{
  "id": 603118,
  "title": "CV differing significantly from LB score",
  "url": "/competitions/cmi-detect-behavior-with-sensor-data/discussion/603118",
  "author_name": "",
  "post_date": "2025-08-31T18:24:57.847766Z",
  "votes": null,
  "comment_count": 4,
  "views": 0,
  "content": "<p>I’ve been struggling with a large gap between my cross-validation (CV) and leaderboard (LB) scores. My CV score is around 0.75, but my LB score is stuck at about 0.45. I’ll share the training and inference code below. Could someone please help me figure out what I might be missing?</p>\n<p><a href=\"https://www.kaggle.com/code/elhnan/cmi-competition-submission\" target=\"_blank\">Inference notebook</a></p>",
  "messages": [
    {
      "id": "3279393",
      "postDate": "08/31/2025 18:24:57",
      "content": "<p>I’ve been struggling with a large gap between my cross-validation (CV) and leaderboard (LB) scores. My CV score is around 0.75, but my LB score is stuck at about 0.45. I’ll share the training and inference code below. Could someone please help me figure out what I might be missing?</p>\n<p><a href=\"https://www.kaggle.com/code/elhnan/cmi-competition-submission\" target=\"_blank\">Inference notebook</a></p>",
      "rawMarkdown": "I’ve been struggling with a large gap between my cross-validation (CV) and leaderboard (LB) scores. My CV score is around 0.75, but my LB score is stuck at about 0.45. I’ll share the training and inference code below. Could someone please help me figure out what I might be missing?\n\n[Inference notebook](https://www.kaggle.com/code/elhnan/cmi-competition-submission)",
      "votes": null
    },
    {
      "id": "3279445",
      "postDate": "08/31/2025 19:45:57",
      "content": "<p>The test set includes 50% samples that are missing the thm and tof sensors. You should prepare your models with this in mind</p>",
      "rawMarkdown": "The test set includes 50% samples that are missing the thm and tof sensors. You should prepare your models with this in mind",
      "votes": null
    },
    {
      "id": "3279954",
      "postDate": "09/01/2025 19:17:07",
      "content": "<p>Thank you!</p>",
      "rawMarkdown": "Thank you!",
      "votes": null
    },
    {
      "id": "3280110",
      "postDate": "09/02/2025 05:22:37",
      "content": "<p>Didn't u mistake the order of the labels?<br>\nI had a similar mistake.</p>",
      "rawMarkdown": "Didn't u mistake the order of the labels?\nI had a similar mistake.",
      "votes": null
    },
    {
      "id": "3288157",
      "postDate": "09/13/2025 09:35:03",
      "content": "<p>Please expand on this!</p>",
      "rawMarkdown": "Please expand on this!",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 3279445,
      "author_name": "ryches",
      "author_url": "",
      "post_date": "08/31/2025 19:45:57",
      "content": "<p>The test set includes 50% samples that are missing the thm and tof sensors. You should prepare your models with this in mind</p>",
      "votes": null,
      "replies": [
        {
          "id": 3279954,
          "author_name": "elhnan",
          "author_url": "",
          "post_date": "09/01/2025 19:17:07",
          "content": "<p>Thank you!</p>",
          "votes": null,
          "replies": []
        }
      ]
    },
    {
      "id": 3280110,
      "author_name": "rakuwa",
      "author_url": "",
      "post_date": "09/02/2025 05:22:37",
      "content": "<p>Didn't u mistake the order of the labels?<br>\nI had a similar mistake.</p>",
      "votes": null,
      "replies": [
        {
          "id": 3288157,
          "author_name": "elhnan",
          "author_url": "",
          "post_date": "09/13/2025 09:35:03",
          "content": "<p>Please expand on this!</p>",
          "votes": null,
          "replies": []
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "3279393": "I’ve been struggling with a large gap between my cross-validation (CV) and leaderboard (LB) scores. My CV score is around 0.75, but my LB score is stuck at about 0.45. I’ll share the training and inference code below. Could someone please help me figure out what I might be missing?\n\n[Inference notebook](https://www.kaggle.com/code/elhnan/cmi-competition-submission)",
    "3279445": "The test set includes 50% samples that are missing the thm and tof sensors. You should prepare your models with this in mind",
    "3279954": "Thank you!",
    "3280110": "Didn't u mistake the order of the labels?\nI had a similar mistake.",
    "3288157": "Please expand on this!"
  },
  "source": "meta"
}