{
  "id": 163733,
  "title": "Got same prediction value for each image in test data?",
  "url": "/competitions/siim-isic-melanoma-classification/discussion/163733",
  "author_name": "Mr_Novice",
  "post_date": "2020-07-03T08:39:29.141000",
  "votes": 1,
  "comment_count": 8,
  "views": 0,
  "content": "<p>Hello,\nI'm newbie to datascience,I have got the same prediction value for each image in my test data..\nwhat should be the reason? I have tried many models but in final prediction, got the same value for each image. Is anybody facing the same problem?</p>",
  "messages": [
    {
      "id": 913489,
      "postDate": "2020-07-03T08:39:29.143Z",
      "content": "<p>Hello,\nI'm newbie to datascience,I have got the same prediction value for each image in my test data..\nwhat should be the reason? I have tried many models but in final prediction, got the same value for each image. Is anybody facing the same problem?</p>",
      "rawMarkdown": "Hello,\nI'm newbie to datascience,I have got the same prediction value for each image in my test data..\nwhat should be the reason? I have tried many models but in final prediction, got the same value for each image. Is anybody facing the same problem?",
      "votes": 1
    },
    {
      "id": 913643,
      "postDate": "2020-07-03T10:31:55.547Z",
      "content": "<p>I got these error. But I need to see your code or just a put a link to your notebook here</p>",
      "rawMarkdown": "I got these error. But I need to see your code or just a put a link to your notebook here",
      "replies": [
        {
          "id": 914736,
          "postDate": "2020-07-04T07:29:46.470Z",
          "rawMarkdown": "",
          "isDeleted": true
        },
        {
          "id": 914742,
          "postDate": "2020-07-04T07:36:16.180Z",
          "content": "<p>Here is my kernel link:\n<a href=\"https://www.kaggle.com/anuragkushwah/kernel15cd6cce67\">https://www.kaggle.com/anuragkushwah/kernel15cd6cce67</a></p>\n\n<p>Each test image got the same prediction value. Also the validtion accuracy is also same for every epoch.</p>",
          "rawMarkdown": "Here is my kernel link:\nhttps://www.kaggle.com/anuragkushwah/kernel15cd6cce67\n\nEach test image got the same prediction value. Also the validtion accuracy is also same for every epoch."
        },
        {
          "id": 915042,
          "postDate": "2020-07-04T12:46:04.820Z",
          "content": "<p>404 error</p>",
          "rawMarkdown": "404 error"
        },
        {
          "id": 915066,
          "postDate": "2020-07-04T13:01:30.810Z",
          "content": "<p><a href=\"/anuragkushwah\">@anuragkushwah</a> Your <a href=\"https://www.kaggle.com/anuragkushwah/kernel15cd6cce67\">kernel</a> is Private. You need to make it Public.</p>",
          "rawMarkdown": "@anuragkushwah Your [kernel](https://www.kaggle.com/anuragkushwah/kernel15cd6cce67) is Private. You need to make it Public."
        },
        {
          "id": 915251,
          "postDate": "2020-07-04T15:29:37.510Z",
          "content": "<p>Sorry guys! <a href=\"/msharuk589\">@msharuk589</a>  <a href=\"/sirishks\">@sirishks</a>  plzz check it now.</p>",
          "rawMarkdown": "Sorry guys! @msharuk589  @sirishks  plzz check it now."
        }
      ]
    },
    {
      "id": 913636,
      "postDate": "2020-07-03T10:24:33.407Z",
      "content": "<p>Hello, \nwithout piece of your code - hard to tell.\nIn particular in this competition, there is a lot of data with imbalances (approx 1.76% of total images have target = 1). Hence you can train a model that will only predict target = 0 (no melanoma) with a pretty high accuracy, but auc (competiton metric) will be about 0.5. </p>",
      "rawMarkdown": "Hello, \nwithout piece of your code - hard to tell.\nIn particular in this competition, there is a lot of data with imbalances (approx 1.76% of total images have target = 1). Hence you can train a model that will only predict target = 0 (no melanoma) with a pretty high accuracy, but auc (competiton metric) will be about 0.5. "
    },
    {
      "id": 913535,
      "postDate": "2020-07-03T09:09:17.940Z",
      "content": "<p>Are you using a <a href=\"https://www.kaggle.com/c/siim-isic-melanoma-classification/notebooks?sortBy=voteCount&amp;group=everyone&amp;pageSize=20&amp;competitionId=20270\">public kernel</a>? If not, start with one of those notebooks which already works correctly end-to-end.</p>\n\n<p>Also, you are expected to provide a link to your kernel so that others can provide feedback.</p>\n\n<p>PS: Perhaps questions such as these should be posted in the official Topic <a href=\"https://www.kaggle.com/c/siim-isic-melanoma-classification/discussion/154297\">New to Machine Learning or Kaggle?</a></p>",
      "rawMarkdown": "Are you using a [public kernel](https://www.kaggle.com/c/siim-isic-melanoma-classification/notebooks?sortBy=voteCount&amp;group=everyone&amp;pageSize=20&amp;competitionId=20270)? If not, start with one of those notebooks which already works correctly end-to-end.\n\nAlso, you are expected to provide a link to your kernel so that others can provide feedback.\n\nPS: Perhaps questions such as these should be posted in the official Topic [New to Machine Learning or Kaggle?](https://www.kaggle.com/c/siim-isic-melanoma-classification/discussion/154297)"
    }
  ],
  "comments": [
    {
      "id": 913643,
      "author_name": "MhdSharuk",
      "author_url": "",
      "post_date": "2020-07-03T10:31:55.547000",
      "content": "<p>I got these error. But I need to see your code or just a put a link to your notebook here</p>",
      "votes": 0,
      "replies": [
        {
          "id": 914736,
          "author_name": "",
          "author_url": "",
          "post_date": "2020-07-04T07:29:46.470000",
          "content": "",
          "votes": 0,
          "replies": []
        },
        {
          "id": 914742,
          "author_name": "Mr_Novice",
          "author_url": "",
          "post_date": "2020-07-04T07:36:16.180000",
          "content": "<p>Here is my kernel link:\n<a href=\"https://www.kaggle.com/anuragkushwah/kernel15cd6cce67\">https://www.kaggle.com/anuragkushwah/kernel15cd6cce67</a></p>\n\n<p>Each test image got the same prediction value. Also the validtion accuracy is also same for every epoch.</p>",
          "votes": 0,
          "replies": []
        },
        {
          "id": 915042,
          "author_name": "MhdSharuk",
          "author_url": "",
          "post_date": "2020-07-04T12:46:04.820000",
          "content": "<p>404 error</p>",
          "votes": 0,
          "replies": []
        },
        {
          "id": 915066,
          "author_name": "Sirish Somanchi",
          "author_url": "",
          "post_date": "2020-07-04T13:01:30.810000",
          "content": "<p><a href=\"/anuragkushwah\">@anuragkushwah</a> Your <a href=\"https://www.kaggle.com/anuragkushwah/kernel15cd6cce67\">kernel</a> is Private. You need to make it Public.</p>",
          "votes": 0,
          "replies": []
        },
        {
          "id": 915251,
          "author_name": "Mr_Novice",
          "author_url": "",
          "post_date": "2020-07-04T15:29:37.510000",
          "content": "<p>Sorry guys! <a href=\"/msharuk589\">@msharuk589</a>  <a href=\"/sirishks\">@sirishks</a>  plzz check it now.</p>",
          "votes": 0,
          "replies": []
        }
      ]
    },
    {
      "id": 913636,
      "author_name": "Wojtek Rosa",
      "author_url": "",
      "post_date": "2020-07-03T10:24:33.407000",
      "content": "<p>Hello, \nwithout piece of your code - hard to tell.\nIn particular in this competition, there is a lot of data with imbalances (approx 1.76% of total images have target = 1). Hence you can train a model that will only predict target = 0 (no melanoma) with a pretty high accuracy, but auc (competiton metric) will be about 0.5. </p>",
      "votes": 0,
      "replies": []
    },
    {
      "id": 913535,
      "author_name": "Sirish Somanchi",
      "author_url": "",
      "post_date": "2020-07-03T09:09:17.940000",
      "content": "<p>Are you using a <a href=\"https://www.kaggle.com/c/siim-isic-melanoma-classification/notebooks?sortBy=voteCount&amp;group=everyone&amp;pageSize=20&amp;competitionId=20270\">public kernel</a>? If not, start with one of those notebooks which already works correctly end-to-end.</p>\n\n<p>Also, you are expected to provide a link to your kernel so that others can provide feedback.</p>\n\n<p>PS: Perhaps questions such as these should be posted in the official Topic <a href=\"https://www.kaggle.com/c/siim-isic-melanoma-classification/discussion/154297\">New to Machine Learning or Kaggle?</a></p>",
      "votes": 0,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "913489": "Hello,\nI'm newbie to datascience,I have got the same prediction value for each image in my test data..\nwhat should be the reason? I have tried many models but in final prediction, got the same value for each image. Is anybody facing the same problem?",
    "913643": "I got these error. But I need to see your code or just a put a link to your notebook here",
    "913636": "Hello, \nwithout piece of your code - hard to tell.\nIn particular in this competition, there is a lot of data with imbalances (approx 1.76% of total images have target = 1). Hence you can train a model that will only predict target = 0 (no melanoma) with a pretty high accuracy, but auc (competiton metric) will be about 0.5. ",
    "913535": "Are you using a [public kernel](https://www.kaggle.com/c/siim-isic-melanoma-classification/notebooks?sortBy=voteCount&amp;group=everyone&amp;pageSize=20&amp;competitionId=20270)? If not, start with one of those notebooks which already works correctly end-to-end.\n\nAlso, you are expected to provide a link to your kernel so that others can provide feedback.\n\nPS: Perhaps questions such as these should be posted in the official Topic [New to Machine Learning or Kaggle?](https://www.kaggle.com/c/siim-isic-melanoma-classification/discussion/154297)"
  }
}