{
  "id": 77193,
  "title": "Does this operation cause the data leakage?",
  "url": "/competitions/elo-merchant-category-recommendation/discussion/77193",
  "author_name": "",
  "post_date": "2019-01-10T13:54:08.610819900Z",
  "votes": -1,
  "comment_count": 1,
  "views": 0,
  "content": "<p><code>for col in ['category_2','category_3']:\n    df_new_merchant_trans[col+'_mean'] = df_new_merchant_trans.groupby([col])\\ \n    ['purchase_amount'].transform('mean')\n    aggs[col+'_mean'] = ['mean']</code></p>",
  "messages": [
    {
      "id": "453632",
      "postDate": "01/10/2019 13:54:08",
      "content": "<p><code>for col in ['category_2','category_3']:\n    df_new_merchant_trans[col+'_mean'] = df_new_merchant_trans.groupby([col])\\ \n    ['purchase_amount'].transform('mean')\n    aggs[col+'_mean'] = ['mean']</code></p>",
      "rawMarkdown": "`for col in ['category_2','category_3']:\n    df_new_merchant_trans[col+'_mean'] = df_new_merchant_trans.groupby([col])\\ \n    ['purchase_amount'].transform('mean')\n    aggs[col+'_mean'] = ['mean']`",
      "votes": null
    },
    {
      "id": "453705",
      "postDate": "01/10/2019 16:31:34",
      "content": "<p>Probably not?</p>",
      "rawMarkdown": "Probably not?",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 453705,
      "author_name": "peterhurford",
      "author_url": "",
      "post_date": "01/10/2019 16:31:34",
      "content": "<p>Probably not?</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "453632": "`for col in ['category_2','category_3']:\n    df_new_merchant_trans[col+'_mean'] = df_new_merchant_trans.groupby([col])\\ \n    ['purchase_amount'].transform('mean')\n    aggs[col+'_mean'] = ['mean']`",
    "453705": "Probably not?"
  },
  "source": "meta"
}