{
  "id": 10870,
  "title": "How to understand these variables?",
  "url": "/competitions/avazu-ctr-prediction/discussion/10870",
  "author_name": "",
  "post_date": "2014-11-08T18:02:59.987Z",
  "votes": null,
  "comment_count": 10,
  "views": 3275,
  "content": "<p>Folks,</p>\n\n<p>I cannot understand these variables. Can anyone interpret them?</p>\n<p>For instance, what does app represent? What is the difference between device_id and device_ip? What is the difference between site_id and site_domain?&nbsp;</p>\n<p>Thank you very much!</p>",
  "messages": [
    {
      "id": "57527",
      "postDate": "11/08/2014 18:02:59",
      "content": "<p>Folks,</p>\n\n<p>I cannot understand these variables. Can anyone interpret them?</p>\n<p>For instance, what does app represent? What is the difference between device_id and device_ip? What is the difference between site_id and site_domain?&nbsp;</p>\n<p>Thank you very much!</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "59642",
      "postDate": "12/05/2014 20:45:40",
      "content": "<p>hi,</p>\n<p>please someone answer it.</p>\n<p>thanks</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "59644",
      "postDate": "12/05/2014 21:00:50",
      "content": "<p>We can not be sure. But the way I interpret it:</p>\n<p>Device IP is the IP of the device. Device ID identifies the device. Two different users on a similar device (like an ipad) would have different device IP but the same device ID.</p>\n<p>For site ID it could identify a single site (like Facebook). Two users on the same site, but browsing different (sub)domains, would have a similar site ID, but a different domain ID.</p>\n<p>Do note that a clear knowledge on the feature context could hamper, not help your efforts. IMO better to focus on the predictive value of a feature.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "59682",
      "postDate": "12/06/2014 17:22:31",
      "content": "<p>&#65291;1 for Triskelion. &nbsp;Human intuition is not always a&nbsp;good thing to&nbsp;extract insights. However, without intuition there is no where to start.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "59687",
      "postDate": "12/06/2014 19:08:39",
      "content": "<p>[quote=Triskelion;59644]</p>\n<p>Device IP is the IP of the device. Device ID identifies the device. Two different users on a similar device (like an ipad) would have different device IP but the same device ID.</p>\n<p>[/quote]</p>\n<p>I think two different users(2 persons in family) on a similar device may have same devIP and devID.</p>\n<p>However, one user on one device may have different devIPs. For example devIP=&quot;1.1.1.1&quot; on 3G connection and &nbsp;devIP=&quot;9.9.9.9&quot; on WiFi.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "59740",
      "postDate": "12/07/2014 19:28:35",
      "content": "<p>can anyone explain all attributes?</p>\n<p>what is the difference between app-domain and site-domain in a object?</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "59742",
      "postDate": "12/07/2014 20:14:53",
      "content": "<p>[quote=Amin Karimian;59740]</p>\n<p>what is the difference between app-domain and site-domain in a object?</p>\n<p>[/quote]</p>\n<p>A user either clicks on an ad displayed in an app, or displayed on a site. It's either one or the other. If it was a site, the app values are null. If it was an app, the site values are null.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "59765",
      "postDate": "12/08/2014 07:19:04",
      "content": "<p>avazu is a ad company,it is clear that the site_* &nbsp;attribute is the website which has shown the ad.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "59769",
      "postDate": "12/08/2014 08:26:56",
      "content": "<p>[quote=inversion;59742]</p>\n<p>[quote=Amin Karimian;59740]</p>\n<p>what is the difference between app-domain and site-domain in a object?</p>\n<p>[/quote]</p>\n<p>A user either clicks on an ad displayed in an app, or displayed on a site. It's either one or the other. If it was a site, the app values are null. If it was an app, the site values are null.</p>\n<p>[/quote]</p>\n<p>I thought app_* are the features of the application where an user sees the ad, site_* are the features of site where the ad links to. So it can be both app and site. There is a question: internet browser is considered as an application?</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "59770",
      "postDate": "12/08/2014 08:36:32",
      "content": "<p>in every row, either app_* is null, or site_* is null</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "59968",
      "postDate": "12/10/2014 19:43:33",
      "content": "<p>From the data the following values seem to be the classification for NULL:-</p>\n<p><strong>site_id:&nbsp;</strong>85f751fd</p>\n<p><strong>site_domain:&nbsp;</strong>c4e18dd6</p>\n<p><strong>site_category:&nbsp;</strong>50e219e0</p>\n<p><strong>app_id:&nbsp;</strong>ecad2386</p>\n<p><strong>app_domain:&nbsp;</strong>7801e8d9</p>\n<p><strong>app_cateogry</strong>:&nbsp;07d7df22</p>",
      "rawMarkdown": "",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 59642,
      "author_name": "aminkarimian",
      "author_url": "",
      "post_date": "12/05/2014 20:45:40",
      "content": "<p>hi,</p>\n<p>please someone answer it.</p>\n<p>thanks</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 59644,
      "author_name": "triskelion",
      "author_url": "",
      "post_date": "12/05/2014 21:00:50",
      "content": "<p>We can not be sure. But the way I interpret it:</p>\n<p>Device IP is the IP of the device. Device ID identifies the device. Two different users on a similar device (like an ipad) would have different device IP but the same device ID.</p>\n<p>For site ID it could identify a single site (like Facebook). Two users on the same site, but browsing different (sub)domains, would have a similar site ID, but a different domain ID.</p>\n<p>Do note that a clear knowledge on the feature context could hamper, not help your efforts. IMO better to focus on the predictive value of a feature.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 59682,
      "author_name": "simengy82",
      "author_url": "",
      "post_date": "12/06/2014 17:22:31",
      "content": "<p>&#65291;1 for Triskelion. &nbsp;Human intuition is not always a&nbsp;good thing to&nbsp;extract insights. However, without intuition there is no where to start.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 59687,
      "author_name": "shalnovv",
      "author_url": "",
      "post_date": "12/06/2014 19:08:39",
      "content": "<p>[quote=Triskelion;59644]</p>\n<p>Device IP is the IP of the device. Device ID identifies the device. Two different users on a similar device (like an ipad) would have different device IP but the same device ID.</p>\n<p>[/quote]</p>\n<p>I think two different users(2 persons in family) on a similar device may have same devIP and devID.</p>\n<p>However, one user on one device may have different devIPs. For example devIP=&quot;1.1.1.1&quot; on 3G connection and &nbsp;devIP=&quot;9.9.9.9&quot; on WiFi.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 59740,
      "author_name": "aminkarimian",
      "author_url": "",
      "post_date": "12/07/2014 19:28:35",
      "content": "<p>can anyone explain all attributes?</p>\n<p>what is the difference between app-domain and site-domain in a object?</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 59742,
      "author_name": "inversion",
      "author_url": "",
      "post_date": "12/07/2014 20:14:53",
      "content": "<p>[quote=Amin Karimian;59740]</p>\n<p>what is the difference between app-domain and site-domain in a object?</p>\n<p>[/quote]</p>\n<p>A user either clicks on an ad displayed in an app, or displayed on a site. It's either one or the other. If it was a site, the app values are null. If it was an app, the site values are null.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 59765,
      "author_name": "torresowen1",
      "author_url": "",
      "post_date": "12/08/2014 07:19:04",
      "content": "<p>avazu is a ad company,it is clear that the site_* &nbsp;attribute is the website which has shown the ad.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 59769,
      "author_name": "efimov",
      "author_url": "",
      "post_date": "12/08/2014 08:26:56",
      "content": "<p>[quote=inversion;59742]</p>\n<p>[quote=Amin Karimian;59740]</p>\n<p>what is the difference between app-domain and site-domain in a object?</p>\n<p>[/quote]</p>\n<p>A user either clicks on an ad displayed in an app, or displayed on a site. It's either one or the other. If it was a site, the app values are null. If it was an app, the site values are null.</p>\n<p>[/quote]</p>\n<p>I thought app_* are the features of the application where an user sees the ad, site_* are the features of site where the ad links to. So it can be both app and site. There is a question: internet browser is considered as an application?</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 59770,
      "author_name": "vvarkey",
      "author_url": "",
      "post_date": "12/08/2014 08:36:32",
      "content": "<p>in every row, either app_* is null, or site_* is null</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 59968,
      "author_name": "perrysteward",
      "author_url": "",
      "post_date": "12/10/2014 19:43:33",
      "content": "<p>From the data the following values seem to be the classification for NULL:-</p>\n<p><strong>site_id:&nbsp;</strong>85f751fd</p>\n<p><strong>site_domain:&nbsp;</strong>c4e18dd6</p>\n<p><strong>site_category:&nbsp;</strong>50e219e0</p>\n<p><strong>app_id:&nbsp;</strong>ecad2386</p>\n<p><strong>app_domain:&nbsp;</strong>7801e8d9</p>\n<p><strong>app_cateogry</strong>:&nbsp;07d7df22</p>",
      "votes": null,
      "replies": []
    }
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