{
  "id": 20837,
  "title": "Competition rules doubts",
  "url": "/competitions/draper-satellite-image-chronology/discussion/20837",
  "author_name": "Fernando Gasperi",
  "post_date": "2016-05-10T17:15:48.570000",
  "votes": -2,
  "comment_count": 0,
  "views": 444,
  "content": "<p>The competition rules and evaluation methods aren't clear for me. Could someone help me to answer these questions:</p>\n\n<ol>\n<li><p>The competition rules state: &quot;This Competition is a challenge of skill and the final results are determined solely by leaderboard ranking on the private leaderboard.&quot; How is the private leaderboard ranked? Based on the predictions results of which dataset?</p></li>\n<li><p>This competition allows the use of external data. Which kind of external data? Can anyone provide any concrete examples?</p></li>\n<li><p>The evaluation description state: &quot;Identical predicted values are assigned fractional ranks equal to the average of their positions in the sorted values. These correlations are then averaged to create the score for the leaderboard.&quot; The sentence that confuses me is the one about the identical predicted values? Fractional ranks? Can someone define it more clearly?</p></li>\n</ol>",
  "messages": [
    {
      "id": 119486,
      "postDate": "2016-05-10T17:15:48.570Z",
      "content": "<p>The competition rules and evaluation methods aren't clear for me. Could someone help me to answer these questions:</p>\n\n<ol>\n<li><p>The competition rules state: &quot;This Competition is a challenge of skill and the final results are determined solely by leaderboard ranking on the private leaderboard.&quot; How is the private leaderboard ranked? Based on the predictions results of which dataset?</p></li>\n<li><p>This competition allows the use of external data. Which kind of external data? Can anyone provide any concrete examples?</p></li>\n<li><p>The evaluation description state: &quot;Identical predicted values are assigned fractional ranks equal to the average of their positions in the sorted values. These correlations are then averaged to create the score for the leaderboard.&quot; The sentence that confuses me is the one about the identical predicted values? Fractional ranks? Can someone define it more clearly?</p></li>\n</ol>",
      "rawMarkdown": "The competition rules and evaluation methods aren't clear for me. Could someone help me to answer these questions:\r\n\r\n 1. The competition rules state: \"This Competition is a challenge of skill and the final results are determined solely by leaderboard ranking on the private leaderboard.\" How is the private leaderboard ranked? Based on the predictions results of which dataset?\r\n\r\n 2. This competition allows the use of external data. Which kind of external data? Can anyone provide any concrete examples?\r\n\r\n 3. The evaluation description state: \"Identical predicted values are assigned fractional ranks equal to the average of their positions in the sorted values. These correlations are then averaged to create the score for the leaderboard.\" The sentence that confuses me is the one about the identical predicted values? Fractional ranks? Can someone define it more clearly?\r\n\r\n \r\n",
      "votes": -2
    }
  ],
  "comments": [],
  "raw_markdown_by_id": {
    "119486": "The competition rules and evaluation methods aren't clear for me. Could someone help me to answer these questions:\r\n\r\n 1. The competition rules state: \"This Competition is a challenge of skill and the final results are determined solely by leaderboard ranking on the private leaderboard.\" How is the private leaderboard ranked? Based on the predictions results of which dataset?\r\n\r\n 2. This competition allows the use of external data. Which kind of external data? Can anyone provide any concrete examples?\r\n\r\n 3. The evaluation description state: \"Identical predicted values are assigned fractional ranks equal to the average of their positions in the sorted values. These correlations are then averaged to create the score for the leaderboard.\" The sentence that confuses me is the one about the identical predicted values? Fractional ranks? Can someone define it more clearly?\r\n\r\n \r\n"
  }
}