{
  "id": 14232,
  "title": "Minimal time unit 52631578.95?",
  "url": "/competitions/facebook-recruiting-iv-human-or-bot/discussion/14232",
  "author_name": "",
  "post_date": "2015-05-15T13:00:29.763Z",
  "votes": 2,
  "comment_count": 4,
  "views": 1730,
  "content": "<p>I calculated the duration of each auction(the time from first bid to last bid in an auction), and I found that many of them are multiples of&nbsp;<strong>52631578.95</strong>.</p>\n<p>Can we consider this minimal unit as <strong>SECOND</strong>?</p>\n<p>Here are some durations, divided by 52631578.95:</p>\n<p>10.00000001<br>36.99999998<br>39.00000002<br>40<br>46.00000001<br>1155<br>26275<br>1442743<br>1405507<br>1392406<br>1324157<br>1010467<br>1033195<br>259063<br>259064<br>259067<br>259069<br>259126<br>259130<br>259135<br><strong>259138</strong><br><strong>259139</strong><br>258111<br>256146<br>251396<br>199488<br>194661<br>184255</p>",
  "messages": [
    {
      "id": "78488",
      "postDate": "05/15/2015 13:00:29",
      "content": "<p>I calculated the duration of each auction(the time from first bid to last bid in an auction), and I found that many of them are multiples of&nbsp;<strong>52631578.95</strong>.</p>\n<p>Can we consider this minimal unit as <strong>SECOND</strong>?</p>\n<p>Here are some durations, divided by 52631578.95:</p>\n<p>10.00000001<br>36.99999998<br>39.00000002<br>40<br>46.00000001<br>1155<br>26275<br>1442743<br>1405507<br>1392406<br>1324157<br>1010467<br>1033195<br>259063<br>259064<br>259067<br>259069<br>259126<br>259130<br>259135<br><strong>259138</strong><br><strong>259139</strong><br>258111<br>256146<br>251396<br>199488<br>194661<br>184255</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "78531",
      "postDate": "05/15/2015 18:32:12",
      "content": "<p>Do you need this accuracy?</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "78799",
      "postDate": "05/17/2015 18:55:48",
      "content": "<p>What I would like to know is the &quot;real&quot; timestamp of the first bid, at least I would like to know the day of the week, hour, minute, timezone.</p>\n<p>Is it possible to have this information?</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "78848",
      "postDate": "05/18/2015 03:00:29",
      "content": "<p>[quote=OlivierS;78799]</p>\n<p>What I would like to know is the &quot;real&quot; timestamp of the first bid, at least I would like to know the day of the week, hour, minute, timezone.</p>\n<p>Is it possible to have this information?</p>\n<p>[/quote]</p>\n\n<p>For hour and minute, my answer is yes:</p>\n<p>Make a plot with&nbsp;jitter type of bid time and they are clearly separated into three clusters. I would consider each cluster as a daily open time for auction. &nbsp;</p>\n\n<p>Attached file is the bid time of <strong>robots</strong>.</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "79715",
      "postDate": "05/22/2015 04:07:13",
      "content": "<p>[quote=YcdoiT;78488]</p>\n<p>I calculated the duration of each auction(the time from first bid to last bid in an auction), and I found that many of them are multiples of&nbsp;<strong>52631578.95</strong>.</p>\n<p>Can we consider this minimal unit as <strong>SECOND</strong>?</p>\n<p>Here are some durations, divided by 52631578.95:</p>\n<p>10.00000001<br>36.99999998<br>39.00000002<br>40<br>46.00000001<br>1155<br>26275<br>1442743<br>1405507<br>1392406<br>1324157<br>1010467<br>1033195<br>259063<br>259064<br>259067<br>259069<br>259126<br>259130<br>259135<br><strong>259138</strong><br><strong>259139</strong><br>258111<br>256146<br>251396<br>199488<br>194661<br>184255</p>\n<p>[/quote]</p>\n\n<p>The time step is&nbsp;&nbsp; 18 steps of time 52631580, and then 1 step of 52631570.&nbsp;&nbsp;&nbsp; Every 19 rows has a time step of exactly 1e9 time units</p>\n\n<p>If you assume that every step is 1 second, then the difference between the minimum time and the maximum time is almost exactly 31 days</p>\n\n<p>You can normalize time by subtracting the minimum time from the current time, dividing by 1e9, multiplying by 19 and rounding to the nearest whole number</p>",
      "rawMarkdown": "",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 78531,
      "author_name": "mpekalski",
      "author_url": "",
      "post_date": "05/15/2015 18:32:12",
      "content": "<p>Do you need this accuracy?</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 78799,
      "author_name": "oliviers",
      "author_url": "",
      "post_date": "05/17/2015 18:55:48",
      "content": "<p>What I would like to know is the &quot;real&quot; timestamp of the first bid, at least I would like to know the day of the week, hour, minute, timezone.</p>\n<p>Is it possible to have this information?</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 78848,
      "author_name": "lijunjie",
      "author_url": "",
      "post_date": "05/18/2015 03:00:29",
      "content": "<p>[quote=OlivierS;78799]</p>\n<p>What I would like to know is the &quot;real&quot; timestamp of the first bid, at least I would like to know the day of the week, hour, minute, timezone.</p>\n<p>Is it possible to have this information?</p>\n<p>[/quote]</p>\n\n<p>For hour and minute, my answer is yes:</p>\n<p>Make a plot with&nbsp;jitter type of bid time and they are clearly separated into three clusters. I would consider each cluster as a daily open time for auction. &nbsp;</p>\n\n<p>Attached file is the bid time of <strong>robots</strong>.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 79715,
      "author_name": "scottdh",
      "author_url": "",
      "post_date": "05/22/2015 04:07:13",
      "content": "<p>[quote=YcdoiT;78488]</p>\n<p>I calculated the duration of each auction(the time from first bid to last bid in an auction), and I found that many of them are multiples of&nbsp;<strong>52631578.95</strong>.</p>\n<p>Can we consider this minimal unit as <strong>SECOND</strong>?</p>\n<p>Here are some durations, divided by 52631578.95:</p>\n<p>10.00000001<br>36.99999998<br>39.00000002<br>40<br>46.00000001<br>1155<br>26275<br>1442743<br>1405507<br>1392406<br>1324157<br>1010467<br>1033195<br>259063<br>259064<br>259067<br>259069<br>259126<br>259130<br>259135<br><strong>259138</strong><br><strong>259139</strong><br>258111<br>256146<br>251396<br>199488<br>194661<br>184255</p>\n<p>[/quote]</p>\n\n<p>The time step is&nbsp;&nbsp; 18 steps of time 52631580, and then 1 step of 52631570.&nbsp;&nbsp;&nbsp; Every 19 rows has a time step of exactly 1e9 time units</p>\n\n<p>If you assume that every step is 1 second, then the difference between the minimum time and the maximum time is almost exactly 31 days</p>\n\n<p>You can normalize time by subtracting the minimum time from the current time, dividing by 1e9, multiplying by 19 and rounding to the nearest whole number</p>",
      "votes": null,
      "replies": []
    }
  ],
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}