2014 19:42:07",
      "content": "<p>Are you sure there aren't a few bugs left in your data export scripts and elsewhere? Have you run appropriate tests and sanity checks?&nbsp;</p>\n<p>Besides the temporal aberration that now seems to be corrected, the data looks nothing like what I'm used to in the industry. Mobile CTRs between 10 to 25%, really? In practice you'll never see anything above 1%, and that's the best case (generally involving fraud and dark patterns in ad placement), industry average is more like 0.1%.</p>\n<p>I'm having a hard time believing this data is legit.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56928",
      "postDate": "10/28/2014 19:57:40",
      "content": "<p>It could be due to subsampling.&nbsp;https://www.kaggle.com/c/criteo-display-ad-challenge/forums/t/10047/leader-board-0-44xx-is-the-best/52066#post52066</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56929",
      "postDate": "10/28/2014 20:10:32",
      "content": "<p>Also, please update the Data page to include the <a href=\"http://www.kaggle.com/c/avazu-ctr-prediction/forums/t/10729/welcome-to-avazu-ctr-prediction-contest/56818#post56818\">additional details shared in the forums</a>&nbsp;about the meanings of some columns.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56930",
      "postDate": "10/28/2014 20:15:49",
      "content": "<p>Seems there is other mess to be cleaned up. When I enter our team's name, It says &quot;team name is already in use.&quot; Apparently the system confuses with our team's old record before all this. And my submission has been evaluated for half an hour and it is still pending.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56931",
      "postDate": "10/28/2014 20:33:20",
      "content": "<p>[quote=Synthient;56929]</p>\n<p>Also, please update the Data page to include the <a href=\"http://www.kaggle.com/c/avazu-ctr-prediction/forums/t/10729/welcome-to-avazu-ctr-prediction-contest/56818#post56818\">additional details shared in the forums</a>&nbsp;about the meanings of some columns.</p>\n<p>[/quote]</p>\n<p>The &quot;additional details&quot; are simply column header names, which are now included in the data file itself.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56933",
      "postDate": "10/28/2014 20:40:17",
      "content": "<p>Joyce,</p>\n<p>are submissions working? mine seems to be pending for &gt;20mins now (and the uncompressed file is not that big)...</p>\n<p>thanks,</p>\n<p>K</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56934",
      "postDate": "10/28/2014 20:42:08",
      "content": "<p>[quote=joycenv;56931]</p>\n<p>[quote=Synthient;56929]</p>\n<p>Also, please update the Data page to include the <a href=\"http://www.kaggle.com/c/avazu-ctr-prediction/forums/t/10729/welcome-to-avazu-ctr-prediction-contest/56818#post56818\">additional details shared in the forums</a>&nbsp;about the meanings of some columns.</p>\n<p>[/quote]</p>\n<p>The &quot;additional details&quot; are simply column header names, which are now included in the data file itself.</p>\n<p>[/quote]</p>\n\n<p>...which is different from the Data page which still says &quot;C1-C24: 24 anonymized variables&quot;. It's now C1-4, C20-24: 9 anonymized variables.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56935",
      "postDate": "10/28/2014 20:44:45",
      "content": "<p>Submissions issue seems to be there in all competitions, scoring engine is slow for some reason.<br>Submitted a 15kb file in the Social networks competition and its still pending after 15 minutes.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56936",
      "postDate": "10/28/2014 20:46:24",
      "content": "<p>@Rush: &nbsp;thanks for the confirmation. Mind you, the disappearing leaderboard probably has sth to do with that as well :-)</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56938",
      "postDate": "10/28/2014 20:53:48",
      "content": "<p>Hi Konrad,</p>\n<p>Looks like we're having some other, unrelated problems. Please hang tight and don't resubmit for a while. For reference:&nbsp;https://www.kaggle.com/forums/t/10776/submission-outage</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56939",
      "postDate": "10/28/2014 20:57:19",
      "content": "<p>Joyce,</p>\n<p>Thanks for the update, commencing hang-on-tight mode :-)</p>\n\n<p>K</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56940",
      "postDate": "10/28/2014 21:08:53",
      "content": "<p>[quote=Synthient;56934]</p>\n<p>[quote=joycenv;56931]</p>\n<p>[quote=Synthient;56929]</p>\n<p>Also, please update the Data page to include the <a href=\"http://www.kaggle.com/c/avazu-ctr-prediction/forums/t/10729/welcome-to-avazu-ctr-prediction-contest/56818#post56818\">additional details shared in the forums</a>&nbsp;about the meanings of some columns.</p>\n<p>[/quote]</p>\n<p>The &quot;additional details&quot; are simply column header names, which are now included in the data file itself.</p>\n<p>[/quote]</p>\n<p>...which is different from the Data page which still says &quot;C1-C24: 24 anonymized variables&quot;. It's now C1-4, C20-24: 9 anonymized variables.</p>\n<p>[/quote]</p>\n<p>Hi Synthient, I've made this change on the Data page.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56941",
      "postDate": "10/28/2014 21:26:29",
      "content": "<p>Thanks.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56946",
      "postDate": "10/28/2014 22:14:09",
      "content": "<p>[quote=rcarson;56928]</p>\n<p>It could be due to subsampling.&nbsp;https://www.kaggle.com/c/criteo-display-ad-challenge/forums/t/10047/leader-board-0-44xx-is-the-best/52066#post52066</p>\n<p>[/quote]</p>\n<p>Subsampling of non-click events by a factor 10-100 could explain the unrealistic CTR, thanks for pointing this out. It would be nice it that was clarified by the organizers. It changes the nature of the prediction&nbsp;problem...</p>\n<p>Still, the data doesn't check. I am 90% sure the fields are mislabeled. The field &quot;device_ip&quot; has 8320 unique entries, with the most common having over 3 million impressions and 460k clicks. Meanwhile the field &quot;app_domain&quot; has 6 million unique entries... makes total sense, right? I'm imagining that one guy on his smartphone, visiting 3MM pages across 6MM apps and clicking on ads 460k times. Precious.</p>\n<p>So here are the correct labels:</p>\n<p>&quot;app_domain&quot; is actually &quot;device_ip&quot;</p>\n<p>&quot;app_id&quot; is actually &quot;device_id&quot;</p>\n<p>&quot;device_ip&quot; is probably &quot;app_id&quot;</p>\n<p>&quot;device_ip&quot; is probably&nbsp;&quot;app_domain&quot;</p>\n<p>Other fields are also probably mis-labeled, but it's harder to tell from the data histogram. And there's no telling what other bugs (hash collisions, non random sub-sampling, etc) are lurking in there.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56951",
      "postDate": "10/29/2014 03:29:52",
      "content": "<p>[quote=fchollet;56946]</p>\n<p>[quote=rcarson;56928]</p>\n<p>It could be due to subsampling.&nbsp;https://www.kaggle.com/c/criteo-display-ad-challenge/forums/t/10047/leader-board-0-44xx-is-the-best/52066#post52066</p>\n<p>[/quote]</p>\n<p>Subsampling of non-click events by a factor 10-100 could explain the unrealistic CTR, thanks for pointing this out. It would be nice it that was clarified by the organizers. It changes the nature of the prediction&nbsp;problem...</p>\n<p>Still, the data doesn't check. I am 90% sure the fields are mislabeled. The field &quot;device_ip&quot; has 8320 unique entries, with the most common having over 3 million impressions and 460k clicks. Meanwhile the field &quot;app_domain&quot; has 6 million unique entries... makes total sense, right? I'm imagining that one guy on his smartphone, visiting 3MM pages across 6MM apps and clicking on ads 460k times. Precious.</p>\n<p>So here are the correct labels:</p>\n<p>&quot;app_domain&quot; is actually &quot;device_ip&quot;</p>\n<p>&quot;app_id&quot; is actually &quot;device_id&quot;</p>\n<p>&quot;device_ip&quot; is probably &quot;app_id&quot;</p>\n<p>&quot;device_ip&quot; is probably&nbsp;&quot;app_domain&quot;</p>\n<p>Other fields are also probably mis-labeled, but it's harder to tell from the data histogram. And there's no telling what other bugs (hash collisions, non random sub-sampling, etc) are lurking in there.</p>\n<p>[/quote]</p>\n<p>Hi&nbsp;fchollet</p>\n<p>&nbsp; I have loaded files into mysql, checked the train data and it seems OK</p>\n<p>count(distinct site_id ): 4715<br>count(distinct site_domain ): 7733<br>count(distinct site_category ): 26<br>count(distinct app_id ): 7941<br>count(distinct app_domain ): 433<br>count(distinct app_category ): 38<br>count(distinct device_id ): 2787564<br>count(distinct device_ip ): 6081079<br>count(distinct device_os ): 15<br>count(distinct device_make ): 283<br>count(distinct device_model ): 8320<br>count(distinct device_type ): 4<br>count(distinct device_conn_type ): 4<br>count(distinct device_geo_country ): 232</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56952",
      "postDate": "10/29/2014 04:05:39",
      "content": "<p>Hi Steve,</p>\n<p>It seems we do not have the same data... I have no idea how that could be possible, since I have no visibility into the code that generated the files, but apparently anything is possible.&nbsp;</p>\n<p>I have the following entry counts:</p>\n<p>For train:</p>\n<p style=\"padding-left: 30px\"><code>hour: 240 - ex: 14100822<br>C1: 7 - ex: 1001<br>C2: 7 - ex: 0<br>C3: 4715 - ex: 8dd05c70<br>C4: 7733 - ex: 1928ea2e<br>banner_pos: 26 - ex: e878bf21<br>site_id: 7941 - ex: 0b54af4e<br>site_domain: 433 - ex: dc165517<br>site_category: 38 - ex: e878bf21<br>app_id: 2787564 - ex: 56ac8621<br>app_domain: 6081079 - ex: 1a62fb8f<br>app_category: 15 - ex: 9740a313<br>device_id: 283 - ex: 8f5da45e<br>device_ip: 8320 - ex: 3f8375f9<br>device_os: 4 - ex: 0<br>device_make: 4 - ex: 0<br>device_model: 232 - ex: 7efdfc94<br>device_type: 2592 - ex: 19115<br>device_conn_type: 8 - ex: 320<br>device_geo_country: 9 - ex: 480<br>C20: 457 - ex: 2048<br>C21: 4 - ex: 0<br>C22: 61 - ex: 1449<br>C23: 171 - ex: -1<br>C24: 53 - ex: 91<br>--<br>total lines: 47686351<br>total clicks: 8228679</code></p>\n<p>For test:</p>\n<p style=\"padding-left: 30px\"><code>hour: 24 - ex: 14101120<br>C1: 7 - ex: 1001<br>C2: 7 - ex: 0<br>C3: 2919 - ex: 8dd05c70<br>C4: 3681 - ex: 80568324<br>banner_pos: 21 - ex: bc1596e9<br>site_id: 2904 - ex: 3ad8fcfa<br>site_domain: 139 - ex: f90bd603<br>site_category: 22 - ex: 050fd349<br>app_id: 435864 - ex: fa5e1ef1<br>app_domain: 978837 - ex: ac4acb06<br>app_category: 10 - ex: 5ed26317<br>device_id: 246 - ex: af7e730c<br>device_ip: 5530 - ex: 257e8866<br>device_os: 5 - ex: 0<br>device_make: 4 - ex: 0<br>device_model: 227 - ex: 2c38b9e4<br>device_type: 1480 - ex: 10923<br>device_conn_type: 8 - ex: 320<br>device_geo_country: 9 - ex: 480<br>C20: 294 - ex: 2049<br>C21: 4 - ex: 0<br>C22: 39 - ex: 427<br>C23: 163 - ex: -1<br>C24: 31 - ex: 91<br>--<br>total lines: 4769401</code></p>\n<p>The headers in the files I downloaded have the following order (same for train and test):</p>\n<p><code>'hour', 'C1', 'C2', 'C3', 'C4', 'banner_pos', 'site_id', 'site_domain', 'site_category', 'app_id', 'app_domain', 'app_category', 'device_id', 'device_ip', 'device_os', 'device_make', 'device_model', 'device_type', 'device_conn_type', 'device_geo_country', 'C20', 'C21', 'C22', 'C23', 'C24'</code></p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56953",
      "postDate": "10/29/2014 04:15:43",
      "content": "<p>Hi fchollet,</p>\n<p>I've just learned that I've had a miscommunication with the sponsor so the headers on the data files are incorrect. I am in the process of correcting the error, but these are large files. Also, I want to confirm there are no other changes that need to be addressed since I do not want to have to again re-release the data set. Thanks for your careful eye, and for your patience as we get this sorted out.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56955",
      "postDate": "10/29/2014 04:38:16",
      "content": "<p>I have uploaded files for the correct training set and&nbsp;test set header rows. Please use this to identify the columns appropriately.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56956",
      "postDate": "10/29/2014 04:50:47",
      "content": "<p>[quote=fchollet;56926]</p>\n<p>Are you sure there aren't a few bugs left in your data export scripts and elsewhere? Have you run appropriate tests and sanity checks?&nbsp;</p>\n<p>Besides the temporal aberration that now seems to be corrected, the data looks nothing like what I'm used to in the industry. Mobile CTRs between 10 to 25%, really? In practice you'll never see anything above 1%, and that's the best case (generally involving fraud and dark patterns in ad placement), industry average is more like 0.1%.</p>\n<p>I'm having a hard time believing this data is legit.</p>\n<p>[/quote]</p>\n<p>yes we did subsampling and the ctr for train data is about&nbsp;0.1778</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56957",
      "postDate": "10/29/2014 05:10:38",
      "content": "<p>Hi all,</p>\n<p>still downloading the data.. but can no longer wait for:</p>\n<p>Are all id of ad in the training set included in the test set ?</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56958",
      "postDate": "10/29/2014 05:13:55",
      "content": "<p>[quote=joycenv;56955]</p>\n<p>I have uploaded files for the correct training set and&nbsp;test set header rows. Please use this to identify the columns appropriately.</p>\n<p>[/quote]</p>\n<p>Ok, mislabeling issue solved. We can officially start the contest. Thank you!</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56975",
      "postDate": "10/29/2014 11:52:34",
      "content": "<p>Joyce,</p>\n<p>Two more questions:</p>\n<p>1. What is the difference between test_rev1 and test_rev2?</p>\n<p>2. the proper train set = {train_rev1 + train_header}, test = {test_rev1 + test_header}?<br><br></p>\n\n<p>thanks,</p>\n<p>K</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56978",
      "postDate": "10/29/2014 13:14:42",
      "content": "<p>1. rev_2 includes the correct header. The header row is the only difference between _rev1 and _rev2.</p>\n<p>2. Yes. _rev1 files need the updated header row.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56979",
      "postDate": "10/29/2014 13:15:52",
      "content": "<p>FWIW: if anybody needs to replace the headers with the new ones, here's a fairly quick (if not particularly elegant :-) way to do it:</p>\n<p><code></code><code>wc -l ./data/test_rev1.csv</code></p>\n<p><code>tail -4769401 ./data/test_rev1.csv &gt; ./data/temp.csv</code></p>\n<p><code>cat ./data/test_header.csv ./data/temp.csv &gt; ./data/test_v2.csv</code></p>\n\n<p>EDIT: this approach takes forever for the train set, so try&nbsp;</p>\n<p><code>cat ./data/train_rev1.csv | tail -n+2 &gt; ./data/temp.csv</code></p>\n<p>instead</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "56980",
      "postDate": "10/29/2014 13:16:48",
      "content": "<p>Thank you, Joyce.</p>\n\n<p>K</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "58013",
      "postDate": "11/13/2014 17:33:51",
      "content": "<p>hello, can i know why i can't see &quot;make submission&quot; in my sidebar?</p>\n<p>really weird!!</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "58015",
      "postDate": "11/13/2014 17:53:16",
      "content": "<p>[quote=optimizer;58014]</p>\n<p>[quote=noooooo;58013]</p>\n<p>hello, can i know why i can't see &quot;make submission&quot; in my sidebar?</p>\n<p>really weird!!</p>\n<p>[/quote]</p>\n<p>it's on hold.</p>\n<p>http://www.kaggle.com/c/avazu-ctr-prediction/forums/t/10887/competition-put-on-hold/57606#post57606</p>\n<p>[/quote]</p>\n<p>thanks...i search for the button for 15mins already....</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "58031",
      "postDate": "11/14/2014 00:12:31",
      "content": "<p>Oh, someone just bumped this thread to the top, the competition is still on hold. I was so confused.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "58033",
      "postDate": "11/14/2014 00:23:46",
      "content": "<p>Hey mods, can we delete or lock this thread? It's confusing new people, and I'm tired of seeing it pop up in my inbox and getting all excited about nothing.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "58034",
      "postDate": "11/14/2014 00:24:08",
      "content": "<p>[quote=James King;58031]</p>\n<p>Uh, am I supposed to see data on the data page? I still see &quot;Data downloads are temporarily disabled. &quot;</p>\n<p>[/quote]</p>\n\n<p>Competition is still on hold (read related post on the forum). &nbsp;</p>\n<p>If this was not Kaggle, I would think this post has been trolled.&nbsp;This thread&nbsp;is an old restart of the competition.&nbsp;</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "58035",
      "postDate": "11/14/2014 00:26:26",
      "content": "<p>This post should NOT be pinned on top of the forum.</p>\n<p>It's really misleading.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "58037",
      "postDate": "11/14/2014 00:29:06",
      "content": "<p>[quote=pi_informatics;58033]</p>\n<p>Hey mods, can we delete or lock this thread? It's confusing new people, and I'm tired of seeing it pop up in my inbox and getting all excited about nothing.</p>\n<p>[/quote]</p>\n<p>LOL . . . I was just about to cancel date night.</p>",
      "rawMarkdown": "",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 56926,
      "author_name": "fchollet",
      "author_url": "",
      "post_date": "10/28/2014 19:42:07",
      "content": "<p>Are you sure there aren't a few bugs left in your data export scripts and elsewhere? Have you run appropriate tests and sanity checks?&nbsp;</p>\n<p>Besides the temporal aberration that now seems to be corrected, the data looks nothing like what I'm used to in the industry. Mobile CTRs between 10 to 25%, really? In practice you'll never see anything above 1%, and that's the best case (generally involving fraud and dark patterns in ad placement), industry average is more like 0.1%.</p>\n<p>I'm having a hard time believing this data is legit.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56928,
      "author_name": "jiweiliu",
      "author_url": "",
      "post_date": "10/28/2014 19:57:40",
      "content": "<p>It could be due to subsampling.&nbsp;https://www.kaggle.com/c/criteo-display-ad-challenge/forums/t/10047/leader-board-0-44xx-is-the-best/52066#post52066</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56929,
      "author_name": "brundage",
      "author_url": "",
      "post_date": "10/28/2014 20:10:32",
      "content": "<p>Also, please update the Data page to include the <a href=\"http://www.kaggle.com/c/avazu-ctr-prediction/forums/t/10729/welcome-to-avazu-ctr-prediction-contest/56818#post56818\">additional details shared in the forums</a>&nbsp;about the meanings of some columns.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56930,
      "author_name": "jiweiliu",
      "author_url": "",
      "post_date": "10/28/2014 20:15:49",
      "content": "<p>Seems there is other mess to be cleaned up. When I enter our team's name, It says &quot;team name is already in use.&quot; Apparently the system confuses with our team's old record before all this. And my submission has been evaluated for half an hour and it is still pending.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56931,
      "author_name": "joycenv",
      "author_url": "",
      "post_date": "10/28/2014 20:33:20",
      "content": "<p>[quote=Synthient;56929]</p>\n<p>Also, please update the Data page to include the <a href=\"http://www.kaggle.com/c/avazu-ctr-prediction/forums/t/10729/welcome-to-avazu-ctr-prediction-contest/56818#post56818\">additional details shared in the forums</a>&nbsp;about the meanings of some columns.</p>\n<p>[/quote]</p>\n<p>The &quot;additional details&quot; are simply column header names, which are now included in the data file itself.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56933,
      "author_name": "konradb",
      "author_url": "",
      "post_date": "10/28/2014 20:40:17",
      "content": "<p>Joyce,</p>\n<p>are submissions working? mine seems to be pending for &gt;20mins now (and the uncompressed file is not that big)...</p>\n<p>thanks,</p>\n<p>K</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56934,
      "author_name": "brundage",
      "author_url": "",
      "post_date": "10/28/2014 20:42:08",
      "content": "<p>[quote=joycenv;56931]</p>\n<p>[quote=Synthient;56929]</p>\n<p>Also, please update the Data page to include the <a href=\"http://www.kaggle.com/c/avazu-ctr-prediction/forums/t/10729/welcome-to-avazu-ctr-prediction-contest/56818#post56818\">additional details shared in the forums</a>&nbsp;about the meanings of some columns.</p>\n<p>[/quote]</p>\n<p>The &quot;additional details&quot; are simply column header names, which are now included in the data file itself.</p>\n<p>[/quote]</p>\n\n<p>...which is different from the Data page which still says &quot;C1-C24: 24 anonymized variables&quot;. It's now C1-4, C20-24: 9 anonymized variables.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56935,
      "author_name": "rishis",
      "author_url": "",
      "post_date": "10/28/2014 20:44:45",
      "content": "<p>Submissions issue seems to be there in all competitions, scoring engine is slow for some reason.<br>Submitted a 15kb file in the Social networks competition and its still pending after 15 minutes.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56936,
      "author_name": "konradb",
      "author_url": "",
      "post_date": "10/28/2014 20:46:24",
      "content": "<p>@Rush: &nbsp;thanks for the confirmation. Mind you, the disappearing leaderboard probably has sth to do with that as well :-)</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56938,
      "author_name": "joycenv",
      "author_url": "",
      "post_date": "10/28/2014 20:53:48",
      "content": "<p>Hi Konrad,</p>\n<p>Looks like we're having some other, unrelated problems. Please hang tight and don't resubmit for a while. For reference:&nbsp;https://www.kaggle.com/forums/t/10776/submission-outage</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56939,
      "author_name": "konradb",
      "author_url": "",
      "post_date": "10/28/2014 20:57:19",
      "content": "<p>Joyce,</p>\n<p>Thanks for the update, commencing hang-on-tight mode :-)</p>\n\n<p>K</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56940,
      "author_name": "joycenv",
      "author_url": "",
      "post_date": "10/28/2014 21:08:53",
      "content": "<p>[quote=Synthient;56934]</p>\n<p>[quote=joycenv;56931]</p>\n<p>[quote=Synthient;56929]</p>\n<p>Also, please update the Data page to include the <a href=\"http://www.kaggle.com/c/avazu-ctr-prediction/forums/t/10729/welcome-to-avazu-ctr-prediction-contest/56818#post56818\">additional details shared in the forums</a>&nbsp;about the meanings of some columns.</p>\n<p>[/quote]</p>\n<p>The &quot;additional details&quot; are simply column header names, which are now included in the data file itself.</p>\n<p>[/quote]</p>\n<p>...which is different from the Data page which still says &quot;C1-C24: 24 anonymized variables&quot;. It's now C1-4, C20-24: 9 anonymized variables.</p>\n<p>[/quote]</p>\n<p>Hi Synthient, I've made this change on the Data page.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56941,
      "author_name": "brundage",
      "author_url": "",
      "post_date": "10/28/2014 21:26:29",
      "content": "<p>Thanks.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56946,
      "author_name": "fchollet",
      "author_url": "",
      "post_date": "10/28/2014 22:14:09",
      "content": "<p>[quote=rcarson;56928]</p>\n<p>It could be due to subsampling.&nbsp;https://www.kaggle.com/c/criteo-display-ad-challenge/forums/t/10047/leader-board-0-44xx-is-the-best/52066#post52066</p>\n<p>[/quote]</p>\n<p>Subsampling of non-click events by a factor 10-100 could explain the unrealistic CTR, thanks for pointing this out. It would be nice it that was clarified by the organizers. It changes the nature of the prediction&nbsp;problem...</p>\n<p>Still, the data doesn't check. I am 90% sure the fields are mislabeled. The field &quot;device_ip&quot; has 8320 unique entries, with the most common having over 3 million impressions and 460k clicks. Meanwhile the field &quot;app_domain&quot; has 6 million unique entries... makes total sense, right? I'm imagining that one guy on his smartphone, visiting 3MM pages across 6MM apps and clicking on ads 460k times. Precious.</p>\n<p>So here are the correct labels:</p>\n<p>&quot;app_domain&quot; is actually &quot;device_ip&quot;</p>\n<p>&quot;app_id&quot; is actually &quot;device_id&quot;</p>\n<p>&quot;device_ip&quot; is probably &quot;app_id&quot;</p>\n<p>&quot;device_ip&quot; is probably&nbsp;&quot;app_domain&quot;</p>\n<p>Other fields are also probably mis-labeled, but it's harder to tell from the data histogram. And there's no telling what other bugs (hash collisions, non random sub-sampling, etc) are lurking in there.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56951,
      "author_name": "stevewang0",
      "author_url": "",
      "post_date": "10/29/2014 03:29:52",
      "content": "<p>[quote=fchollet;56946]</p>\n<p>[quote=rcarson;56928]</p>\n<p>It could be due to subsampling.&nbsp;https://www.kaggle.com/c/criteo-display-ad-challenge/forums/t/10047/leader-board-0-44xx-is-the-best/52066#post52066</p>\n<p>[/quote]</p>\n<p>Subsampling of non-click events by a factor 10-100 could explain the unrealistic CTR, thanks for pointing this out. It would be nice it that was clarified by the organizers. It changes the nature of the prediction&nbsp;problem...</p>\n<p>Still, the data doesn't check. I am 90% sure the fields are mislabeled. The field &quot;device_ip&quot; has 8320 unique entries, with the most common having over 3 million impressions and 460k clicks. Meanwhile the field &quot;app_domain&quot; has 6 million unique entries... makes total sense, right? I'm imagining that one guy on his smartphone, visiting 3MM pages across 6MM apps and clicking on ads 460k times. Precious.</p>\n<p>So here are the correct labels:</p>\n<p>&quot;app_domain&quot; is actually &quot;device_ip&quot;</p>\n<p>&quot;app_id&quot; is actually &quot;device_id&quot;</p>\n<p>&quot;device_ip&quot; is probably &quot;app_id&quot;</p>\n<p>&quot;device_ip&quot; is probably&nbsp;&quot;app_domain&quot;</p>\n<p>Other fields are also probably mis-labeled, but it's harder to tell from the data histogram. And there's no telling what other bugs (hash collisions, non random sub-sampling, etc) are lurking in there.</p>\n<p>[/quote]</p>\n<p>Hi&nbsp;fchollet</p>\n<p>&nbsp; I have loaded files into mysql, checked the train data and it seems OK</p>\n<p>count(distinct site_id ): 4715<br>count(distinct site_domain ): 7733<br>count(distinct site_category ): 26<br>count(distinct app_id ): 7941<br>count(distinct app_domain ): 433<br>count(distinct app_category ): 38<br>count(distinct device_id ): 2787564<br>count(distinct device_ip ): 6081079<br>count(distinct device_os ): 15<br>count(distinct device_make ): 283<br>count(distinct device_model ): 8320<br>count(distinct device_type ): 4<br>count(distinct device_conn_type ): 4<br>count(distinct device_geo_country ): 232</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56952,
      "author_name": "fchollet",
      "author_url": "",
      "post_date": "10/29/2014 04:05:39",
      "content": "<p>Hi Steve,</p>\n<p>It seems we do not have the same data... I have no idea how that could be possible, since I have no visibility into the code that generated the files, but apparently anything is possible.&nbsp;</p>\n<p>I have the following entry counts:</p>\n<p>For train:</p>\n<p style=\"padding-left: 30px\"><code>hour: 240 - ex: 14100822<br>C1: 7 - ex: 1001<br>C2: 7 - ex: 0<br>C3: 4715 - ex: 8dd05c70<br>C4: 7733 - ex: 1928ea2e<br>banner_pos: 26 - ex: e878bf21<br>site_id: 7941 - ex: 0b54af4e<br>site_domain: 433 - ex: dc165517<br>site_category: 38 - ex: e878bf21<br>app_id: 2787564 - ex: 56ac8621<br>app_domain: 6081079 - ex: 1a62fb8f<br>app_category: 15 - ex: 9740a313<br>device_id: 283 - ex: 8f5da45e<br>device_ip: 8320 - ex: 3f8375f9<br>device_os: 4 - ex: 0<br>device_make: 4 - ex: 0<br>device_model: 232 - ex: 7efdfc94<br>device_type: 2592 - ex: 19115<br>device_conn_type: 8 - ex: 320<br>device_geo_country: 9 - ex: 480<br>C20: 457 - ex: 2048<br>C21: 4 - ex: 0<br>C22: 61 - ex: 1449<br>C23: 171 - ex: -1<br>C24: 53 - ex: 91<br>--<br>total lines: 47686351<br>total clicks: 8228679</code></p>\n<p>For test:</p>\n<p style=\"padding-left: 30px\"><code>hour: 24 - ex: 14101120<br>C1: 7 - ex: 1001<br>C2: 7 - ex: 0<br>C3: 2919 - ex: 8dd05c70<br>C4: 3681 - ex: 80568324<br>banner_pos: 21 - ex: bc1596e9<br>site_id: 2904 - ex: 3ad8fcfa<br>site_domain: 139 - ex: f90bd603<br>site_category: 22 - ex: 050fd349<br>app_id: 435864 - ex: fa5e1ef1<br>app_domain: 978837 - ex: ac4acb06<br>app_category: 10 - ex: 5ed26317<br>device_id: 246 - ex: af7e730c<br>device_ip: 5530 - ex: 257e8866<br>device_os: 5 - ex: 0<br>device_make: 4 - ex: 0<br>device_model: 227 - ex: 2c38b9e4<br>device_type: 1480 - ex: 10923<br>device_conn_type: 8 - ex: 320<br>device_geo_country: 9 - ex: 480<br>C20: 294 - ex: 2049<br>C21: 4 - ex: 0<br>C22: 39 - ex: 427<br>C23: 163 - ex: -1<br>C24: 31 - ex: 91<br>--<br>total lines: 4769401</code></p>\n<p>The headers in the files I downloaded have the following order (same for train and test):</p>\n<p><code>'hour', 'C1', 'C2', 'C3', 'C4', 'banner_pos', 'site_id', 'site_domain', 'site_category', 'app_id', 'app_domain', 'app_category', 'device_id', 'device_ip', 'device_os', 'device_make', 'device_model', 'device_type', 'device_conn_type', 'device_geo_country', 'C20', 'C21', 'C22', 'C23', 'C24'</code></p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56953,
      "author_name": "joycenv",
      "author_url": "",
      "post_date": "10/29/2014 04:15:43",
      "content": "<p>Hi fchollet,</p>\n<p>I've just learned that I've had a miscommunication with the sponsor so the headers on the data files are incorrect. I am in the process of correcting the error, but these are large files. Also, I want to confirm there are no other changes that need to be addressed since I do not want to have to again re-release the data set. Thanks for your careful eye, and for your patience as we get this sorted out.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56955,
      "author_name": "joycenv",
      "author_url": "",
      "post_date": "10/29/2014 04:38:16",
      "content": "<p>I have uploaded files for the correct training set and&nbsp;test set header rows. Please use this to identify the columns appropriately.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56956,
      "author_name": "stevewang0",
      "author_url": "",
      "post_date": "10/29/2014 04:50:47",
      "content": "<p>[quote=fchollet;56926]</p>\n<p>Are you sure there aren't a few bugs left in your data export scripts and elsewhere? Have you run appropriate tests and sanity checks?&nbsp;</p>\n<p>Besides the temporal aberration that now seems to be corrected, the data looks nothing like what I'm used to in the industry. Mobile CTRs between 10 to 25%, really? In practice you'll never see anything above 1%, and that's the best case (generally involving fraud and dark patterns in ad placement), industry average is more like 0.1%.</p>\n<p>I'm having a hard time believing this data is legit.</p>\n<p>[/quote]</p>\n<p>yes we did subsampling and the ctr for train data is about&nbsp;0.1778</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56957,
      "author_name": "herimanitra",
      "author_url": "",
      "post_date": "10/29/2014 05:10:38",
      "content": "<p>Hi all,</p>\n<p>still downloading the data.. but can no longer wait for:</p>\n<p>Are all id of ad in the training set included in the test set ?</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56958,
      "author_name": "jiweiliu",
      "author_url": "",
      "post_date": "10/29/2014 05:13:55",
      "content": "<p>[quote=joycenv;56955]</p>\n<p>I have uploaded files for the correct training set and&nbsp;test set header rows. Please use this to identify the columns appropriately.</p>\n<p>[/quote]</p>\n<p>Ok, mislabeling issue solved. We can officially start the contest. Thank you!</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56975,
      "author_name": "konradb",
      "author_url": "",
      "post_date": "10/29/2014 11:52:34",
      "content": "<p>Joyce,</p>\n<p>Two more questions:</p>\n<p>1. What is the difference between test_rev1 and test_rev2?</p>\n<p>2. the proper train set = {train_rev1 + train_header}, test = {test_rev1 + test_header}?<br><br></p>\n\n<p>thanks,</p>\n<p>K</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56978,
      "author_name": "joycenv",
      "author_url": "",
      "post_date": "10/29/2014 13:14:42",
      "content": "<p>1. rev_2 includes the correct header. The header row is the only difference between _rev1 and _rev2.</p>\n<p>2. Yes. _rev1 files need the updated header row.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56979,
      "author_name": "konradb",
      "author_url": "",
      "post_date": "10/29/2014 13:15:52",
      "content": "<p>FWIW: if anybody needs to replace the headers with the new ones, here's a fairly quick (if not particularly elegant :-) way to do it:</p>\n<p><code></code><code>wc -l ./data/test_rev1.csv</code></p>\n<p><code>tail -4769401 ./data/test_rev1.csv &gt; ./data/temp.csv</code></p>\n<p><code>cat ./data/test_header.csv ./data/temp.csv &gt; ./data/test_v2.csv</code></p>\n\n<p>EDIT: this approach takes forever for the train set, so try&nbsp;</p>\n<p><code>cat ./data/train_rev1.csv | tail -n+2 &gt; ./data/temp.csv</code></p>\n<p>instead</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 56980,
      "author_name": "konradb",
      "author_url": "",
      "post_date": "10/29/2014 13:16:48",
      "content": "<p>Thank you, Joyce.</p>\n\n<p>K</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 58013,
      "author_name": "betterplace",
      "author_url": "",
      "post_date": "11/13/2014 17:33:51",
      "content": "<p>hello, can i know why i can't see &quot;make submission&quot; in my sidebar?</p>\n<p>really weird!!</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 58015,
      "author_name": "betterplace",
      "author_url": "",
      "post_date": "11/13/2014 17:53:16",
      "content": "<p>[quote=optimizer;58014]</p>\n<p>[quote=noooooo;58013]</p>\n<p>hello, can i know why i can't see &quot;make submission&quot; in my sidebar?</p>\n<p>really weird!!</p>\n<p>[/quote]</p>\n<p>it's on hold.</p>\n<p>http://www.kaggle.com/c/avazu-ctr-prediction/forums/t/10887/competition-put-on-hold/57606#post57606</p>\n<p>[/quote]</p>\n<p>thanks...i search for the button for 15mins already....</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 58031,
      "author_name": "jfkingiii",
      "author_url": "",
      "post_date": "11/14/2014 00:12:31",
      "content": "<p>Oh, someone just bumped this thread to the top, the competition is still on hold. I was so confused.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 58033,
      "author_name": "piinformatics",
      "author_url": "",
      "post_date": "11/14/2014 00:23:46",
      "content": "<p>Hey mods, can we delete or lock this thread? It's confusing new people, and I'm tired of seeing it pop up in my inbox and getting all excited about nothing.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 58034,
      "author_name": "fernandoconstantino",
      "author_url": "",
      "post_date": "11/14/2014 00:24:08",
      "content": "<p>[quote=James King;58031]</p>\n<p>Uh, am I supposed to see data on the data page? I still see &quot;Data downloads are temporarily disabled. &quot;</p>\n<p>[/quote]</p>\n\n<p>Competition is still on hold (read related post on the forum). &nbsp;</p>\n<p>If this was not Kaggle, I would think this post has been trolled.&nbsp;This thread&nbsp;is an old restart of the competition.&nbsp;</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 58035,
      "author_name": "fernandoconstantino",
      "author_url": "",
      "post_date": "11/14/2014 00:26:26",
      "content": "<p>This post should NOT be pinned on top of the forum.</p>\n<p>It's really misleading.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 58037,
      "author_name": "inversion",
      "author_url": "",
      "post_date": "11/14/2014 00:29:06",
      "content": "<p>[quote=pi_informatics;58033]</p>\n<p>Hey mods, can we delete or lock this thread? It's confusing new people, and I'm tired of seeing it pop up in my inbox and getting all excited about nothing.</p>\n<p>[/quote]</p>\n<p>LOL . . . I was just about to cancel date night.</p>",
      "votes": null,
      "replies": []
    }
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