{
  "id": 166740,
  "title": "Outputs with Null Values",
  "url": "/competitions/kddbr-2020/discussion/166740",
  "author_name": "",
  "post_date": "2020-07-13T19:42:17.992592Z",
  "votes": 5,
  "comment_count": 2,
  "views": 0,
  "content": "<p>Hello everyone, I was playing with the output data and something took my attention,  all the output columns with number 13 has null values. \nIs this right? \nIf the answer is yes, I would like to know the meaning of null values in the outputs.\nThanks!</p>\n\n<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-user-content/o/inbox%2F1056596%2F9d45f6abfffdab1943638031590dfe4a%2Fnull_outputs.png?generation=1594669308756182&amp;alt=media\" alt=\"\"></p>",
  "messages": [
    {
      "id": "928200",
      "postDate": "07/13/2020 19:42:17",
      "content": "<p>Hello everyone, I was playing with the output data and something took my attention,  all the output columns with number 13 has null values. \nIs this right? \nIf the answer is yes, I would like to know the meaning of null values in the outputs.\nThanks!</p>\n\n<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-user-content/o/inbox%2F1056596%2F9d45f6abfffdab1943638031590dfe4a%2Fnull_outputs.png?generation=1594669308756182&amp;alt=media\" alt=\"\"></p>",
      "rawMarkdown": "Hello everyone, I was playing with the output data and something took my attention,  all the output columns with number 13 has null values. \nIs this right? \nIf the answer is yes, I would like to know the meaning of null values in the outputs.\nThanks!\n\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-user-content/o/inbox%2F1056596%2F9d45f6abfffdab1943638031590dfe4a%2Fnull_outputs.png?generation=1594669308756182&amp;alt=media)",
      "votes": null
    },
    {
      "id": "928289",
      "postDate": "07/13/2020 20:59:59",
      "content": "<p>I think this is normal because all data passed for normalization/scaling (maybe z-score or Standard Scaler). If in some date has only one register (if scaling for date), the result value could be null.   I'm not sure about it....</p>",
      "rawMarkdown": "I think this is normal because all data passed for normalization/scaling (maybe z-score or Standard Scaler). If in some date has only one register (if scaling for date), the result value could be null.   I'm not sure about it....",
      "votes": null
    },
    {
      "id": "929477",
      "postDate": "07/14/2020 17:36:03",
      "content": "<p>I think Marlesson is right again, this is a side effect of scaling.</p>",
      "rawMarkdown": "I think Marlesson is right again, this is a side effect of scaling.",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 928289,
      "author_name": "marlesson",
      "author_url": "",
      "post_date": "07/13/2020 20:59:59",
      "content": "<p>I think this is normal because all data passed for normalization/scaling (maybe z-score or Standard Scaler). If in some date has only one register (if scaling for date), the result value could be null.   I'm not sure about it....</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 929477,
      "author_name": "aclorena",
      "author_url": "",
      "post_date": "07/14/2020 17:36:03",
      "content": "<p>I think Marlesson is right again, this is a side effect of scaling.</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "928200": "Hello everyone, I was playing with the output data and something took my attention,  all the output columns with number 13 has null values. \nIs this right? \nIf the answer is yes, I would like to know the meaning of null values in the outputs.\nThanks!\n\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-user-content/o/inbox%2F1056596%2F9d45f6abfffdab1943638031590dfe4a%2Fnull_outputs.png?generation=1594669308756182&amp;alt=media)",
    "928289": "I think this is normal because all data passed for normalization/scaling (maybe z-score or Standard Scaler). If in some date has only one register (if scaling for date), the result value could be null.   I'm not sure about it....",
    "929477": "I think Marlesson is right again, this is a side effect of scaling."
  },
  "source": "meta"
}