{
  "id": 67393,
  "title": "CV should be trusted or not?",
  "url": "/competitions/ga-customer-revenue-prediction/discussion/67393",
  "author_name": "",
  "post_date": "2018-10-02T09:16:11.097145500Z",
  "votes": 2,
  "comment_count": 2,
  "views": 0,
  "content": "<p>After adding a feature to my dataset my CV error was decreased by 0.01 but when I tested it on the Leader Board the LB error was increased by the same quantity. Does this also mean when my CV error increases the LB score would decrease?</p>",
  "messages": [
    {
      "id": "397294",
      "postDate": "10/02/2018 09:16:11",
      "content": "<p>After adding a feature to my dataset my CV error was decreased by 0.01 but when I tested it on the Leader Board the LB error was increased by the same quantity. Does this also mean when my CV error increases the LB score would decrease?</p>",
      "rawMarkdown": "After adding a feature to my dataset my CV error was decreased by 0.01 but when I tested it on the Leader Board the LB error was increased by the same quantity. Does this also mean when my CV error increases the LB score would decrease?",
      "votes": null
    },
    {
      "id": "397296",
      "postDate": "10/02/2018 09:20:42",
      "content": "<p>I have also faced this issues.I am not sure what will happen but I will say 'ALWAYS TRUST YOUR CV'</p>",
      "rawMarkdown": "I have also faced this issues.I am not sure what will happen but I will say 'ALWAYS TRUST YOUR CV'",
      "votes": null
    },
    {
      "id": "401822",
      "postDate": "10/10/2018 18:42:40",
      "content": "<p>Having the same issue. I have lowered my local CV by 0.02 but LB Score worsened.</p>",
      "rawMarkdown": "Having the same issue. I have lowered my local CV by 0.02 but LB Score worsened.",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 397296,
      "author_name": "suchith0312",
      "author_url": "",
      "post_date": "10/02/2018 09:20:42",
      "content": "<p>I have also faced this issues.I am not sure what will happen but I will say 'ALWAYS TRUST YOUR CV'</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 401822,
      "author_name": "mbkinaci",
      "author_url": "",
      "post_date": "10/10/2018 18:42:40",
      "content": "<p>Having the same issue. I have lowered my local CV by 0.02 but LB Score worsened.</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "397294": "After adding a feature to my dataset my CV error was decreased by 0.01 but when I tested it on the Leader Board the LB error was increased by the same quantity. Does this also mean when my CV error increases the LB score would decrease?",
    "397296": "I have also faced this issues.I am not sure what will happen but I will say 'ALWAYS TRUST YOUR CV'",
    "401822": "Having the same issue. I have lowered my local CV by 0.02 but LB Score worsened."
  },
  "source": "meta"
}