{
  "id": 77067,
  "title": "K-fold cv is high but low LB score",
  "url": "/competitions/quora-insincere-questions-classification/discussion/77067",
  "author_name": "",
  "post_date": "2019-01-09T06:59:29.610000",
  "votes": 0,
  "comment_count": 0,
  "views": 0,
  "content": "<p>Hi,</p>\n\n<p>I ran my model with different k-fold. The cv of each run is quite high. The variance of the CVs in each run is very low. However, the LB score is not as high as the CV score.  What would be the reason for this?</p>\n\n<p>I tried different size of the data and different class weights and this is still happening.</p>\n\n<p>Cheers</p>",
  "messages": [
    {
      "id": 452798,
      "postDate": "2019-01-09T06:59:29.610Z",
      "content": "<p>Hi,</p>\n\n<p>I ran my model with different k-fold. The cv of each run is quite high. The variance of the CVs in each run is very low. However, the LB score is not as high as the CV score.  What would be the reason for this?</p>\n\n<p>I tried different size of the data and different class weights and this is still happening.</p>\n\n<p>Cheers</p>",
      "rawMarkdown": "Hi,\n\nI ran my model with different k-fold. The cv of each run is quite high. The variance of the CVs in each run is very low. However, the LB score is not as high as the CV score.  What would be the reason for this?\n\nI tried different size of the data and different class weights and this is still happening.\n\nCheers"
    }
  ],
  "comments": [],
  "raw_markdown_by_id": {
    "452798": "Hi,\n\nI ran my model with different k-fold. The cv of each run is quite high. The variance of the CVs in each run is very low. However, the LB score is not as high as the CV score.  What would be the reason for this?\n\nI tried different size of the data and different class weights and this is still happening.\n\nCheers"
  }
}