{
  "id": 41639,
  "title": "0.00031? Leak? ",
  "url": "/competitions/kkbox-churn-prediction-challenge/discussion/41639",
  "author_name": "",
  "post_date": "2017-10-21T19:11:39.277127400Z",
  "votes": 15,
  "comment_count": 10,
  "views": 0,
  "content": "",
  "messages": [
    {
      "id": "233914",
      "postDate": "10/21/2017 19:11:39",
      "content": "",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "233944",
      "postDate": "10/21/2017 21:48:26",
      "content": "<p>I haven't looked at the other kkbox competition. Maybe it's a leak using data from there?</p>\n\n<p>It's not fun to see appear on the LB</p>",
      "rawMarkdown": "I haven't looked at the other kkbox competition. Maybe it's a leak using data from there?\n\nIt's not fun to see appear on the LB",
      "votes": null
    },
    {
      "id": "233961",
      "postDate": "10/21/2017 22:44:22",
      "content": "<p>I'm currently active on the other competition, and there is no churn information. Actually is a recommender system, so almost none user information is found. At most, you can user them as external datasources to improve the model, but no churn data whatsoever.</p>",
      "rawMarkdown": "I'm currently active on the other competition, and there is no churn information. Actually is a recommender system, so almost none user information is found. At most, you can user them as external datasources to improve the model, but no churn data whatsoever.",
      "votes": null
    },
    {
      "id": "233962",
      "postDate": "10/21/2017 22:56:23",
      "content": "<p>I see. I thought maybe it was possible to see if users were playing songs past the expiration dates given in this competition's data.. or something similar.</p>\n\n<p>I don't know if the other competition gives the same msno, but I would guess it might be possible to figure this out.</p>",
      "rawMarkdown": "I see. I thought maybe it was possible to see if users were playing songs past the expiration dates given in this competition's data.. or something similar.\n\nI don't know if the other competition gives the same msno, but I would guess it might be possible to figure this out.",
      "votes": null
    },
    {
      "id": "233974",
      "postDate": "10/21/2017 23:52:37",
      "content": "<p>Let me see... if I change all churn predicted to 0.999999... and change no churn predicted to 0.000001,  how much will be the logloss?  Almost zero...  I can believe in a 100% accuracy... but not in almost zero logloss.</p>",
      "rawMarkdown": "Let me see... if I change all churn predicted to 0.999999... and change no churn predicted to 0.000001,  how much will be the logloss?  Almost zero...  I can believe in a 100% accuracy... but not in almost zero logloss.",
      "votes": null
    },
    {
      "id": "234037",
      "postDate": "10/22/2017 04:32:57",
      "content": "<p>Well, now we know why no ranking points were offered :)</p>",
      "rawMarkdown": "Well, now we know why no ranking points were offered :)",
      "votes": null
    },
    {
      "id": "234056",
      "postDate": "10/22/2017 06:28:33",
      "content": "<p>of course, in competitions with ranking points there are no leaks, right? </p>",
      "rawMarkdown": "of course, in competitions with ranking points there are no leaks, right?",
      "votes": null
    },
    {
      "id": "234057",
      "postDate": "10/22/2017 06:34:52",
      "content": "<p>I am a bit lost here, I never mentioned leak as I have no idea what happened but I don't need to.</p>",
      "rawMarkdown": "I am a bit lost here, I never mentioned leak as I have no idea what happened but I don't need to.",
      "votes": null
    },
    {
      "id": "234256",
      "postDate": "10/22/2017 19:10:29",
      "content": "<p>my be coded somewhere in msno - user id</p>",
      "rawMarkdown": "my be coded somewhere in msno - user id",
      "votes": null
    },
    {
      "id": "234260",
      "postDate": "10/22/2017 19:35:34",
      "content": "<p><a href=\"https://youtu.be/G4uDBe28ryQ\">https://youtu.be/G4uDBe28ryQ</a></p>",
      "rawMarkdown": "https://youtu.be/G4uDBe28ryQ",
      "votes": null
    },
    {
      "id": "235541",
      "postDate": "10/25/2017 17:24:21",
      "content": "<p>Hey everyone,</p>\n\n<p>Thanks for the vibrant discussion! We've been monitoring this for the past few days, are aware of it, and are looking into it further. We don't like it when this happens just as much as you do - it's no fun for anyone :).</p>\n\n<p>Stand by!</p>",
      "rawMarkdown": "Hey everyone,\n\nThanks for the vibrant discussion! We've been monitoring this for the past few days, are aware of it, and are looking into it further. We don't like it when this happens just as much as you do - it's no fun for anyone :).\n\nStand by!",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 233944,
      "author_name": "dashiellg",
      "author_url": "",
      "post_date": "10/21/2017 21:48:26",
      "content": "<p>I haven't looked at the other kkbox competition. Maybe it's a leak using data from there?</p>\n\n<p>It's not fun to see appear on the LB</p>",
      "votes": null,
      "replies": [
        {
          "id": 233961,
          "author_name": "juanumusic",
          "author_url": "",
          "post_date": "10/21/2017 22:44:22",
          "content": "<p>I'm currently active on the other competition, and there is no churn information. Actually is a recommender system, so almost none user information is found. At most, you can user them as external datasources to improve the model, but no churn data whatsoever.</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 233962,
          "author_name": "dashiellg",
          "author_url": "",
          "post_date": "10/21/2017 22:56:23",
          "content": "<p>I see. I thought maybe it was possible to see if users were playing songs past the expiration dates given in this competition's data.. or something similar.</p>\n\n<p>I don't know if the other competition gives the same msno, but I would guess it might be possible to figure this out.</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 233974,
          "author_name": "rglopes",
          "author_url": "",
          "post_date": "10/21/2017 23:52:37",
          "content": "<p>Let me see... if I change all churn predicted to 0.999999... and change no churn predicted to 0.000001,  how much will be the logloss?  Almost zero...  I can believe in a 100% accuracy... but not in almost zero logloss.</p>",
          "votes": null,
          "replies": []
        }
      ]
    },
    {
      "id": 234037,
      "author_name": "carloshuertas",
      "author_url": "",
      "post_date": "10/22/2017 04:32:57",
      "content": "<p>Well, now we know why no ranking points were offered :)</p>",
      "votes": null,
      "replies": [
        {
          "id": 234056,
          "author_name": "agrigorev",
          "author_url": "",
          "post_date": "10/22/2017 06:28:33",
          "content": "<p>of course, in competitions with ranking points there are no leaks, right? </p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 234057,
          "author_name": "carloshuertas",
          "author_url": "",
          "post_date": "10/22/2017 06:34:52",
          "content": "<p>I am a bit lost here, I never mentioned leak as I have no idea what happened but I don't need to.</p>",
          "votes": null,
          "replies": []
        }
      ]
    },
    {
      "id": 234256,
      "author_name": "",
      "author_url": "",
      "post_date": "10/22/2017 19:10:29",
      "content": "<p>my be coded somewhere in msno - user id</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 234260,
      "author_name": "juanumusic",
      "author_url": "",
      "post_date": "10/22/2017 19:35:34",
      "content": "<p><a href=\"https://youtu.be/G4uDBe28ryQ\">https://youtu.be/G4uDBe28ryQ</a></p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 235541,
      "author_name": "addisonhoward",
      "author_url": "",
      "post_date": "10/25/2017 17:24:21",
      "content": "<p>Hey everyone,</p>\n\n<p>Thanks for the vibrant discussion! We've been monitoring this for the past few days, are aware of it, and are looking into it further. We don't like it when this happens just as much as you do - it's no fun for anyone :).</p>\n\n<p>Stand by!</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "233914": "",
    "233944": "I haven't looked at the other kkbox competition. Maybe it's a leak using data from there?\n\nIt's not fun to see appear on the LB",
    "233961": "I'm currently active on the other competition, and there is no churn information. Actually is a recommender system, so almost none user information is found. At most, you can user them as external datasources to improve the model, but no churn data whatsoever.",
    "233962": "I see. I thought maybe it was possible to see if users were playing songs past the expiration dates given in this competition's data.. or something similar.\n\nI don't know if the other competition gives the same msno, but I would guess it might be possible to figure this out.",
    "233974": "Let me see... if I change all churn predicted to 0.999999... and change no churn predicted to 0.000001,  how much will be the logloss?  Almost zero...  I can believe in a 100% accuracy... but not in almost zero logloss.",
    "234037": "Well, now we know why no ranking points were offered :)",
    "234056": "of course, in competitions with ranking points there are no leaks, right?",
    "234057": "I am a bit lost here, I never mentioned leak as I have no idea what happened but I don't need to.",
    "234256": "my be coded somewhere in msno - user id",
    "234260": "https://youtu.be/G4uDBe28ryQ",
    "235541": "Hey everyone,\n\nThanks for the vibrant discussion! We've been monitoring this for the past few days, are aware of it, and are looking into it further. We don't like it when this happens just as much as you do - it's no fun for anyone :).\n\nStand by!"
  },
  "source": "meta"
}