{
  "id": 24224,
  "title": "unit of date features?",
  "url": "/competitions/bosch-production-line-performance/discussion/24224",
  "author_name": "",
  "post_date": "2016-10-09T17:55:48.270Z",
  "votes": 2,
  "comment_count": 2,
  "views": 596,
  "content": "<p>Has anybody figured out the unit of measurement for the date features?  I played around with the values a bit, and there seems to be some effects with period length 16.8 units.  The attached image shows a histogram for the distribution of the date feature row-averages, modulo 16.8, and a clear pattern becomes visible.  In the plot, maybe the peaks correspond to workdays and the dip in the middle is Sunday, so that 16.8 time units may be a complete week (and one time unit would be 10 hours).</p>\n\n<p><img src=\"https://storage.googleapis.com/kaggle-forum-message-attachments/138603/5000/Screen Shot 2016-10-09 at 18.49.15.png?sv=2012-02-12&se=2016-10-12T17:55:58Z&sr=b&sp=r&sig=bs3OY8RfofDpFmRcQYJaF38obO8yc6Yf2zUDb7ICSoA%3D\" alt=\"histogram\" title></p>",
  "messages": [
    {
      "id": "138603",
      "postDate": "10/09/2016 17:55:48",
      "content": "<p>Has anybody figured out the unit of measurement for the date features?  I played around with the values a bit, and there seems to be some effects with period length 16.8 units.  The attached image shows a histogram for the distribution of the date feature row-averages, modulo 16.8, and a clear pattern becomes visible.  In the plot, maybe the peaks correspond to workdays and the dip in the middle is Sunday, so that 16.8 time units may be a complete week (and one time unit would be 10 hours).</p>\n\n<p><img src=\"https://storage.googleapis.com/kaggle-forum-message-attachments/138603/5000/Screen Shot 2016-10-09 at 18.49.15.png?sv=2012-02-12&se=2016-10-12T17:55:58Z&sr=b&sp=r&sig=bs3OY8RfofDpFmRcQYJaF38obO8yc6Yf2zUDb7ICSoA%3D\" alt=\"histogram\" title></p>",
      "rawMarkdown": "Has anybody figured out the unit of measurement for the date features?  I played around with the values a bit, and there seems to be some effects with period length 16.8 units.  The attached image shows a histogram for the distribution of the date feature row-averages, modulo 16.8, and a clear pattern becomes visible.  In the plot, maybe the peaks correspond to workdays and the dip in the middle is Sunday, so that 16.8 time units may be a complete week (and one time unit would be 10 hours).\r\n\r\n![histogram][1]\r\n\r\n  [1]: https://kaggle2.blob.core.windows.net/forum-message-attachments/138603/5000/Screen%20Shot%202016-10-09%20at%2018.49.15.png?sv=2012-02-12&se=2016-10-12T17%3A55%3A58Z&sr=b&sp=r&sig=bs3OY8RfofDpFmRcQYJaF38obO8yc6Yf2zUDb7ICSoA%3D",
      "votes": null
    },
    {
      "id": "138605",
      "postDate": "10/09/2016 18:03:20",
      "content": "<p>Think you'll find the answer <a href=\"https://www.kaggle.com/gaborfodor/bosch-production-line-performance/notebookd19d11e4f2\">here</a> and yes 1 = 10 hours, or 0.01 = 6mins.</p>",
      "rawMarkdown": "Think you'll find the answer [here][1] and yes 1 = 10 hours, or 0.01 = 6mins.\r\n\r\n\r\n  [1]: https://www.kaggle.com/gaborfodor/bosch-production-line-performance/notebookd19d11e4f2",
      "votes": null
    },
    {
      "id": "143445",
      "postDate": "11/08/2016 20:44:01",
      "content": "<p>I wonder why they kept that secret/cryptic..</p>",
      "rawMarkdown": "I wonder why they kept that secret/cryptic..",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 138605,
      "author_name": "nigelcarpenter",
      "author_url": "",
      "post_date": "10/09/2016 18:03:20",
      "content": "<p>Think you'll find the answer <a href=\"https://www.kaggle.com/gaborfodor/bosch-production-line-performance/notebookd19d11e4f2\">here</a> and yes 1 = 10 hours, or 0.01 = 6mins.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 143445,
      "author_name": "wacholderbeere",
      "author_url": "",
      "post_date": "11/08/2016 20:44:01",
      "content": "<p>I wonder why they kept that secret/cryptic..</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "138603": "Has anybody figured out the unit of measurement for the date features?  I played around with the values a bit, and there seems to be some effects with period length 16.8 units.  The attached image shows a histogram for the distribution of the date feature row-averages, modulo 16.8, and a clear pattern becomes visible.  In the plot, maybe the peaks correspond to workdays and the dip in the middle is Sunday, so that 16.8 time units may be a complete week (and one time unit would be 10 hours).\r\n\r\n![histogram][1]\r\n\r\n  [1]: https://kaggle2.blob.core.windows.net/forum-message-attachments/138603/5000/Screen%20Shot%202016-10-09%20at%2018.49.15.png?sv=2012-02-12&se=2016-10-12T17%3A55%3A58Z&sr=b&sp=r&sig=bs3OY8RfofDpFmRcQYJaF38obO8yc6Yf2zUDb7ICSoA%3D",
    "138605": "Think you'll find the answer [here][1] and yes 1 = 10 hours, or 0.01 = 6mins.\r\n\r\n\r\n  [1]: https://www.kaggle.com/gaborfodor/bosch-production-line-performance/notebookd19d11e4f2",
    "143445": "I wonder why they kept that secret/cryptic.."
  },
  "source": "meta"
}