{
  "id": 468248,
  "title": "How spectrograms for this competions were created?",
  "url": "/competitions/hms-harmful-brain-activity-classification/discussion/468248",
  "author_name": "",
  "post_date": "2024-01-15T23:45:00.039242200Z",
  "votes": 4,
  "comment_count": 4,
  "views": 0,
  "content": "<p>How the spectrograms were created from EEG data in this competion dataset?</p>",
  "messages": [
    {
      "id": "2603618",
      "postDate": "01/15/2024 23:45:00",
      "content": "<p>How the spectrograms were created from EEG data in this competion dataset?</p>",
      "rawMarkdown": "How the spectrograms were created from EEG data in this competion dataset?",
      "votes": null
    },
    {
      "id": "2603621",
      "postDate": "01/15/2024 23:51:47",
      "content": "<p>There is a discussion about this <a href=\"https://www.kaggle.com/competitions/hms-harmful-brain-activity-classification/discussion/467877\" target=\"_blank\">here</a></p>",
      "rawMarkdown": "There is a discussion about this [here][1]\n\n[1]: https://www.kaggle.com/competitions/hms-harmful-brain-activity-classification/discussion/467877",
      "votes": null
    },
    {
      "id": "2603624",
      "postDate": "01/16/2024 00:03:35",
      "content": "<p>I published a starter notebook <a href=\"https://www.kaggle.com/code/cdeotte/how-to-make-spectrograms-from-eeg\" target=\"_blank\">here</a> to create spectrograms from eegs </p>",
      "rawMarkdown": "I published a starter notebook [here][1] to create spectrograms from eegs \n\n[1]: https://www.kaggle.com/code/cdeotte/how-to-make-spectrograms-from-eeg",
      "votes": null
    },
    {
      "id": "2604370",
      "postDate": "01/16/2024 11:47:28",
      "content": "<p>As you can see here <a href=\"https://mne.tools/dev/auto_examples/time_frequency/time_frequency_simulated.html#\" target=\"_blank\">https://mne.tools/dev/auto_examples/time_frequency/time_frequency_simulated.html#</a> depending on the method different spectrogram will be created.  Hence my question, how the spectrograms in the dataset were created. </p>",
      "rawMarkdown": "As you can see here https://mne.tools/dev/auto_examples/time_frequency/time_frequency_simulated.html# depending on the method different spectrogram will be created.  Hence my question, how the spectrograms in the dataset were created.",
      "votes": null
    },
    {
      "id": "2604474",
      "postDate": "01/16/2024 12:54:06",
      "content": "<p>Yes there are many things that could lead to different spectrograms and it would be good to know how Kaggle created theirs. Here are some reasons why creating them ourselves could be different from Kaggle's:</p>\n<ul>\n<li>Kaggle may create their spectrograms from signals not available to us</li>\n<li>Our formula of LL = ( (Fp1 - F7) + (F7 - T3) + (T3 - T5) + (T5 - O1) )/4. may not be the correct way to create the single LL time series.</li>\n<li>Our spectrogram hyperparameter settings differ from Kaggle's</li>\n<li>Kaggle may have used denoise before creating spectrograms</li>\n<li>etc etc</li>\n</ul>",
      "rawMarkdown": "Yes there are many things that could lead to different spectrograms and it would be good to know how Kaggle created theirs. Here are some reasons why creating them ourselves could be different from Kaggle's:\n\n* Kaggle may create their spectrograms from signals not available to us\n* Our formula of LL = ( (Fp1 - F7) + (F7 - T3) + (T3 - T5) + (T5 - O1) )/4. may not be the correct way to create the single LL time series.\n* Our spectrogram hyperparameter settings differ from Kaggle's\n* Kaggle may have used denoise before creating spectrograms\n* etc etc",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 2603621,
      "author_name": "cdeotte",
      "author_url": "",
      "post_date": "01/15/2024 23:51:47",
      "content": "<p>There is a discussion about this <a href=\"https://www.kaggle.com/competitions/hms-harmful-brain-activity-classification/discussion/467877\" target=\"_blank\">here</a></p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 2603624,
      "author_name": "cdeotte",
      "author_url": "",
      "post_date": "01/16/2024 00:03:35",
      "content": "<p>I published a starter notebook <a href=\"https://www.kaggle.com/code/cdeotte/how-to-make-spectrograms-from-eeg\" target=\"_blank\">here</a> to create spectrograms from eegs </p>",
      "votes": null,
      "replies": [
        {
          "id": 2604370,
          "author_name": "radbis",
          "author_url": "",
          "post_date": "01/16/2024 11:47:28",
          "content": "<p>As you can see here <a href=\"https://mne.tools/dev/auto_examples/time_frequency/time_frequency_simulated.html#\" target=\"_blank\">https://mne.tools/dev/auto_examples/time_frequency/time_frequency_simulated.html#</a> depending on the method different spectrogram will be created.  Hence my question, how the spectrograms in the dataset were created. </p>",
          "votes": null,
          "replies": [
            {
              "id": 2604474,
              "author_name": "cdeotte",
              "author_url": "",
              "post_date": "01/16/2024 12:54:06",
              "content": "<p>Yes there are many things that could lead to different spectrograms and it would be good to know how Kaggle created theirs. Here are some reasons why creating them ourselves could be different from Kaggle's:</p>\n<ul>\n<li>Kaggle may create their spectrograms from signals not available to us</li>\n<li>Our formula of LL = ( (Fp1 - F7) + (F7 - T3) + (T3 - T5) + (T5 - O1) )/4. may not be the correct way to create the single LL time series.</li>\n<li>Our spectrogram hyperparameter settings differ from Kaggle's</li>\n<li>Kaggle may have used denoise before creating spectrograms</li>\n<li>etc etc</li>\n</ul>",
              "votes": null,
              "replies": []
            }
          ]
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "2603618": "How the spectrograms were created from EEG data in this competion dataset?",
    "2603621": "There is a discussion about this [here][1]\n\n[1]: https://www.kaggle.com/competitions/hms-harmful-brain-activity-classification/discussion/467877",
    "2603624": "I published a starter notebook [here][1] to create spectrograms from eegs \n\n[1]: https://www.kaggle.com/code/cdeotte/how-to-make-spectrograms-from-eeg",
    "2604370": "As you can see here https://mne.tools/dev/auto_examples/time_frequency/time_frequency_simulated.html# depending on the method different spectrogram will be created.  Hence my question, how the spectrograms in the dataset were created.",
    "2604474": "Yes there are many things that could lead to different spectrograms and it would be good to know how Kaggle created theirs. Here are some reasons why creating them ourselves could be different from Kaggle's:\n\n* Kaggle may create their spectrograms from signals not available to us\n* Our formula of LL = ( (Fp1 - F7) + (F7 - T3) + (T3 - T5) + (T5 - O1) )/4. may not be the correct way to create the single LL time series.\n* Our spectrogram hyperparameter settings differ from Kaggle's\n* Kaggle may have used denoise before creating spectrograms\n* etc etc"
  },
  "source": "meta"
}