{
  "id": 6631,
  "title": "Data Issue? User 66 and many others do not appear in train.txt",
  "url": "/competitions/yandex-personalized-web-search-challenge/discussion/6631",
  "author_name": "",
  "post_date": "2013-12-19T06:44:30.040Z",
  "votes": null,
  "comment_count": 1,
  "views": 985,
  "content": "<p>I assume train.txt is ordered by uid? If that's the case, I see user 64 followed by user 67 without 66. But then I see user 66 in test.txt. Apparently that user does not have any short-term or long-term click history so shouldn't it be removed from the set?</p>\n<p>&nbsp;</p>\n<p>This is user 66 in the test.txt:</p>\n<p>33&nbsp;&nbsp; &nbsp;34573642&nbsp;&nbsp; &nbsp;M&nbsp;&nbsp; &nbsp;29&nbsp;&nbsp; &nbsp;66</p>\n<p>34&nbsp;&nbsp; &nbsp;34573642&nbsp;&nbsp; &nbsp;0&nbsp;&nbsp; &nbsp;Q&nbsp;&nbsp; &nbsp;0&nbsp;&nbsp; &nbsp;8723129&nbsp;&nbsp; &nbsp;3000365,2482577,3133129&nbsp;&nbsp; &nbsp;43222359,3802407&nbsp;&nbsp; &nbsp;39999644,3596990&nbsp;&nbsp; &nbsp;44638858,3874577&nbsp;&nbsp; &nbsp;40789531,3640951&nbsp;&nbsp; &nbsp;17618621,1862061&nbsp;&nbsp; &nbsp;21906406,2251977&nbsp;&nbsp; &nbsp;26058104,2597528&nbsp;&nbsp; &nbsp;40112490,3602207&nbsp;&nbsp; &nbsp;45139074,3906094&nbsp;&nbsp; &nbsp;13949939,1423442</p>\n<p>35&nbsp;&nbsp; &nbsp;34573642&nbsp;&nbsp; &nbsp;1592&nbsp;&nbsp; &nbsp;T&nbsp;&nbsp; &nbsp;1&nbsp;&nbsp; &nbsp;13028695&nbsp;&nbsp; &nbsp;3601218,2980919&nbsp;&nbsp; &nbsp;57002736,4510996&nbsp;&nbsp; &nbsp;23958325,2393729&nbsp;&nbsp; &nbsp;71070782,5287734&nbsp;&nbsp; &nbsp;43211360,3801521&nbsp;&nbsp; &nbsp;21381898,2194256&nbsp;&nbsp; &nbsp;71070801,5287737&nbsp;&nbsp; &nbsp;21381923,2194262&nbsp;&nbsp; &nbsp;71070834,5287744&nbsp;&nbsp; &nbsp;71070769,5287733&nbsp;&nbsp; &nbsp;32447550,3151611</p>\n<p>&nbsp;</p>",
  "messages": [
    {
      "id": "36357",
      "postDate": "12/19/2013 06:44:30",
      "content": "<p>I assume train.txt is ordered by uid? If that's the case, I see user 64 followed by user 67 without 66. But then I see user 66 in test.txt. Apparently that user does not have any short-term or long-term click history so shouldn't it be removed from the set?</p>\n<p>&nbsp;</p>\n<p>This is user 66 in the test.txt:</p>\n<p>33&nbsp;&nbsp; &nbsp;34573642&nbsp;&nbsp; &nbsp;M&nbsp;&nbsp; &nbsp;29&nbsp;&nbsp; &nbsp;66</p>\n<p>34&nbsp;&nbsp; &nbsp;34573642&nbsp;&nbsp; &nbsp;0&nbsp;&nbsp; &nbsp;Q&nbsp;&nbsp; &nbsp;0&nbsp;&nbsp; &nbsp;8723129&nbsp;&nbsp; &nbsp;3000365,2482577,3133129&nbsp;&nbsp; &nbsp;43222359,3802407&nbsp;&nbsp; &nbsp;39999644,3596990&nbsp;&nbsp; &nbsp;44638858,3874577&nbsp;&nbsp; &nbsp;40789531,3640951&nbsp;&nbsp; &nbsp;17618621,1862061&nbsp;&nbsp; &nbsp;21906406,2251977&nbsp;&nbsp; &nbsp;26058104,2597528&nbsp;&nbsp; &nbsp;40112490,3602207&nbsp;&nbsp; &nbsp;45139074,3906094&nbsp;&nbsp; &nbsp;13949939,1423442</p>\n<p>35&nbsp;&nbsp; &nbsp;34573642&nbsp;&nbsp; &nbsp;1592&nbsp;&nbsp; &nbsp;T&nbsp;&nbsp; &nbsp;1&nbsp;&nbsp; &nbsp;13028695&nbsp;&nbsp; &nbsp;3601218,2980919&nbsp;&nbsp; &nbsp;57002736,4510996&nbsp;&nbsp; &nbsp;23958325,2393729&nbsp;&nbsp; &nbsp;71070782,5287734&nbsp;&nbsp; &nbsp;43211360,3801521&nbsp;&nbsp; &nbsp;21381898,2194256&nbsp;&nbsp; &nbsp;71070801,5287737&nbsp;&nbsp; &nbsp;21381923,2194262&nbsp;&nbsp; &nbsp;71070834,5287744&nbsp;&nbsp; &nbsp;71070769,5287733&nbsp;&nbsp; &nbsp;32447550,3151611</p>\n<p>&nbsp;</p>",
      "rawMarkdown": "",
      "votes": null
    },
    {
      "id": "36358",
      "postDate": "12/19/2013 07:31:14",
      "content": "<p>There are two queries in this test session. Even though the first query was not clicked, it still forms the short-term context and can possibly provide some useful information to personalise the test query.</p>",
      "rawMarkdown": "",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 36358,
      "author_name": "eugene1751",
      "author_url": "",
      "post_date": "12/19/2013 07:31:14",
      "content": "<p>There are two queries in this test session. Even though the first query was not clicked, it still forms the short-term context and can possibly provide some useful information to personalise the test query.</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "36357": "",
    "36358": ""
  },
  "source": "meta"
}