{
  "id": 471379,
  "title": "Why are the lengths of the training spectrograms smaller than 600?",
  "url": "/competitions/hms-harmful-brain-activity-classification/discussion/471379",
  "author_name": "",
  "post_date": "2024-01-28T07:43:11.153422100Z",
  "votes": 1,
  "comment_count": 2,
  "views": 0,
  "content": "<p>Several spectrogram lengths provided for training have lengths smaller than 600. And the offset seconds values exceeds the maximum lengths</p>\n<p><strong>For example:</strong></p>\n<pre><code>eeg_id=    \nspectrogram_id =     \nspectrogram_offset_min =     \nspectrogram_offset_max =    \nspectrogram_length =  (smaller than )\n</code></pre>\n<p>In the description, it has been stated that experts utilized 10-minute windows, and the spectrograms have been aggregated. Do the rows of the spectrogram represent seconds, or is it something else?</p>",
  "messages": [
    {
      "id": "2623388",
      "postDate": "01/28/2024 07:43:11",
      "content": "<p>Several spectrogram lengths provided for training have lengths smaller than 600. And the offset seconds values exceeds the maximum lengths</p>\n<p><strong>For example:</strong></p>\n<pre><code>eeg_id=    \nspectrogram_id =     \nspectrogram_offset_min =     \nspectrogram_offset_max =    \nspectrogram_length =  (smaller than )\n</code></pre>\n<p>In the description, it has been stated that experts utilized 10-minute windows, and the spectrograms have been aggregated. Do the rows of the spectrogram represent seconds, or is it something else?</p>",
      "rawMarkdown": "Several spectrogram lengths provided for training have lengths smaller than 600. And the offset seconds values exceeds the maximum lengths\n\n**For example:**\n```python\neeg_id=642382\t\nspectrogram_id = 14960202\t\nspectrogram_offset_min = 1032.0\t\nspectrogram_offset_max =1032.0\t\nspectrogram_length = 816 (smaller than 1032)\n```\n\nIn the description, it has been stated that experts utilized 10-minute windows, and the spectrograms have been aggregated. Do the rows of the spectrogram represent seconds, or is it something else?",
      "votes": null
    },
    {
      "id": "2623447",
      "postDate": "01/28/2024 08:19:58",
      "content": "<p>Hi, the unit of time in this context is seconds. There is a column named <code>time</code> which represents the timestamp (in seconds) when the sample was taken. Additionally, a new sample is taken every 2 seconds.</p>",
      "rawMarkdown": "Hi, the unit of time in this context is seconds. There is a column named `time` which represents the timestamp (in seconds) when the sample was taken. Additionally, a new sample is taken every 2 seconds.",
      "votes": null
    },
    {
      "id": "2623995",
      "postDate": "01/28/2024 14:20:52",
      "content": "<p>In the Kaggle spectrogram parquet files, each row is 2 seconds. Therefore 300 rows equals 10 minutes.</p>",
      "rawMarkdown": "In the Kaggle spectrogram parquet files, each row is 2 seconds. Therefore 300 rows equals 10 minutes.",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 2623447,
      "author_name": "trislee02",
      "author_url": "",
      "post_date": "01/28/2024 08:19:58",
      "content": "<p>Hi, the unit of time in this context is seconds. There is a column named <code>time</code> which represents the timestamp (in seconds) when the sample was taken. Additionally, a new sample is taken every 2 seconds.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 2623995,
      "author_name": "cdeotte",
      "author_url": "",
      "post_date": "01/28/2024 14:20:52",
      "content": "<p>In the Kaggle spectrogram parquet files, each row is 2 seconds. Therefore 300 rows equals 10 minutes.</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "2623388": "Several spectrogram lengths provided for training have lengths smaller than 600. And the offset seconds values exceeds the maximum lengths\n\n**For example:**\n```python\neeg_id=642382\t\nspectrogram_id = 14960202\t\nspectrogram_offset_min = 1032.0\t\nspectrogram_offset_max =1032.0\t\nspectrogram_length = 816 (smaller than 1032)\n```\n\nIn the description, it has been stated that experts utilized 10-minute windows, and the spectrograms have been aggregated. Do the rows of the spectrogram represent seconds, or is it something else?",
    "2623447": "Hi, the unit of time in this context is seconds. There is a column named `time` which represents the timestamp (in seconds) when the sample was taken. Additionally, a new sample is taken every 2 seconds.",
    "2623995": "In the Kaggle spectrogram parquet files, each row is 2 seconds. Therefore 300 rows equals 10 minutes."
  },
  "source": "meta"
}