{
  "id": 446306,
  "title": "0.44-0.46 mystery",
  "url": "/competitions/rsna-2023-abdominal-trauma-detection/discussion/446306",
  "author_name": "Gunes Evitan",
  "post_date": "2023-10-11T05:37:42.774000",
  "votes": 6,
  "comment_count": 11,
  "views": 0,
  "content": "<p>Some folks climbed so fast to that range and then made marginal improvements. I can still improve my CV score to 0.38x but it doesn't translate to LB score anymore. What could be the reason?</p>",
  "messages": [
    {
      "id": 2477104,
      "postDate": "2023-10-11T05:37:42.773Z",
      "content": "<p>Some folks climbed so fast to that range and then made marginal improvements. I can still improve my CV score to 0.38x but it doesn't translate to LB score anymore. What could be the reason?</p>",
      "rawMarkdown": "Some folks climbed so fast to that range and then made marginal improvements. I can still improve my CV score to 0.38x but it doesn't translate to LB score anymore. What could be the reason?",
      "votes": 6
    },
    {
      "id": 2477597,
      "postDate": "2023-10-11T12:28:46.937Z",
      "content": "<p>Let's welcome shake up.</p>",
      "rawMarkdown": "Let's welcome shake up.",
      "votes": 4,
      "replies": [
        {
          "id": 2478668,
          "postDate": "2023-10-12T06:27:27.917Z",
          "content": "<p>I think it will be on a small scale. CV/LB was correlated so far but there are so many teams stuck between 0.44 and 0.46 so all of them have chance for gold medal.</p>",
          "rawMarkdown": "I think it will be on a small scale. CV/LB was correlated so far but there are so many teams stuck between 0.44 and 0.46 so all of them have chance for gold medal."
        }
      ]
    },
    {
      "id": 2477412,
      "postDate": "2023-10-11T08:52:26.423Z",
      "content": "<p>external data, my guess.</p>",
      "rawMarkdown": "external data, my guess.",
      "replies": [
        {
          "id": 2477520,
          "postDate": "2023-10-11T10:52:26.017Z",
          "content": "<p>I am not using any external data</p>",
          "rawMarkdown": "I am not using any external data",
          "votes": 1,
          "replies": [
            {
              "id": 2479904,
              "postDate": "2023-10-13T01:47:39.970Z",
              "content": "<p>congrats!  insight study. </p>\n<p>new algorithm or multiple fusion?</p>",
              "rawMarkdown": "congrats!  insight study. \n\nnew algorithm or multiple fusion?"
            }
          ]
        },
        {
          "id": 2477529,
          "postDate": "2023-10-11T11:02:05.213Z",
          "content": "<p>I don't think there is external data for this problem. You can do indomain pretraining with similar datasets but it probably doesn't worth it.</p>",
          "rawMarkdown": "I don't think there is external data for this problem. You can do indomain pretraining with similar datasets but it probably doesn't worth it.",
          "replies": [
            {
              "id": 2477640,
              "postDate": "2023-10-11T13:11:52.490Z",
              "content": "<p>what about the dataset used to train the TotalSegmentator? <a href=\"https://zenodo.org/record/8367088\" target=\"_blank\">https://zenodo.org/record/8367088</a> maybe useful for the segmenation step?</p>",
              "rawMarkdown": "what about the dataset used to train the TotalSegmentator? https://zenodo.org/record/8367088 maybe useful for the segmenation step?"
            },
            {
              "id": 2477657,
              "postDate": "2023-10-11T13:24:30.423Z",
              "content": "<p>I would be amazed if someone pulled off an effective pretraining on a 3D dataset like this for classification.</p>",
              "rawMarkdown": "I would be amazed if someone pulled off an effective pretraining on a 3D dataset like this for classification."
            }
          ]
        }
      ]
    },
    {
      "id": 2477807,
      "postDate": "2023-10-11T15:18:11.343Z",
      "rawMarkdown": "",
      "votes": 1,
      "isDeleted": true,
      "replies": [
        {
          "id": 2477811,
          "postDate": "2023-10-11T15:20:53.623Z",
          "content": "<p>He is medical imaging competitions legend, probably improving scores locally throughout the competition :) </p>",
          "rawMarkdown": "He is medical imaging competitions legend, probably improving scores locally throughout the competition :) ",
          "votes": 2,
          "replies": [
            {
              "id": 2478537,
              "postDate": "2023-10-12T04:36:13.533Z",
              "content": "<p>Indeed - see his helpful post <a href=\"https://www.kaggle.com/competitions/rsna-2023-abdominal-trauma-detection/discussion/441402\" target=\"_blank\">Active Extravasation Bounding Boxes</a><br>\nThink domain knowledge and ability to do effective data preprocessing and filtering for best training outcomes helps. </p>",
              "rawMarkdown": "Indeed - see his helpful post [Active Extravasation Bounding Boxes](https://www.kaggle.com/competitions/rsna-2023-abdominal-trauma-detection/discussion/441402)\nThink domain knowledge and ability to do effective data preprocessing and filtering for best training outcomes helps. ",
              "votes": 1
            }
          ]
        }
      ]
    }
  ],
  "comments": [
    {
      "id": 2477597,
      "author_name": "sheep",
      "author_url": "",
      "post_date": "2023-10-11T12:28:46.937000",
      "content": "<p>Let's welcome shake up.</p>",
      "votes": 4,
      "replies": [
        {
          "id": 2478668,
          "author_name": "Gunes Evitan",
          "author_url": "",
          "post_date": "2023-10-12T06:27:27.917000",
          "content": "<p>I think it will be on a small scale. CV/LB was correlated so far but there are so many teams stuck between 0.44 and 0.46 so all of them have chance for gold medal.</p>",
          "votes": 0,
          "replies": []
        }
      ]
    },
    {
      "id": 2477412,
      "author_name": "dragon zhang",
      "author_url": "",
      "post_date": "2023-10-11T08:52:26.423000",
      "content": "<p>external data, my guess.</p>",
      "votes": 0,
      "replies": [
        {
          "id": 2477520,
          "author_name": "Theo Viel",
          "author_url": "",
          "post_date": "2023-10-11T10:52:26.017000",
          "content": "<p>I am not using any external data</p>",
          "votes": 1,
          "replies": [
            {
              "id": 2479904,
              "author_name": "dragon zhang",
              "author_url": "",
              "post_date": "2023-10-13T01:47:39.970000",
              "content": "<p>congrats!  insight study. </p>\n<p>new algorithm or multiple fusion?</p>",
              "votes": 0,
              "replies": []
            }
          ]
        },
        {
          "id": 2477529,
          "author_name": "Gunes Evitan",
          "author_url": "",
          "post_date": "2023-10-11T11:02:05.213000",
          "content": "<p>I don't think there is external data for this problem. You can do indomain pretraining with similar datasets but it probably doesn't worth it.</p>",
          "votes": 0,
          "replies": [
            {
              "id": 2477640,
              "author_name": "Johnny Hyland",
              "author_url": "",
              "post_date": "2023-10-11T13:11:52.490000",
              "content": "<p>what about the dataset used to train the TotalSegmentator? <a href=\"https://zenodo.org/record/8367088\" target=\"_blank\">https://zenodo.org/record/8367088</a> maybe useful for the segmenation step?</p>",
              "votes": 0,
              "replies": []
            },
            {
              "id": 2477657,
              "author_name": "Gunes Evitan",
              "author_url": "",
              "post_date": "2023-10-11T13:24:30.423000",
              "content": "<p>I would be amazed if someone pulled off an effective pretraining on a 3D dataset like this for classification.</p>",
              "votes": 0,
              "replies": []
            }
          ]
        }
      ]
    },
    {
      "id": 2477807,
      "author_name": "",
      "author_url": "",
      "post_date": "2023-10-11T15:18:11.343000",
      "content": "",
      "votes": 1,
      "replies": [
        {
          "id": 2477811,
          "author_name": "Nischay Dhankhar",
          "author_url": "",
          "post_date": "2023-10-11T15:20:53.623000",
          "content": "<p>He is medical imaging competitions legend, probably improving scores locally throughout the competition :) </p>",
          "votes": 2,
          "replies": [
            {
              "id": 2478537,
              "author_name": "something4kag",
              "author_url": "",
              "post_date": "2023-10-12T04:36:13.533000",
              "content": "<p>Indeed - see his helpful post <a href=\"https://www.kaggle.com/competitions/rsna-2023-abdominal-trauma-detection/discussion/441402\" target=\"_blank\">Active Extravasation Bounding Boxes</a><br>\nThink domain knowledge and ability to do effective data preprocessing and filtering for best training outcomes helps. </p>",
              "votes": 1,
              "replies": []
            }
          ]
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "2477104": "Some folks climbed so fast to that range and then made marginal improvements. I can still improve my CV score to 0.38x but it doesn't translate to LB score anymore. What could be the reason?",
    "2477597": "Let's welcome shake up.",
    "2477412": "external data, my guess.",
    "2477807": ""
  }
}