{
  "id": 190455,
  "title": "Does content_type_id correspond to questions and lectures?",
  "url": "/competitions/riiid-test-answer-prediction/discussion/190455",
  "author_name": "",
  "post_date": "2020-10-11T21:38:28.516575500Z",
  "votes": null,
  "comment_count": 2,
  "views": 0,
  "content": "<p>According to Data Description, <code>content_type_id==0</code> corresponds to questions, so I supposed that the result of following code is 0, but 158 returned actually.<br>\n<code>len(set(train[train['content_type_id'] == 0]['content_id']) &amp; set(lectures['lecture_id']))</code></p>\n<p>Similarly, the result of following was 156.<br>\n<code>len(set(train[train['content_type_id'] == 1]['content_id']) &amp; set(questions['question_id']))</code></p>\n<p>Does <code>content_type_id</code> correspond to questions and lectures?🤔</p>",
  "messages": [
    {
      "id": "1046650",
      "postDate": "10/11/2020 21:38:28",
      "content": "<p>According to Data Description, <code>content_type_id==0</code> corresponds to questions, so I supposed that the result of following code is 0, but 158 returned actually.<br>\n<code>len(set(train[train['content_type_id'] == 0]['content_id']) &amp; set(lectures['lecture_id']))</code></p>\n<p>Similarly, the result of following was 156.<br>\n<code>len(set(train[train['content_type_id'] == 1]['content_id']) &amp; set(questions['question_id']))</code></p>\n<p>Does <code>content_type_id</code> correspond to questions and lectures?🤔</p>",
      "rawMarkdown": "According to Data Description, `content_type_id==0` corresponds to questions, so I supposed that the result of following code is 0, but 158 returned actually.\n`len(set(train[train['content_type_id'] == 0]['content_id']) & set(lectures['lecture_id']))`\n\nSimilarly, the result of following was 156.\n`len(set(train[train['content_type_id'] == 1]['content_id']) & set(questions['question_id']))`\n\nDoes `content_type_id` correspond to questions and lectures?🤔",
      "votes": null
    },
    {
      "id": "1046659",
      "postDate": "10/11/2020 21:43:24",
      "content": "<p>Be careful, set(lectures['lecture_id'])) and set(questions['question_id'])) are not disjoint sets.</p>",
      "rawMarkdown": "Be careful, set(lectures['lecture_id'])) and set(questions['question_id'])) are not disjoint sets.",
      "votes": null
    },
    {
      "id": "1046716",
      "postDate": "10/11/2020 23:36:56",
      "content": "<p>Thanks! I didn't realize that.<br>\nAs you say, 158 duplicate contents found by <code>set(questions['question_id']) &amp; set(lectures['lecture_id'])</code>.</p>",
      "rawMarkdown": "Thanks! I didn't realize that.\nAs you say, 158 duplicate contents found by `set(questions['question_id']) & set(lectures['lecture_id'])`.",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 1046659,
      "author_name": "yihdarshieh",
      "author_url": "",
      "post_date": "10/11/2020 21:43:24",
      "content": "<p>Be careful, set(lectures['lecture_id'])) and set(questions['question_id'])) are not disjoint sets.</p>",
      "votes": null,
      "replies": [
        {
          "id": 1046716,
          "author_name": "hrappuccino",
          "author_url": "",
          "post_date": "10/11/2020 23:36:56",
          "content": "<p>Thanks! I didn't realize that.<br>\nAs you say, 158 duplicate contents found by <code>set(questions['question_id']) &amp; set(lectures['lecture_id'])</code>.</p>",
          "votes": null,
          "replies": []
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "1046650": "According to Data Description, `content_type_id==0` corresponds to questions, so I supposed that the result of following code is 0, but 158 returned actually.\n`len(set(train[train['content_type_id'] == 0]['content_id']) & set(lectures['lecture_id']))`\n\nSimilarly, the result of following was 156.\n`len(set(train[train['content_type_id'] == 1]['content_id']) & set(questions['question_id']))`\n\nDoes `content_type_id` correspond to questions and lectures?🤔",
    "1046659": "Be careful, set(lectures['lecture_id'])) and set(questions['question_id'])) are not disjoint sets.",
    "1046716": "Thanks! I didn't realize that.\nAs you say, 158 duplicate contents found by `set(questions['question_id']) & set(lectures['lecture_id'])`."
  },
  "source": "meta"
}