{
  "id": 9407,
  "title": "How similar are the purchasing behaviours between train & test?",
  "url": "/competitions/acquire-valued-shoppers-challenge/discussion/9407",
  "author_name": "",
  "post_date": "2014-06-06T23:19:23.900Z",
  "votes": null,
  "comment_count": 1,
  "views": 944,
  "content": "<p>In regards to the large or unwanted variance in performance between the train and test sets, it will be worth undertaking an analysis to see how similar or different for that matter are the 2 sets in terms of the features generated for modelling. I plan to do this next as I am seeing these variances in my models performance. Something as simple as comparing the density plots and/or q-q plots of each feature in the train and test sets or for the ones that prove to be troublesome. Just a thought. happy to hear what the others think...</p>",
  "messages": [
    {
      "id": "48811",
      "postDate": "06/06/2014 23:19:23",
      "content": "<p>In regards to the large or unwanted variance in performance between the train and test sets, it will be worth undertaking an analysis to see how similar or different for that matter are the 2 sets in terms of the features generated for modelling. I plan to do this next as I am seeing these variances in my models performance. Something as simple as comparing the density plots and/or q-q plots of each feature in the train and test sets or for the ones that prove to be troublesome. Just a thought. happy to hear what the others think...</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "48821",
      "postDate": "06/07/2014 06:50:36",
      "content": "<p>For me it's seems that basically train and test are all diffirent except some common. IMHO&nbsp;this competition is&nbsp;more about trying things and watching results then some deep analysis</p>",
      "rawMarkdown": "",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 48821,
      "author_name": "dremovd",
      "author_url": "",
      "post_date": "06/07/2014 06:50:36",
      "content": "<p>For me it's seems that basically train and test are all diffirent except some common. IMHO&nbsp;this competition is&nbsp;more about trying things and watching results then some deep analysis</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "48811": "",
    "48821": ""
  },
  "source": "meta"
}