{
  "id": 4456,
  "title": "Data Model",
  "url": "/competitions/cause-effect-pairs/discussion/4456",
  "author_name": "",
  "post_date": "2013-04-28T06:32:08.617Z",
  "votes": null,
  "comment_count": 1,
  "views": 997,
  "content": "<div>I think one group data&nbsp;<span style=\"font-size:medium\">in train data set&nbsp;may be related to one group data in test data set.&nbsp;But how can I know &nbsp;two groups data( one group data is\r\n<span style=\"font-size:medium\">in train data set&nbsp;and&nbsp;another group data is&nbsp;in test data set&nbsp;) come from the same event or model ?\r\n</span></span></div>\r\n<div><span style=\"font-size:medium\"><span style=\"font-size:medium\">Thanks .</span></span></div>",
  "messages": [
    {
      "id": "23566",
      "postDate": "04/28/2013 06:32:08",
      "content": "<div>I think one group data&nbsp;<span style=\"font-size:medium\">in train data set&nbsp;may be related to one group data in test data set.&nbsp;But how can I know &nbsp;two groups data( one group data is\r\n<span style=\"font-size:medium\">in train data set&nbsp;and&nbsp;another group data is&nbsp;in test data set&nbsp;) come from the same event or model ?\r\n</span></span></div>\r\n<div><span style=\"font-size:medium\"><span style=\"font-size:medium\">Thanks .</span></span></div>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "23607",
      "postDate": "04/29/2013 01:59:04",
      "content": "<p>We used variables from the same datasets as &quot;raw material&quot; to generate data so the marginal distributions may look related. But each pair of variable is a separate problem and unrelated other pairs so it is not useful to try to group them.</p>",
      "rawMarkdown": "",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 23607,
      "author_name": "iguyon",
      "author_url": "",
      "post_date": "04/29/2013 01:59:04",
      "content": "<p>We used variables from the same datasets as &quot;raw material&quot; to generate data so the marginal distributions may look related. But each pair of variable is a separate problem and unrelated other pairs so it is not useful to try to group them.</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "23566": "",
    "23607": ""
  },
  "source": "meta"
}