{
  "id": 580064,
  "title": "Clarification for the unknown class",
  "url": "/competitions/forams-classification-2025/discussion/580064",
  "author_name": "",
  "post_date": "2025-05-22T08:10:43.928005900Z",
  "votes": 1,
  "comment_count": 2,
  "views": 0,
  "content": "<blockquote>\n  <p>The unknown class should be used for broken fragments of forams and other unclassifiable objects, which may occur in unlabeled volumes.</p>\n</blockquote>\n<p>How damaged does a fragment need to be to be considered unclassifiable? And is a foram with holes considered a fragment?</p>",
  "messages": [
    {
      "id": "3207085",
      "postDate": "05/22/2025 08:10:43",
      "content": "<blockquote>\n  <p>The unknown class should be used for broken fragments of forams and other unclassifiable objects, which may occur in unlabeled volumes.</p>\n</blockquote>\n<p>How damaged does a fragment need to be to be considered unclassifiable? And is a foram with holes considered a fragment?</p>",
      "rawMarkdown": "> The unknown class should be used for broken fragments of forams and other unclassifiable objects, which may occur in unlabeled volumes.\n\nHow damaged does a fragment need to be to be considered unclassifiable? And is a foram with holes considered a fragment?",
      "votes": null
    },
    {
      "id": "3208046",
      "postDate": "05/23/2025 15:47:08",
      "content": "<p>I believe that damage and fragmentation will be correlated with the degree of certainty and the probability of classification that the model will infer.</p>\n<p>I tried an approach with a classification threshold. If the model/ensemble could not identify which class the volume belonged to with the degree of certainty above the established threshold then it is classified as unknown. This way it was possible to filter several examples of fragments.</p>",
      "rawMarkdown": "I believe that damage and fragmentation will be correlated with the degree of certainty and the probability of classification that the model will infer.\n\nI tried an approach with a classification threshold. If the model/ensemble could not identify which class the volume belonged to with the degree of certainty above the established threshold then it is classified as unknown. This way it was possible to filter several examples of fragments.",
      "votes": null
    },
    {
      "id": "3208333",
      "postDate": "05/23/2025 22:50:19",
      "content": "<p>The forams that are considered a fragment will be approximately half of a foram or less.</p>",
      "rawMarkdown": "The forams that are considered a fragment will be approximately half of a foram or less.",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 3208046,
      "author_name": "franklingois",
      "author_url": "",
      "post_date": "05/23/2025 15:47:08",
      "content": "<p>I believe that damage and fragmentation will be correlated with the degree of certainty and the probability of classification that the model will infer.</p>\n<p>I tried an approach with a classification threshold. If the model/ensemble could not identify which class the volume belonged to with the degree of certainty above the established threshold then it is classified as unknown. This way it was possible to filter several examples of fragments.</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 3208333,
      "author_name": "qimcenter",
      "author_url": "",
      "post_date": "05/23/2025 22:50:19",
      "content": "<p>The forams that are considered a fragment will be approximately half of a foram or less.</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "3207085": "> The unknown class should be used for broken fragments of forams and other unclassifiable objects, which may occur in unlabeled volumes.\n\nHow damaged does a fragment need to be to be considered unclassifiable? And is a foram with holes considered a fragment?",
    "3208046": "I believe that damage and fragmentation will be correlated with the degree of certainty and the probability of classification that the model will infer.\n\nI tried an approach with a classification threshold. If the model/ensemble could not identify which class the volume belonged to with the degree of certainty above the established threshold then it is classified as unknown. This way it was possible to filter several examples of fragments.",
    "3208333": "The forams that are considered a fragment will be approximately half of a foram or less."
  },
  "source": "meta"
}