{
  "id": 52179,
  "title": "How is it possible that operating systems with the smallest numbers attribute to most of the sales?",
  "url": "/competitions/talkingdata-adtracking-fraud-detection/discussion/52179",
  "author_name": "",
  "post_date": "2018-03-17T01:47:46.133879Z",
  "votes": 1,
  "comment_count": 3,
  "views": 0,
  "content": "<p>I must be missing something here, how is OS with the smallest count have the highest likelihood of 'is_attributed\"? FYI, I grouped OS with lower than 2K counts as \"Rare\". Any ideas? I would think that operating systems like Android or iOS (hidden behind one of these large encoded categories) will have the highest weight on is_attributed? </p>",
  "messages": [
    {
      "id": "297400",
      "postDate": "03/17/2018 01:47:46",
      "content": "<p>I must be missing something here, how is OS with the smallest count have the highest likelihood of 'is_attributed\"? FYI, I grouped OS with lower than 2K counts as \"Rare\". Any ideas? I would think that operating systems like Android or iOS (hidden behind one of these large encoded categories) will have the highest weight on is_attributed? </p>",
      "rawMarkdown": "I must be missing something here, how is OS with the smallest count have the highest likelihood of 'is_attributed\"? FYI, I grouped OS with lower than 2K counts as \"Rare\". Any ideas? I would think that operating systems like Android or iOS (hidden behind one of these large encoded categories) will have the highest weight on is_attributed?",
      "votes": null
    },
    {
      "id": "299744",
      "postDate": "03/21/2018 03:17:53",
      "content": "<p>The more popular the os, the more bots run from it.  </p>",
      "rawMarkdown": "The more popular the os, the more bots run from it.",
      "votes": null
    },
    {
      "id": "300037",
      "postDate": "03/21/2018 07:58:28",
      "content": "<p>Conversions are rare. Rare events happen on rare OS's :)</p>",
      "rawMarkdown": "Conversions are rare. Rare events happen on rare OS's :)",
      "votes": null
    },
    {
      "id": "300419",
      "postDate": "03/21/2018 15:50:00",
      "content": "<p>If you're talking about the conversion <em>rate</em>, then the instances of rare OSes with app downloads are going to throw the proportions off. </p>\n\n<p>If there's a 1% true chance of a download and only 10 OS observations, then if a download happens to occur, the chance is going to appear as 10%. There may not be enough observations for the true probability to emerge. </p>\n\n<p>It could also be that the rare OS has a unique property that results in higher conversion rates, particularly if a selection effect is involved. </p>",
      "rawMarkdown": "If you're talking about the conversion *rate*, then the instances of rare OSes with app downloads are going to throw the proportions off. \n\nIf there's a 1% true chance of a download and only 10 OS observations, then if a download happens to occur, the chance is going to appear as 10%. There may not be enough observations for the true probability to emerge. \n\nIt could also be that the rare OS has a unique property that results in higher conversion rates, particularly if a selection effect is involved.",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 299744,
      "author_name": "yuliagm",
      "author_url": "",
      "post_date": "03/21/2018 03:17:53",
      "content": "<p>The more popular the os, the more bots run from it.  </p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 300037,
      "author_name": "asparuhhristov",
      "author_url": "",
      "post_date": "03/21/2018 07:58:28",
      "content": "<p>Conversions are rare. Rare events happen on rare OS's :)</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 300419,
      "author_name": "jordanholland",
      "author_url": "",
      "post_date": "03/21/2018 15:50:00",
      "content": "<p>If you're talking about the conversion <em>rate</em>, then the instances of rare OSes with app downloads are going to throw the proportions off. </p>\n\n<p>If there's a 1% true chance of a download and only 10 OS observations, then if a download happens to occur, the chance is going to appear as 10%. There may not be enough observations for the true probability to emerge. </p>\n\n<p>It could also be that the rare OS has a unique property that results in higher conversion rates, particularly if a selection effect is involved. </p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "297400": "I must be missing something here, how is OS with the smallest count have the highest likelihood of 'is_attributed\"? FYI, I grouped OS with lower than 2K counts as \"Rare\". Any ideas? I would think that operating systems like Android or iOS (hidden behind one of these large encoded categories) will have the highest weight on is_attributed?",
    "299744": "The more popular the os, the more bots run from it.",
    "300037": "Conversions are rare. Rare events happen on rare OS's :)",
    "300419": "If you're talking about the conversion *rate*, then the instances of rare OSes with app downloads are going to throw the proportions off. \n\nIf there's a 1% true chance of a download and only 10 OS observations, then if a download happens to occur, the chance is going to appear as 10%. There may not be enough observations for the true probability to emerge. \n\nIt could also be that the rare OS has a unique property that results in higher conversion rates, particularly if a selection effect is involved."
  },
  "source": "meta"
}