{
  "id": 201077,
  "title": "new user in the test set?",
  "url": "/competitions/riiid-test-answer-prediction/discussion/201077",
  "author_name": "",
  "post_date": "2020-12-03T03:14:05.330307900Z",
  "votes": null,
  "comment_count": 7,
  "views": 0,
  "content": "<p>Hi all,</p>\n<p>I have a question about the test set.  Does the test set contain new users which don't appear in the train set?</p>",
  "messages": [
    {
      "id": "1100357",
      "postDate": "12/03/2020 03:14:05",
      "content": "<p>Hi all,</p>\n<p>I have a question about the test set.  Does the test set contain new users which don't appear in the train set?</p>",
      "rawMarkdown": "Hi all,\n\nI have a question about the test set.  Does the test set contain new users which don't appear in the train set?",
      "votes": null
    },
    {
      "id": "1100365",
      "postDate": "12/03/2020 03:23:03",
      "content": "<p>yes,the sample test have one new user</p>",
      "rawMarkdown": "yes,the sample test have one new user",
      "votes": null
    },
    {
      "id": "1100490",
      "postDate": "12/03/2020 05:39:14",
      "content": "<p>Only one new user?</p>",
      "rawMarkdown": "Only one new user?",
      "votes": null
    },
    {
      "id": "1100513",
      "postDate": "12/03/2020 06:16:14",
      "content": "<p>The answer is Yes.<br>\nShould read excellent work by <a href=\"https://www.kaggle.com/yihdarshieh\" target=\"_blank\">@yihdarshieh</a> .</p>\n<p><a href=\"https://www.kaggle.com/yihdarshieh/riiid-verifying-private-test-dataset-properties\" target=\"_blank\">https://www.kaggle.com/yihdarshieh/riiid-verifying-private-test-dataset-properties</a></p>",
      "rawMarkdown": "The answer is Yes.\nShould read excellent work by @yihdarshieh .\n\nhttps://www.kaggle.com/yihdarshieh/riiid-verifying-private-test-dataset-properties",
      "votes": null
    },
    {
      "id": "1100554",
      "postDate": "12/03/2020 06:38:28",
      "content": "<p>new user timestamp is zero,I only find one new user in 108 sample test,user_id 275030867</p>",
      "rawMarkdown": "new user timestamp is zero,I only find one new user in 108 sample test,user_id 275030867",
      "votes": null
    },
    {
      "id": "1100556",
      "postDate": "12/03/2020 06:40:14",
      "content": "<p>There must be a lot of new users throughout the test set。My CV strategy observes that new users may account for a quarter to half the number of users in the test set.</p>",
      "rawMarkdown": "There must be a lot of new users throughout the test set。My CV strategy observes that new users may account for a quarter to half the number of users in the test set.",
      "votes": null
    },
    {
      "id": "1100618",
      "postDate": "12/03/2020 07:40:05",
      "content": "<p>Thanks for sharing it!</p>",
      "rawMarkdown": "Thanks for sharing it!",
      "votes": null
    },
    {
      "id": "1100619",
      "postDate": "12/03/2020 07:40:39",
      "content": "<p>thanks for sharing it.</p>",
      "rawMarkdown": "thanks for sharing it.",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 1100365,
      "author_name": "yangxiaoshuai",
      "author_url": "",
      "post_date": "12/03/2020 03:23:03",
      "content": "<p>yes,the sample test have one new user</p>",
      "votes": null,
      "replies": [
        {
          "id": 1100490,
          "author_name": "calebeverett",
          "author_url": "",
          "post_date": "12/03/2020 05:39:14",
          "content": "<p>Only one new user?</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 1100554,
          "author_name": "yangxiaoshuai",
          "author_url": "",
          "post_date": "12/03/2020 06:38:28",
          "content": "<p>new user timestamp is zero,I only find one new user in 108 sample test,user_id 275030867</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 1100556,
          "author_name": "yangxiaoshuai",
          "author_url": "",
          "post_date": "12/03/2020 06:40:14",
          "content": "<p>There must be a lot of new users throughout the test set。My CV strategy observes that new users may account for a quarter to half the number of users in the test set.</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 1100619,
          "author_name": "jdxyw2004",
          "author_url": "",
          "post_date": "12/03/2020 07:40:39",
          "content": "<p>thanks for sharing it.</p>",
          "votes": null,
          "replies": []
        }
      ]
    },
    {
      "id": 1100513,
      "author_name": "tomooinubushi",
      "author_url": "",
      "post_date": "12/03/2020 06:16:14",
      "content": "<p>The answer is Yes.<br>\nShould read excellent work by <a href=\"https://www.kaggle.com/yihdarshieh\" target=\"_blank\">@yihdarshieh</a> .</p>\n<p><a href=\"https://www.kaggle.com/yihdarshieh/riiid-verifying-private-test-dataset-properties\" target=\"_blank\">https://www.kaggle.com/yihdarshieh/riiid-verifying-private-test-dataset-properties</a></p>",
      "votes": null,
      "replies": [
        {
          "id": 1100618,
          "author_name": "jdxyw2004",
          "author_url": "",
          "post_date": "12/03/2020 07:40:05",
          "content": "<p>Thanks for sharing it!</p>",
          "votes": null,
          "replies": []
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "1100357": "Hi all,\n\nI have a question about the test set.  Does the test set contain new users which don't appear in the train set?",
    "1100365": "yes,the sample test have one new user",
    "1100490": "Only one new user?",
    "1100513": "The answer is Yes.\nShould read excellent work by @yihdarshieh .\n\nhttps://www.kaggle.com/yihdarshieh/riiid-verifying-private-test-dataset-properties",
    "1100554": "new user timestamp is zero,I only find one new user in 108 sample test,user_id 275030867",
    "1100556": "There must be a lot of new users throughout the test set。My CV strategy observes that new users may account for a quarter to half the number of users in the test set.",
    "1100618": "Thanks for sharing it!",
    "1100619": "thanks for sharing it."
  },
  "source": "meta"
}