{
  "id": 254184,
  "title": "Why only April as validation?",
  "url": "/competitions/mlb-player-digital-engagement-forecasting/discussion/254184",
  "author_name": "",
  "post_date": "2021-07-20T13:41:36.057350100Z",
  "votes": 3,
  "comment_count": 7,
  "views": 0,
  "content": "<p>Why do most people use only April as \"holdout\" (validation set)? <br>\nIs it because test set also covers one month (and the future test set will also), that the model could learn to predict a similar range? Or there is the other reason? <br>\nI mean the length of the period itself, that it must include the latest data is obvious 😄</p>\n<p>Greetings and good luck in competition!</p>",
  "messages": [
    {
      "id": "1394648",
      "postDate": "07/20/2021 13:41:36",
      "content": "<p>Why do most people use only April as \"holdout\" (validation set)? <br>\nIs it because test set also covers one month (and the future test set will also), that the model could learn to predict a similar range? Or there is the other reason? <br>\nI mean the length of the period itself, that it must include the latest data is obvious 😄</p>\n<p>Greetings and good luck in competition!</p>",
      "rawMarkdown": "Why do most people use only April as \"holdout\" (validation set)? \nIs it because test set also covers one month (and the future test set will also), that the model could learn to predict a similar range? Or there is the other reason? \nI mean the length of the period itself, that it must include the latest data is obvious 😄\n\nGreetings and good luck in competition!",
      "votes": null
    },
    {
      "id": "1394808",
      "postDate": "07/20/2021 16:18:51",
      "content": "<p>I think it's probably because April is the closest month with the months being tested, say, May, June, etc. Please point out if mu understanding is wrong.</p>",
      "rawMarkdown": "I think it's probably because April is the closest month with the months being tested, say, May, June, etc. Please point out if mu understanding is wrong.",
      "votes": null
    },
    {
      "id": "1394830",
      "postDate": "07/20/2021 16:51:35",
      "content": "<p>There was some discussion on validation strategies here:</p>\n<p><a href=\"https://www.kaggle.com/c/mlb-player-digital-engagement-forecasting/discussion/248782\" target=\"_blank\">https://www.kaggle.com/c/mlb-player-digital-engagement-forecasting/discussion/248782</a></p>\n<p>I'm subjectively using April because it's the closest in time to the private test set</p>",
      "rawMarkdown": "There was some discussion on validation strategies here:\n\nhttps://www.kaggle.com/c/mlb-player-digital-engagement-forecasting/discussion/248782\n\nI'm subjectively using April because it's the closest in time to the private test set",
      "votes": null
    },
    {
      "id": "1395600",
      "postDate": "07/21/2021 11:17:36",
      "content": "<p><a href=\"https://www.kaggle.com/zacchaeus\" target=\"_blank\">@zacchaeus</a> It's obvious, I mean why only April and not (for example) March and April, why such a short period? 😄</p>",
      "rawMarkdown": "zacchaeus It's obvious, I mean why only April and not (for example) March and April, why such a short period? 😄",
      "votes": null
    },
    {
      "id": "1395602",
      "postDate": "07/21/2021 11:18:06",
      "content": "<p><a href=\"https://www.kaggle.com/redfoongus\" target=\"_blank\">@redfoongus</a> It's obvious, I mean why only April and not (for example) March and April, why such a short period? 😄</p>",
      "rawMarkdown": "redfoongus It's obvious, I mean why only April and not (for example) March and April, why such a short period? 😄",
      "votes": null
    },
    {
      "id": "1395744",
      "postDate": "07/21/2021 13:58:29",
      "content": "<p><a href=\"https://www.kaggle.com/michau96\" target=\"_blank\">@michau96</a> You can use any months you like.</p>",
      "rawMarkdown": "michau96 You can use any months you like.",
      "votes": null
    },
    {
      "id": "1396018",
      "postDate": "07/21/2021 17:39:17",
      "content": "<p><a href=\"https://www.kaggle.com/michau96\" target=\"_blank\">@michau96</a>  My reasoning was that March is spring training, while April is regular season, so I chose not to lump the two together</p>",
      "rawMarkdown": "michau96  My reasoning was that March is spring training, while April is regular season, so I chose not to lump the two together",
      "votes": null
    },
    {
      "id": "1396045",
      "postDate": "07/21/2021 17:48:04",
      "content": "<p><a href=\"https://www.kaggle.com/redfoongus\" target=\"_blank\">@redfoongus</a> Ok, that's make sense - thank you!</p>",
      "rawMarkdown": "redfoongus Ok, that's make sense - thank you!",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 1394808,
      "author_name": "zacchaeus",
      "author_url": "",
      "post_date": "07/20/2021 16:18:51",
      "content": "<p>I think it's probably because April is the closest month with the months being tested, say, May, June, etc. Please point out if mu understanding is wrong.</p>",
      "votes": null,
      "replies": [
        {
          "id": 1395600,
          "author_name": "michau96",
          "author_url": "",
          "post_date": "07/21/2021 11:17:36",
          "content": "<p><a href=\"https://www.kaggle.com/zacchaeus\" target=\"_blank\">@zacchaeus</a> It's obvious, I mean why only April and not (for example) March and April, why such a short period? 😄</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 1395744,
          "author_name": "zacchaeus",
          "author_url": "",
          "post_date": "07/21/2021 13:58:29",
          "content": "<p><a href=\"https://www.kaggle.com/michau96\" target=\"_blank\">@michau96</a> You can use any months you like.</p>",
          "votes": null,
          "replies": []
        }
      ]
    },
    {
      "id": 1394830,
      "author_name": "redfoongus",
      "author_url": "",
      "post_date": "07/20/2021 16:51:35",
      "content": "<p>There was some discussion on validation strategies here:</p>\n<p><a href=\"https://www.kaggle.com/c/mlb-player-digital-engagement-forecasting/discussion/248782\" target=\"_blank\">https://www.kaggle.com/c/mlb-player-digital-engagement-forecasting/discussion/248782</a></p>\n<p>I'm subjectively using April because it's the closest in time to the private test set</p>",
      "votes": null,
      "replies": [
        {
          "id": 1395602,
          "author_name": "michau96",
          "author_url": "",
          "post_date": "07/21/2021 11:18:06",
          "content": "<p><a href=\"https://www.kaggle.com/redfoongus\" target=\"_blank\">@redfoongus</a> It's obvious, I mean why only April and not (for example) March and April, why such a short period? 😄</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 1396018,
          "author_name": "redfoongus",
          "author_url": "",
          "post_date": "07/21/2021 17:39:17",
          "content": "<p><a href=\"https://www.kaggle.com/michau96\" target=\"_blank\">@michau96</a>  My reasoning was that March is spring training, while April is regular season, so I chose not to lump the two together</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 1396045,
          "author_name": "michau96",
          "author_url": "",
          "post_date": "07/21/2021 17:48:04",
          "content": "<p><a href=\"https://www.kaggle.com/redfoongus\" target=\"_blank\">@redfoongus</a> Ok, that's make sense - thank you!</p>",
          "votes": null,
          "replies": []
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "1394648": "Why do most people use only April as \"holdout\" (validation set)? \nIs it because test set also covers one month (and the future test set will also), that the model could learn to predict a similar range? Or there is the other reason? \nI mean the length of the period itself, that it must include the latest data is obvious 😄\n\nGreetings and good luck in competition!",
    "1394808": "I think it's probably because April is the closest month with the months being tested, say, May, June, etc. Please point out if mu understanding is wrong.",
    "1394830": "There was some discussion on validation strategies here:\n\nhttps://www.kaggle.com/c/mlb-player-digital-engagement-forecasting/discussion/248782\n\nI'm subjectively using April because it's the closest in time to the private test set",
    "1395600": "zacchaeus It's obvious, I mean why only April and not (for example) March and April, why such a short period? 😄",
    "1395602": "redfoongus It's obvious, I mean why only April and not (for example) March and April, why such a short period? 😄",
    "1395744": "michau96 You can use any months you like.",
    "1396018": "michau96  My reasoning was that March is spring training, while April is regular season, so I chose not to lump the two together",
    "1396045": "redfoongus Ok, that's make sense - thank you!"
  },
  "source": "meta"
}