{
  "id": 37092,
  "title": "Similar car models in train and test datasets",
  "url": "/competitions/carvana-image-masking-challenge/discussion/37092",
  "author_name": "",
  "post_date": "2017-07-26T23:30:40.446248900Z",
  "votes": 9,
  "comment_count": 5,
  "views": 0,
  "content": "<p>Even if the 'trim' can completely <a href=\"https://www.kaggle.com/c/carvana-image-masking-challenge/discussion/37048\">change the look of a car</a> in other cases cars appear similar for a non-specialist. \nHere is some examples when similar (<strong>non the same</strong>) car models (with the same year, make, model, trim1) appear in train and test datasets: </p>\n\n<p><img src=\"https://www.kaggle.io/svf/1379485/c73af09a46a2289535e714ba6fc716f5/__results___files/__results___54_0.png\" alt=\"example1\" title=\"\">\n<img src=\"https://www.kaggle.io/svf/1379485/c73af09a46a2289535e714ba6fc716f5/__results___files/__results___54_1.png\" alt=\"example2\" title=\"\">\n<img src=\"https://www.kaggle.io/svf/1379485/c73af09a46a2289535e714ba6fc716f5/__results___files/__results___54_7.png\" alt=\"example3\" title=\"\">\n<img src=\"https://www.kaggle.io/svf/1379485/c73af09a46a2289535e714ba6fc716f5/__results___files/__results___54_4.png\" alt=\"example4\" title=\"\">\n<img src=\"https://www.kaggle.io/svf/1379485/c73af09a46a2289535e714ba6fc716f5/__results___files/__results___54_8.png\" alt=\"example5\" title=\"\">\netc</p>\n\n<p>Totally, 179 cases found.</p>\n\n<p>See <a href=\"https://www.kaggle.com/vfdev5/data-visualization/\">this kernel</a> for details.</p>\n\n<p>HTH</p>",
  "messages": [
    {
      "id": "207588",
      "postDate": "07/26/2017 23:30:40",
      "content": "<p>Even if the 'trim' can completely <a href=\"https://www.kaggle.com/c/carvana-image-masking-challenge/discussion/37048\">change the look of a car</a> in other cases cars appear similar for a non-specialist. \nHere is some examples when similar (<strong>non the same</strong>) car models (with the same year, make, model, trim1) appear in train and test datasets: </p>\n\n<p><img src=\"https://www.kaggle.io/svf/1379485/c73af09a46a2289535e714ba6fc716f5/__results___files/__results___54_0.png\" alt=\"example1\" title=\"\">\n<img src=\"https://www.kaggle.io/svf/1379485/c73af09a46a2289535e714ba6fc716f5/__results___files/__results___54_1.png\" alt=\"example2\" title=\"\">\n<img src=\"https://www.kaggle.io/svf/1379485/c73af09a46a2289535e714ba6fc716f5/__results___files/__results___54_7.png\" alt=\"example3\" title=\"\">\n<img src=\"https://www.kaggle.io/svf/1379485/c73af09a46a2289535e714ba6fc716f5/__results___files/__results___54_4.png\" alt=\"example4\" title=\"\">\n<img src=\"https://www.kaggle.io/svf/1379485/c73af09a46a2289535e714ba6fc716f5/__results___files/__results___54_8.png\" alt=\"example5\" title=\"\">\netc</p>\n\n<p>Totally, 179 cases found.</p>\n\n<p>See <a href=\"https://www.kaggle.com/vfdev5/data-visualization/\">this kernel</a> for details.</p>\n\n<p>HTH</p>",
      "rawMarkdown": "Even if the 'trim' can completely [change the look of a car](https://www.kaggle.com/c/carvana-image-masking-challenge/discussion/37048) in other cases cars appear similar for a non-specialist. \nHere is some examples when similar (**non the same**) car models (with the same year, make, model, trim1) appear in train and test datasets: \n\n![example1][1]\n![example2][2]\n![example3][3]\n![example4][4]\n![example5][5]\netc\n\nTotally, 179 cases found.\n\nSee [this kernel](https://www.kaggle.com/vfdev5/data-visualization/) for details.\n \nHTH\n\n  [1]: https://www.kaggle.io/svf/1379485/c73af09a46a2289535e714ba6fc716f5/__results___files/__results___54_0.png\n [2]: https://www.kaggle.io/svf/1379485/c73af09a46a2289535e714ba6fc716f5/__results___files/__results___54_1.png\n [3]: https://www.kaggle.io/svf/1379485/c73af09a46a2289535e714ba6fc716f5/__results___files/__results___54_7.png\n [4]: https://www.kaggle.io/svf/1379485/c73af09a46a2289535e714ba6fc716f5/__results___files/__results___54_4.png\n [5]: https://www.kaggle.io/svf/1379485/c73af09a46a2289535e714ba6fc716f5/__results___files/__results___54_8.png",
      "votes": null
    },
    {
      "id": "207600",
      "postDate": "07/27/2017 00:08:36",
      "content": "<p>This also helps illustrate the subtle differences between the photo studios. Carvana currently uses 3 different physical locations to photograph vehicles, and I think the white balance &amp; exposure have been tuned over time.</p>",
      "rawMarkdown": "This also helps illustrate the subtle differences between the photo studios. Carvana currently uses 3 different physical locations to photograph vehicles, and I think the white balance &amp; exposure have been tuned over time.",
      "votes": null
    },
    {
      "id": "207604",
      "postDate": "07/27/2017 00:23:49",
      "content": "<p>Nice plot, just give it a more in-depth look at the Ranger, being a different trim, you know it will be larger because of the extended cabin.</p>",
      "rawMarkdown": "Nice plot, just give it a more in-depth look at the Ranger, being a different trim, you know it will be larger because of the extended cabin.",
      "votes": null
    },
    {
      "id": "207607",
      "postDate": "07/27/2017 01:13:48",
      "content": "<p>In the plot, it looks like they are both labeled \"XL\" for trim2. That is surprising to me.</p>",
      "rawMarkdown": "In the plot, it looks like they are both labeled \"XL\" for trim2. That is surprising to me.",
      "votes": null
    },
    {
      "id": "207676",
      "postDate": "07/27/2017 06:50:37",
      "content": "<p>Updated masks and images. Sure that masks do not perfectly match. </p>",
      "rawMarkdown": "Updated masks and images. Sure that masks do not perfectly match.",
      "votes": null
    },
    {
      "id": "207771",
      "postDate": "07/27/2017 11:55:19",
      "content": "<p>I nearly had a heart attack, thinking you had overlaid each vehicle's own mask over its source image and the mask was misaligned.</p>\n\n<p>Aside from the Ranger, it seems like most of them would fit pretty well if the mask was translated and scaled.</p>",
      "rawMarkdown": "I nearly had a heart attack, thinking you had overlaid each vehicle's own mask over its source image and the mask was misaligned.\n\nAside from the Ranger, it seems like most of them would fit pretty well if the mask was translated and scaled.",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 207600,
      "author_name": "brianshaler",
      "author_url": "",
      "post_date": "07/27/2017 00:08:36",
      "content": "<p>This also helps illustrate the subtle differences between the photo studios. Carvana currently uses 3 different physical locations to photograph vehicles, and I think the white balance &amp; exposure have been tuned over time.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 207604,
      "author_name": "carloshuertas",
      "author_url": "",
      "post_date": "07/27/2017 00:23:49",
      "content": "<p>Nice plot, just give it a more in-depth look at the Ranger, being a different trim, you know it will be larger because of the extended cabin.</p>",
      "votes": null,
      "replies": [
        {
          "id": 207607,
          "author_name": "brianshaler",
          "author_url": "",
          "post_date": "07/27/2017 01:13:48",
          "content": "<p>In the plot, it looks like they are both labeled \"XL\" for trim2. That is surprising to me.</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 207676,
          "author_name": "vfdev5",
          "author_url": "",
          "post_date": "07/27/2017 06:50:37",
          "content": "<p>Updated masks and images. Sure that masks do not perfectly match. </p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 207771,
          "author_name": "brianshaler",
          "author_url": "",
          "post_date": "07/27/2017 11:55:19",
          "content": "<p>I nearly had a heart attack, thinking you had overlaid each vehicle's own mask over its source image and the mask was misaligned.</p>\n\n<p>Aside from the Ranger, it seems like most of them would fit pretty well if the mask was translated and scaled.</p>",
          "votes": null,
          "replies": []
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "207588": "Even if the 'trim' can completely [change the look of a car](https://www.kaggle.com/c/carvana-image-masking-challenge/discussion/37048) in other cases cars appear similar for a non-specialist. \nHere is some examples when similar (**non the same**) car models (with the same year, make, model, trim1) appear in train and test datasets: \n\n![example1][1]\n![example2][2]\n![example3][3]\n![example4][4]\n![example5][5]\netc\n\nTotally, 179 cases found.\n\nSee [this kernel](https://www.kaggle.com/vfdev5/data-visualization/) for details.\n \nHTH\n\n  [1]: https://www.kaggle.io/svf/1379485/c73af09a46a2289535e714ba6fc716f5/__results___files/__results___54_0.png\n [2]: https://www.kaggle.io/svf/1379485/c73af09a46a2289535e714ba6fc716f5/__results___files/__results___54_1.png\n [3]: https://www.kaggle.io/svf/1379485/c73af09a46a2289535e714ba6fc716f5/__results___files/__results___54_7.png\n [4]: https://www.kaggle.io/svf/1379485/c73af09a46a2289535e714ba6fc716f5/__results___files/__results___54_4.png\n [5]: https://www.kaggle.io/svf/1379485/c73af09a46a2289535e714ba6fc716f5/__results___files/__results___54_8.png",
    "207600": "This also helps illustrate the subtle differences between the photo studios. Carvana currently uses 3 different physical locations to photograph vehicles, and I think the white balance &amp; exposure have been tuned over time.",
    "207604": "Nice plot, just give it a more in-depth look at the Ranger, being a different trim, you know it will be larger because of the extended cabin.",
    "207607": "In the plot, it looks like they are both labeled \"XL\" for trim2. That is surprising to me.",
    "207676": "Updated masks and images. Sure that masks do not perfectly match.",
    "207771": "I nearly had a heart attack, thinking you had overlaid each vehicle's own mask over its source image and the mask was misaligned.\n\nAside from the Ranger, it seems like most of them would fit pretty well if the mask was translated and scaled."
  },
  "source": "meta"
}