{
  "id": 611603,
  "title": "Public solutions lacking CV",
  "url": "/competitions/MABe-mouse-behavior-detection/discussion/611603",
  "author_name": "",
  "post_date": "2025-10-13T01:01:11.150025400Z",
  "votes": 4,
  "comment_count": 2,
  "views": 0,
  "content": "<p>Hi, I'm new to this competition. I've read a few public solutions with highest scores, and I found that none of them included any local CV. Why? Is CV not applicable in this task? If so, do we need to iterate our solutions according to Public LB?</p>",
  "messages": [
    {
      "id": "3301257",
      "postDate": "10/13/2025 01:01:11",
      "content": "<p>Hi, I'm new to this competition. I've read a few public solutions with highest scores, and I found that none of them included any local CV. Why? Is CV not applicable in this task? If so, do we need to iterate our solutions according to Public LB?</p>",
      "rawMarkdown": "Hi, I'm new to this competition. I've read a few public solutions with highest scores, and I found that none of them included any local CV. Why? Is CV not applicable in this task? If so, do we need to iterate our solutions according to Public LB?",
      "votes": null
    },
    {
      "id": "3301294",
      "postDate": "10/13/2025 04:19:10",
      "content": "<p>Of course cross-validation is applicable for this task, and every serious data scientist uses it. The code can be found in <a href=\"https://www.kaggle.com/code/ambrosm/mabe-nearest-neighbors-the-original?scriptVersionId=264317621\" target=\"_blank\">MABe Nearest Neighbors: The Original ⭐️⭐️⭐️⭐️⭐️</a>. </p>\n<p>All top-scoring notebooks are derived from this code, and you may speculate why they dropped the cross-validation part.</p>",
      "rawMarkdown": "Of course cross-validation is applicable for this task, and every serious data scientist uses it. The code can be found in [MABe Nearest Neighbors: The Original ⭐️⭐️⭐️⭐️⭐️](https://www.kaggle.com/code/ambrosm/mabe-nearest-neighbors-the-original?scriptVersionId=264317621). \n\nAll top-scoring notebooks are derived from this code, and you may speculate why they dropped the cross-validation part.",
      "votes": null
    },
    {
      "id": "3301313",
      "postDate": "10/13/2025 05:39:11",
      "content": "<p>Thank you!</p>",
      "rawMarkdown": "Thank you!",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 3301294,
      "author_name": "ambrosm",
      "author_url": "",
      "post_date": "10/13/2025 04:19:10",
      "content": "<p>Of course cross-validation is applicable for this task, and every serious data scientist uses it. The code can be found in <a href=\"https://www.kaggle.com/code/ambrosm/mabe-nearest-neighbors-the-original?scriptVersionId=264317621\" target=\"_blank\">MABe Nearest Neighbors: The Original ⭐️⭐️⭐️⭐️⭐️</a>. </p>\n<p>All top-scoring notebooks are derived from this code, and you may speculate why they dropped the cross-validation part.</p>",
      "votes": null,
      "replies": [
        {
          "id": 3301313,
          "author_name": "zjm271441",
          "author_url": "",
          "post_date": "10/13/2025 05:39:11",
          "content": "<p>Thank you!</p>",
          "votes": null,
          "replies": []
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "3301257": "Hi, I'm new to this competition. I've read a few public solutions with highest scores, and I found that none of them included any local CV. Why? Is CV not applicable in this task? If so, do we need to iterate our solutions according to Public LB?",
    "3301294": "Of course cross-validation is applicable for this task, and every serious data scientist uses it. The code can be found in [MABe Nearest Neighbors: The Original ⭐️⭐️⭐️⭐️⭐️](https://www.kaggle.com/code/ambrosm/mabe-nearest-neighbors-the-original?scriptVersionId=264317621). \n\nAll top-scoring notebooks are derived from this code, and you may speculate why they dropped the cross-validation part.",
    "3301313": "Thank you!"
  },
  "source": "meta"
}