{
  "id": 201928,
  "title": "For creating model, should features like user mean be used?",
  "url": "/competitions/riiid-test-answer-prediction/discussion/201928",
  "author_name": "",
  "post_date": "2020-12-07T10:39:34.830203100Z",
  "votes": null,
  "comment_count": 3,
  "views": 0,
  "content": "<p>The users in Training and Test datasets are disjoint sets. The test dataset does not have answered correctly feature. So For creating model, should features like user mean be used?</p>",
  "messages": [
    {
      "id": "1104894",
      "postDate": "12/07/2020 10:39:34",
      "content": "<p>The users in Training and Test datasets are disjoint sets. The test dataset does not have answered correctly feature. So For creating model, should features like user mean be used?</p>",
      "rawMarkdown": "The users in Training and Test datasets are disjoint sets. The test dataset does not have answered correctly feature. So For creating model, should features like user mean be used?",
      "votes": null
    },
    {
      "id": "1104916",
      "postDate": "12/07/2020 11:13:36",
      "content": "<p>You can obtain <code>answered_correctly</code> feature by using a column <code>prior_group_answers_correct</code> in test set.</p>",
      "rawMarkdown": "You can obtain `answered_correctly` feature by using a column `prior_group_answers_correct` in test set.",
      "votes": null
    },
    {
      "id": "1104920",
      "postDate": "12/07/2020 11:16:57",
      "content": "<p>Thank you.</p>",
      "rawMarkdown": "Thank you.",
      "votes": null
    },
    {
      "id": "1105249",
      "postDate": "12/07/2020 17:05:54",
      "content": "<p>another choice is set the value -1 for new user in the testset, so does validset.</p>",
      "rawMarkdown": "another choice is set the value -1 for new user in the testset, so does validset.",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 1104916,
      "author_name": "mamasinkgs",
      "author_url": "",
      "post_date": "12/07/2020 11:13:36",
      "content": "<p>You can obtain <code>answered_correctly</code> feature by using a column <code>prior_group_answers_correct</code> in test set.</p>",
      "votes": null,
      "replies": [
        {
          "id": 1104920,
          "author_name": "narayana2020",
          "author_url": "",
          "post_date": "12/07/2020 11:16:57",
          "content": "<p>Thank you.</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 1105249,
          "author_name": "biubiug",
          "author_url": "",
          "post_date": "12/07/2020 17:05:54",
          "content": "<p>another choice is set the value -1 for new user in the testset, so does validset.</p>",
          "votes": null,
          "replies": []
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "1104894": "The users in Training and Test datasets are disjoint sets. The test dataset does not have answered correctly feature. So For creating model, should features like user mean be used?",
    "1104916": "You can obtain `answered_correctly` feature by using a column `prior_group_answers_correct` in test set.",
    "1104920": "Thank you.",
    "1105249": "another choice is set the value -1 for new user in the testset, so does validset."
  },
  "source": "meta"
}