{
  "id": 3620,
  "title": "Large rows where scheduled gate arrival < scheduled runway arrival",
  "url": "/competitions/flight/discussion/3620",
  "author_name": "",
  "post_date": "2013-01-17T20:42:29.183Z",
  "votes": null,
  "comment_count": 2,
  "views": 2481,
  "content": "<pre>&gt; dim (master_score_flights_combined[master_score_flights_combined$scheduled_gate_arrival &lt; master_score_flights_combined$scheduled_runway_arrival,])<br>[1] 4845   85<br>&gt; dim (master_score_flights_combined)<br>[1] 26459    85</pre>\r\n<pre>&nbsp;</pre>\r\n<pre>4845 rows out of 26459 public leaderboard rows have flights scheduled to arrive at gate before runway. What are we supposed to do in such cases?</pre>\r\n<pre>How can flight be scheduled to arrive at gate before runway?</pre>",
  "messages": [
    {
      "id": "19410",
      "postDate": "01/17/2013 20:42:29",
      "content": "<pre>&gt; dim (master_score_flights_combined[master_score_flights_combined$scheduled_gate_arrival &lt; master_score_flights_combined$scheduled_runway_arrival,])<br>[1] 4845   85<br>&gt; dim (master_score_flights_combined)<br>[1] 26459    85</pre>\r\n<pre>&nbsp;</pre>\r\n<pre>4845 rows out of 26459 public leaderboard rows have flights scheduled to arrive at gate before runway. What are we supposed to do in such cases?</pre>\r\n<pre>How can flight be scheduled to arrive at gate before runway?</pre>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "19422",
      "postDate": "01/18/2013 00:37:35",
      "content": "<p>[quote=Black Magic;19410]</p>\r\n<pre>&gt; dim (master_score_flights_combined[master_score_flights_combined$scheduled_gate_arrival &lt; master_score_flights_combined$scheduled_runway_arrival,])<br>[1] 4845   85<br>&gt; dim (master_score_flights_combined)<br>[1] 26459    85</pre>\r\n<pre>&nbsp;</pre>\r\n<pre>4845 rows out of 26459 public leaderboard rows have flights scheduled to arrive at gate before runway. What are we supposed to do in such cases?</pre>\r\n<pre>How can flight be scheduled to arrive at gate before runway?</pre>\r\n<p>[/quote]Thanks for pointing this out.&nbsp;I've added this issue to a<a href=\"https://www.gequest.com/wiki/FlightQuest.DataModificationsToCheck\">&nbsp;wiki page on data quality issues to check</a>. I'm going to look into it more, but likely my response will be &quot;your\r\n models should be able to make predictions in light of this.&quot;</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "19600",
      "postDate": "01/22/2013 19:53:09",
      "content": "<p>ok, the models work in the light of this but this is a genuine quality issue</p>",
      "rawMarkdown": "",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 19422,
      "author_name": "benhamner",
      "author_url": "",
      "post_date": "01/18/2013 00:37:35",
      "content": "<p>[quote=Black Magic;19410]</p>\r\n<pre>&gt; dim (master_score_flights_combined[master_score_flights_combined$scheduled_gate_arrival &lt; master_score_flights_combined$scheduled_runway_arrival,])<br>[1] 4845   85<br>&gt; dim (master_score_flights_combined)<br>[1] 26459    85</pre>\r\n<pre>&nbsp;</pre>\r\n<pre>4845 rows out of 26459 public leaderboard rows have flights scheduled to arrive at gate before runway. What are we supposed to do in such cases?</pre>\r\n<pre>How can flight be scheduled to arrive at gate before runway?</pre>\r\n<p>[/quote]Thanks for pointing this out.&nbsp;I've added this issue to a<a href=\"https://www.gequest.com/wiki/FlightQuest.DataModificationsToCheck\">&nbsp;wiki page on data quality issues to check</a>. I'm going to look into it more, but likely my response will be &quot;your\r\n models should be able to make predictions in light of this.&quot;</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 19600,
      "author_name": "rkirana",
      "author_url": "",
      "post_date": "01/22/2013 19:53:09",
      "content": "<p>ok, the models work in the light of this but this is a genuine quality issue</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "19410": "",
    "19422": "",
    "19600": ""
  },
  "source": "meta"
}