{
  "id": 535440,
  "title": "Issues with measurement units",
  "url": "/competitions/child-mind-institute-problematic-internet-use/discussion/535440",
  "author_name": "",
  "post_date": "2024-09-22T06:59:29.390865600Z",
  "votes": 5,
  "comment_count": 4,
  "views": 0,
  "content": "<p>I started with a first look at the data. Because I am a \"former\" hand surgeon and I worked on grip strength in adults I had special interest in these and other values.</p>\n<ol>\n<li>There is are no measurement units for grip strength dominant and non dominant(kg or lb)</li>\n<li>BMI is in kg/m^2 but height and weight are in inch and lb</li>\n<li>BIA-BIA-BMI has no units</li>\n<li>The following BIA-BIA-… values have no units</li>\n</ol>\n<p>Be careful, because this can cause some trouble.<br>\nDeeper analysis of the values is coming soon<br>\nPeter</p>",
  "messages": [
    {
      "id": "2995317",
      "postDate": "09/22/2024 06:59:29",
      "content": "<p>I started with a first look at the data. Because I am a \"former\" hand surgeon and I worked on grip strength in adults I had special interest in these and other values.</p>\n<ol>\n<li>There is are no measurement units for grip strength dominant and non dominant(kg or lb)</li>\n<li>BMI is in kg/m^2 but height and weight are in inch and lb</li>\n<li>BIA-BIA-BMI has no units</li>\n<li>The following BIA-BIA-… values have no units</li>\n</ol>\n<p>Be careful, because this can cause some trouble.<br>\nDeeper analysis of the values is coming soon<br>\nPeter</p>",
      "rawMarkdown": "I started with a first look at the data. Because I am a \"former\" hand surgeon and I worked on grip strength in adults I had special interest in these and other values.\n1. There is are no measurement units for grip strength dominant and non dominant(kg or lb)\n2. BMI is in kg/m^2 but height and weight are in inch and lb\n3. BIA-BIA-BMI has no units\n4. The following BIA-BIA-... values have no units\n\nBe careful, because this can cause some trouble.\nDeeper analysis of the values is coming soon\nPeter",
      "votes": null
    },
    {
      "id": "2995365",
      "postDate": "09/22/2024 08:39:35",
      "content": "<p><a href=\"https://www.kaggle.com/pehahn\" target=\"_blank\">@pehahn</a> totally agreed, I think some odd looking values in the Bioelectrical Impedence series columns could be due to odd units and may not be measurement errors as well. </p>\n<p>This competition is perhaps 99% feature engineering and 1% model training!</p>",
      "rawMarkdown": "pehahn totally agreed, I think some odd looking values in the Bioelectrical Impedence series columns could be due to odd units and may not be measurement errors as well. \n\nThis competition is perhaps 99% feature engineering and 1% model training!",
      "votes": null
    },
    {
      "id": "2995377",
      "postDate": "09/22/2024 09:05:00",
      "content": "<p>What do you think about fat mass index and body fat percentage having negative values? it doesn't seem like a units problem, does it?<br>\n<a href=\"https://www.kaggle.com/competitions/child-mind-institute-problematic-internet-use/discussion/535354\" target=\"_blank\">Here are all the data issues I have found so far</a>.</p>",
      "rawMarkdown": "What do you think about fat mass index and body fat percentage having negative values? it doesn't seem like a units problem, does it?\n[Here are all the data issues I have found so far](https://www.kaggle.com/competitions/child-mind-institute-problematic-internet-use/discussion/535354).",
      "votes": null
    },
    {
      "id": "2995405",
      "postDate": "09/22/2024 09:30:12",
      "content": "<p><a href=\"https://www.kaggle.com/ravi20076\" target=\"_blank\">@ravi20076</a> I agree. Missing data, imputation, normalizing … much work to be done</p>",
      "rawMarkdown": "ravi20076 I agree. Missing data, imputation, normalizing ... much work to be done",
      "votes": null
    },
    {
      "id": "2995408",
      "postDate": "09/22/2024 09:31:25",
      "content": "<p>You are right <a href=\"https://www.kaggle.com/antoninadolgorukova\" target=\"_blank\">@antoninadolgorukova</a>, negative values makes no sense.</p>",
      "rawMarkdown": "You are right @antoninadolgorukova, negative values makes no sense.",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 2995365,
      "author_name": "ravi20076",
      "author_url": "",
      "post_date": "09/22/2024 08:39:35",
      "content": "<p><a href=\"https://www.kaggle.com/pehahn\" target=\"_blank\">@pehahn</a> totally agreed, I think some odd looking values in the Bioelectrical Impedence series columns could be due to odd units and may not be measurement errors as well. </p>\n<p>This competition is perhaps 99% feature engineering and 1% model training!</p>",
      "votes": null,
      "replies": [
        {
          "id": 2995377,
          "author_name": "antoninadolgorukova",
          "author_url": "",
          "post_date": "09/22/2024 09:05:00",
          "content": "<p>What do you think about fat mass index and body fat percentage having negative values? it doesn't seem like a units problem, does it?<br>\n<a href=\"https://www.kaggle.com/competitions/child-mind-institute-problematic-internet-use/discussion/535354\" target=\"_blank\">Here are all the data issues I have found so far</a>.</p>",
          "votes": null,
          "replies": [
            {
              "id": 2995408,
              "author_name": "pehahn",
              "author_url": "",
              "post_date": "09/22/2024 09:31:25",
              "content": "<p>You are right <a href=\"https://www.kaggle.com/antoninadolgorukova\" target=\"_blank\">@antoninadolgorukova</a>, negative values makes no sense.</p>",
              "votes": null,
              "replies": []
            }
          ]
        },
        {
          "id": 2995405,
          "author_name": "pehahn",
          "author_url": "",
          "post_date": "09/22/2024 09:30:12",
          "content": "<p><a href=\"https://www.kaggle.com/ravi20076\" target=\"_blank\">@ravi20076</a> I agree. Missing data, imputation, normalizing … much work to be done</p>",
          "votes": null,
          "replies": []
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "2995317": "I started with a first look at the data. Because I am a \"former\" hand surgeon and I worked on grip strength in adults I had special interest in these and other values.\n1. There is are no measurement units for grip strength dominant and non dominant(kg or lb)\n2. BMI is in kg/m^2 but height and weight are in inch and lb\n3. BIA-BIA-BMI has no units\n4. The following BIA-BIA-... values have no units\n\nBe careful, because this can cause some trouble.\nDeeper analysis of the values is coming soon\nPeter",
    "2995365": "pehahn totally agreed, I think some odd looking values in the Bioelectrical Impedence series columns could be due to odd units and may not be measurement errors as well. \n\nThis competition is perhaps 99% feature engineering and 1% model training!",
    "2995377": "What do you think about fat mass index and body fat percentage having negative values? it doesn't seem like a units problem, does it?\n[Here are all the data issues I have found so far](https://www.kaggle.com/competitions/child-mind-institute-problematic-internet-use/discussion/535354).",
    "2995405": "ravi20076 I agree. Missing data, imputation, normalizing ... much work to be done",
    "2995408": "You are right @antoninadolgorukova, negative values makes no sense."
  },
  "source": "meta"
}