{
  "id": 20057,
  "title": "Something wrong with Category 3 / Outside Seating?",
  "url": "/competitions/yelp-restaurant-photo-classification/discussion/20057",
  "author_name": "",
  "post_date": "2016-04-11T05:49:36.677Z",
  "votes": 2,
  "comment_count": 3,
  "views": 633,
  "content": "<p>For most labels, I'm able to get decent predictions (~80%).  After training, I expect to see something like this graph where most of the errors happen when the prediction is halfway between the label not existing (0) and existing(1). </p>\n\n<p>See Screen Shot 2016-04-10 at 8.58.31 PM.png</p>\n\n<p>However,  what I end up getting (just for category 3) is that the errors seem to be spread out evenly.  I've tried a few different models to get at it, but they all only get somewhere in the 50% - 60% range. Also outside seating for most restaurants is usually a pretty rare thing, yet it seems to show up around 50% of the time in the training set, which strikes me as odd.</p>\n\n<p>See Screen Shot 2016-04-10 at 8.58.41 PM.png</p>\n\n<p>Anyone have a clue here, or getting much better results?</p>",
  "messages": [
    {
      "id": "114466",
      "postDate": "04/11/2016 05:49:36",
      "content": "<p>For most labels, I'm able to get decent predictions (~80%).  After training, I expect to see something like this graph where most of the errors happen when the prediction is halfway between the label not existing (0) and existing(1). </p>\n\n<p>See Screen Shot 2016-04-10 at 8.58.31 PM.png</p>\n\n<p>However,  what I end up getting (just for category 3) is that the errors seem to be spread out evenly.  I've tried a few different models to get at it, but they all only get somewhere in the 50% - 60% range. Also outside seating for most restaurants is usually a pretty rare thing, yet it seems to show up around 50% of the time in the training set, which strikes me as odd.</p>\n\n<p>See Screen Shot 2016-04-10 at 8.58.41 PM.png</p>\n\n<p>Anyone have a clue here, or getting much better results?</p>",
      "rawMarkdown": "For most labels, I'm able to get decent predictions (~80%).  After training, I expect to see something like this graph where most of the errors happen when the prediction is halfway between the label not existing (0) and existing(1). \r\n\r\nSee Screen Shot 2016-04-10 at 8.58.31 PM.png\r\n\r\nHowever,  what I end up getting (just for category 3) is that the errors seem to be spread out evenly.  I've tried a few different models to get at it, but they all only get somewhere in the 50% - 60% range. Also outside seating for most restaurants is usually a pretty rare thing, yet it seems to show up around 50% of the time in the training set, which strikes me as odd.\r\n\r\nSee Screen Shot 2016-04-10 at 8.58.41 PM.png\r\n\r\nAnyone have a clue here, or getting much better results?",
      "votes": null
    },
    {
      "id": "114678",
      "postDate": "04/12/2016 20:47:30",
      "content": "<p>I have the same problems with this category. My best model gets following scores:</p>\n\n<p>[ 0.77497864  0.85935432 0.89804971  0.73494768  0.83317268  0.9062289\n  0.95272082  0.80270159  0.91307145]</p>",
      "rawMarkdown": "I have the same problems with this category. My best model gets following scores:\r\n \r\n[ 0.77497864  0.85935432 0.89804971  0.73494768  0.83317268  0.9062289\r\n  0.95272082  0.80270159  0.91307145]",
      "votes": null
    },
    {
      "id": "114687",
      "postDate": "04/12/2016 21:35:21",
      "content": "<p>It seems that there are too few outdoor photos. </p>",
      "rawMarkdown": "It seems that there are too few outdoor photos.",
      "votes": null
    },
    {
      "id": "114852",
      "postDate": "04/14/2016 10:25:51",
      "content": "<p>Yes  there was definitely something wrong with the 3rd category , during the competition when i was in the middle of applying MISVM on each label. All labels except the 3rd got around 80 % accuracy , while it was suffering on 56-60 % accuracy. </p>",
      "rawMarkdown": "Yes  there was definitely something wrong with the 3rd category , during the competition when i was in the middle of applying MISVM on each label. All labels except the 3rd got around 80 % accuracy , while it was suffering on 56-60 % accuracy.",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 114678,
      "author_name": "u1234x1234",
      "author_url": "",
      "post_date": "04/12/2016 20:47:30",
      "content": "<p>I have the same problems with this category. My best model gets following scores:</p>\n\n<p>[ 0.77497864  0.85935432 0.89804971  0.73494768  0.83317268  0.9062289\n  0.95272082  0.80270159  0.91307145]</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 114687,
      "author_name": "pinocchio",
      "author_url": "",
      "post_date": "04/12/2016 21:35:21",
      "content": "<p>It seems that there are too few outdoor photos. </p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 114852,
      "author_name": "yardstick17",
      "author_url": "",
      "post_date": "04/14/2016 10:25:51",
      "content": "<p>Yes  there was definitely something wrong with the 3rd category , during the competition when i was in the middle of applying MISVM on each label. All labels except the 3rd got around 80 % accuracy , while it was suffering on 56-60 % accuracy. </p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "114466": "For most labels, I'm able to get decent predictions (~80%).  After training, I expect to see something like this graph where most of the errors happen when the prediction is halfway between the label not existing (0) and existing(1). \r\n\r\nSee Screen Shot 2016-04-10 at 8.58.31 PM.png\r\n\r\nHowever,  what I end up getting (just for category 3) is that the errors seem to be spread out evenly.  I've tried a few different models to get at it, but they all only get somewhere in the 50% - 60% range. Also outside seating for most restaurants is usually a pretty rare thing, yet it seems to show up around 50% of the time in the training set, which strikes me as odd.\r\n\r\nSee Screen Shot 2016-04-10 at 8.58.41 PM.png\r\n\r\nAnyone have a clue here, or getting much better results?",
    "114678": "I have the same problems with this category. My best model gets following scores:\r\n \r\n[ 0.77497864  0.85935432 0.89804971  0.73494768  0.83317268  0.9062289\r\n  0.95272082  0.80270159  0.91307145]",
    "114687": "It seems that there are too few outdoor photos.",
    "114852": "Yes  there was definitely something wrong with the 3rd category , during the competition when i was in the middle of applying MISVM on each label. All labels except the 3rd got around 80 % accuracy , while it was suffering on 56-60 % accuracy."
  },
  "source": "meta"
}