{
  "id": 57163,
  "title": "What does the item_id in periods_train.csv mean?",
  "url": "/competitions/avito-demand-prediction/discussion/57163",
  "author_name": "",
  "post_date": "2018-05-20T07:09:07.376926800Z",
  "votes": null,
  "comment_count": 1,
  "views": 0,
  "content": "<p>I find that the item_id in the train.csv doesn't appear in the periods_train.csv, so what's the meaning of the item_id in periods_train.csv?</p>",
  "messages": [
    {
      "id": "331015",
      "postDate": "05/20/2018 07:09:07",
      "content": "<p>I find that the item_id in the train.csv doesn't appear in the periods_train.csv, so what's the meaning of the item_id in periods_train.csv?</p>",
      "rawMarkdown": "I find that the item_id in the train.csv doesn't appear in the periods_train.csv, so what's the meaning of the item_id in periods_train.csv?",
      "votes": null
    },
    {
      "id": "331029",
      "postDate": "05/20/2018 07:42:39",
      "content": "<p>periods_train.csv - Supplemental data showing the dates when the ads from train_active.csv were activated and when they where displayed.</p>\n\n<p>So item_id from periods_train belong to train_active and not train.</p>",
      "rawMarkdown": "periods_train.csv - Supplemental data showing the dates when the ads from train_active.csv were activated and when they where displayed.\n\nSo item_id from periods_train belong to train_active and not train.",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 331029,
      "author_name": "artgor",
      "author_url": "",
      "post_date": "05/20/2018 07:42:39",
      "content": "<p>periods_train.csv - Supplemental data showing the dates when the ads from train_active.csv were activated and when they where displayed.</p>\n\n<p>So item_id from periods_train belong to train_active and not train.</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "331015": "I find that the item_id in the train.csv doesn't appear in the periods_train.csv, so what's the meaning of the item_id in periods_train.csv?",
    "331029": "periods_train.csv - Supplemental data showing the dates when the ads from train_active.csv were activated and when they where displayed.\n\nSo item_id from periods_train belong to train_active and not train."
  },
  "source": "meta"
}