{
  "id": 4455,
  "title": "Train sample 442",
  "url": "/competitions/cause-effect-pairs/discussion/4455",
  "author_name": "",
  "post_date": "2013-04-28T05:41:53.047Z",
  "votes": null,
  "comment_count": 1,
  "views": 920,
  "content": "<p>Sample 442 in train file contains all zeros for B values except in one location (2968), yet target value confidently indicates that A-&gt;B (train442,1,1). How is that possible?</p>\r\n<p>If we assume that was result of &quot;salting&quot; the training set with dummy values, shouldn't that be indicated in target set?</p>\r\n<p><span style=\"line-height:1.4em\">There are more examples. Train992 contains all zeros in A and target indicates B-&gt;A. Train711 contains almost only zeros in A and target also tells us that B-&gt;A.</span></p>",
  "messages": [
    {
      "id": "23565",
      "postDate": "04/28/2013 05:41:53",
      "content": "<p>Sample 442 in train file contains all zeros for B values except in one location (2968), yet target value confidently indicates that A-&gt;B (train442,1,1). How is that possible?</p>\r\n<p>If we assume that was result of &quot;salting&quot; the training set with dummy values, shouldn't that be indicated in target set?</p>\r\n<p><span style=\"line-height:1.4em\">There are more examples. Train992 contains all zeros in A and target indicates B-&gt;A. Train711 contains almost only zeros in A and target also tells us that B-&gt;A.</span></p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "23608",
      "postDate": "04/29/2013 02:02:02",
      "content": "<p>This is part of the problem.</p>",
      "rawMarkdown": "",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 23608,
      "author_name": "iguyon",
      "author_url": "",
      "post_date": "04/29/2013 02:02:02",
      "content": "<p>This is part of the problem.</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "23565": "",
    "23608": ""
  },
  "source": "meta"
}