{
  "id": 311673,
  "title": "Is it possible that a customer has 0 article in the submission?",
  "url": "/competitions/h-and-m-personalized-fashion-recommendations/discussion/311673",
  "author_name": "",
  "post_date": "2022-03-08T07:28:07.877193800Z",
  "votes": 2,
  "comment_count": 2,
  "views": 0,
  "content": "<p>I noticed <strong>k</strong> in the evaluation Mean Average Precision @ 12 is from <strong>1</strong> to 12 .<br>\n$$MAP@12 = \\frac{1}{U} \\sum_{u=1}^{U}  \\sum_{k=1}^{min(n,12)} P(k) \\times rel(k)$$<br>\nSo Is it possible that a customer has 0 article in the submission (the customer purchased nothing in future 7 days)? </p>",
  "messages": [
    {
      "id": "1715613",
      "postDate": "03/08/2022 07:28:07",
      "content": "<p>I noticed <strong>k</strong> in the evaluation Mean Average Precision @ 12 is from <strong>1</strong> to 12 .<br>\n$$MAP@12 = \\frac{1}{U} \\sum_{u=1}^{U}  \\sum_{k=1}^{min(n,12)} P(k) \\times rel(k)$$<br>\nSo Is it possible that a customer has 0 article in the submission (the customer purchased nothing in future 7 days)? </p>",
      "rawMarkdown": "I noticed **k** in the evaluation Mean Average Precision @ 12 is from **1** to 12 .\n$$MAP@12 = \\frac{1}{U} \\sum_{u=1}^{U}  \\sum_{k=1}^{min(n,12)} P(k) \\times rel(k)$$\nSo Is it possible that a customer has 0 article in the submission (the customer purchased nothing in future 7 days)?",
      "votes": null
    },
    {
      "id": "1715650",
      "postDate": "03/08/2022 08:06:01",
      "content": "<p>yes it is possible, ans it will be omited </p>\n<p>in the evaluation page: </p>\n<blockquote>\n  <p>Customer that did not make any purchase during test period are excluded from the scoring.</p>\n</blockquote>",
      "rawMarkdown": "yes it is possible, ans it will be omited \n\nin the evaluation page: \n> Customer that did not make any purchase during test period are excluded from the scoring.",
      "votes": null
    },
    {
      "id": "1715672",
      "postDate": "03/08/2022 08:43:04",
      "content": "<p>Thank you!</p>",
      "rawMarkdown": "Thank you!",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 1715650,
      "author_name": "hervind",
      "author_url": "",
      "post_date": "03/08/2022 08:06:01",
      "content": "<p>yes it is possible, ans it will be omited </p>\n<p>in the evaluation page: </p>\n<blockquote>\n  <p>Customer that did not make any purchase during test period are excluded from the scoring.</p>\n</blockquote>",
      "votes": null,
      "replies": [
        {
          "id": 1715672,
          "author_name": "zln1998",
          "author_url": "",
          "post_date": "03/08/2022 08:43:04",
          "content": "<p>Thank you!</p>",
          "votes": null,
          "replies": []
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "1715613": "I noticed **k** in the evaluation Mean Average Precision @ 12 is from **1** to 12 .\n$$MAP@12 = \\frac{1}{U} \\sum_{u=1}^{U}  \\sum_{k=1}^{min(n,12)} P(k) \\times rel(k)$$\nSo Is it possible that a customer has 0 article in the submission (the customer purchased nothing in future 7 days)?",
    "1715650": "yes it is possible, ans it will be omited \n\nin the evaluation page: \n> Customer that did not make any purchase during test period are excluded from the scoring.",
    "1715672": "Thank you!"
  },
  "source": "meta"
}