{
  "id": 590540,
  "title": "Extracting frequency domain features can increase your score",
  "url": "/competitions/cmi-detect-behavior-with-sensor-data/discussion/590540",
  "author_name": "",
  "post_date": "2025-07-21T14:49:15.249564300Z",
  "votes": 4,
  "comment_count": 5,
  "views": 0,
  "content": "<p>In my experiments, frequency domain features can improve the score when combined with CNN.</p>",
  "messages": [
    {
      "id": "3251785",
      "postDate": "07/21/2025 14:49:15",
      "content": "<p>In my experiments, frequency domain features can improve the score when combined with CNN.</p>",
      "rawMarkdown": "In my experiments, frequency domain features can improve the score when combined with CNN.",
      "votes": null
    },
    {
      "id": "3251789",
      "postDate": "07/21/2025 14:58:08",
      "content": "<p>True, that</p>",
      "rawMarkdown": "True, that",
      "votes": null
    },
    {
      "id": "3252014",
      "postDate": "07/21/2025 22:20:44",
      "content": "<p>are you sure, I tried fft but it did not work </p>",
      "rawMarkdown": "are you sure, I tried fft but it did not work",
      "votes": null
    },
    {
      "id": "3252217",
      "postDate": "07/22/2025 08:28:49",
      "content": "<p>可以尝试一些频谱能量方面的特征</p>",
      "rawMarkdown": "可以尝试一些频谱能量方面的特征",
      "votes": null
    },
    {
      "id": "3252341",
      "postDate": "07/22/2025 13:48:38",
      "content": "<p>okok 谢谢大佬  </p>",
      "rawMarkdown": "okok 谢谢大佬",
      "votes": null
    },
    {
      "id": "3253963",
      "postDate": "07/25/2025 15:08:04",
      "content": "<p>Hello, I am a beginner. What are the frequency domain features you mentioned and which columns are used to derive them?</p>",
      "rawMarkdown": "Hello, I am a beginner. What are the frequency domain features you mentioned and which columns are used to derive them?",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 3251789,
      "author_name": "vaishnavimudaliar",
      "author_url": "",
      "post_date": "07/21/2025 14:58:08",
      "content": "<p>True, that</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 3252014,
      "author_name": "georgewang73",
      "author_url": "",
      "post_date": "07/21/2025 22:20:44",
      "content": "<p>are you sure, I tried fft but it did not work </p>",
      "votes": null,
      "replies": [
        {
          "id": 3252217,
          "author_name": "kagger3",
          "author_url": "",
          "post_date": "07/22/2025 08:28:49",
          "content": "<p>可以尝试一些频谱能量方面的特征</p>",
          "votes": null,
          "replies": [
            {
              "id": 3252341,
              "author_name": "georgewang73",
              "author_url": "",
              "post_date": "07/22/2025 13:48:38",
              "content": "<p>okok 谢谢大佬  </p>",
              "votes": null,
              "replies": []
            }
          ]
        }
      ]
    },
    {
      "id": 3253963,
      "author_name": "zjj666666",
      "author_url": "",
      "post_date": "07/25/2025 15:08:04",
      "content": "<p>Hello, I am a beginner. What are the frequency domain features you mentioned and which columns are used to derive them?</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "3251785": "In my experiments, frequency domain features can improve the score when combined with CNN.",
    "3251789": "True, that",
    "3252014": "are you sure, I tried fft but it did not work",
    "3252217": "可以尝试一些频谱能量方面的特征",
    "3252341": "okok 谢谢大佬",
    "3253963": "Hello, I am a beginner. What are the frequency domain features you mentioned and which columns are used to derive them?"
  },
  "source": "meta"
}