{
  "id": 69931,
  "title": "What Are We Classifying?",
  "url": "/competitions/PLAsTiCC-2018/discussion/69931",
  "author_name": "",
  "post_date": "2018-10-29T03:01:43.948373600Z",
  "votes": 15,
  "comment_count": 4,
  "views": 0,
  "content": "<p>According to the <a href=\"https://www.kaggle.com/michaelapers/the-plasticc-astronomy-starter-kit\">starter kit</a>, we are classifying following objects,</p>\n\n<ol>\n<li>Secular</li>\n<li>Pulsating</li>\n<li>Eruptive Variable Stars </li>\n<li>Tidal Disruption Events</li>\n<li>Kilonovae</li>\n<li>Supernovae of different types ( <a href=\"https://en.wikipedia.org/wiki/Supernova\">including 5 types?</a> )</li>\n<li>Active Galactic Nucleii </li>\n<li>Microlensing Events</li>\n<li>Eclipsing Binaries</li>\n</ol>\n\n<p>So we have 13 types of objects? What else?</p>",
  "messages": [
    {
      "id": "411790",
      "postDate": "10/29/2018 03:01:43",
      "content": "<p>According to the <a href=\"https://www.kaggle.com/michaelapers/the-plasticc-astronomy-starter-kit\">starter kit</a>, we are classifying following objects,</p>\n\n<ol>\n<li>Secular</li>\n<li>Pulsating</li>\n<li>Eruptive Variable Stars </li>\n<li>Tidal Disruption Events</li>\n<li>Kilonovae</li>\n<li>Supernovae of different types ( <a href=\"https://en.wikipedia.org/wiki/Supernova\">including 5 types?</a> )</li>\n<li>Active Galactic Nucleii </li>\n<li>Microlensing Events</li>\n<li>Eclipsing Binaries</li>\n</ol>\n\n<p>So we have 13 types of objects? What else?</p>",
      "rawMarkdown": "According to the [starter kit][1], we are classifying following objects,\n\n1. Secular\n2. Pulsating\n3. Eruptive Variable Stars \n4. Tidal Disruption Events\n5. Kilonovae\n6. Supernovae of different types ( [including 5 types?][2] )\n7. Active Galactic Nucleii \n8. Microlensing Events\n9. Eclipsing Binaries\n\nSo we have 13 types of objects? What else?\n\n  [1]: https://www.kaggle.com/michaelapers/the-plasticc-astronomy-starter-kit\n  [2]: https://en.wikipedia.org/wiki/Supernova",
      "votes": null
    },
    {
      "id": "411846",
      "postDate": "10/29/2018 05:31:06",
      "content": "<p>\"Eruptive Variable Stars\" and \"Tidal Disruption Events\" are different. <br>\nAnd, maybe these website can help you. <br>\n1. <a href=\"http://chandra.harvard.edu/edu/formal/variable_stars/bg_info.html\">http://chandra.harvard.edu/edu/formal/variable_stars/bg_info.html</a> <br>\n2. <a href=\"http://www.atnf.csiro.au/outreach/education/senior/astrophysics/variable_types.html\">http://www.atnf.csiro.au/outreach/education/senior/astrophysics/variable_types.html</a></p>\n\n<p><img src=\"http://chandra.harvard.edu/graphics/edu/formal/variable_stars/classification.jpg\" alt=\"class\"></p>",
      "rawMarkdown": "\"Eruptive Variable Stars\" and \"Tidal Disruption Events\" are different.  \nAnd, maybe these website can help you.  \n1. http://chandra.harvard.edu/edu/formal/variable_stars/bg_info.html  \n2. http://www.atnf.csiro.au/outreach/education/senior/astrophysics/variable_types.html\n\n![class][1]\n\n[1]:http://chandra.harvard.edu/graphics/edu/formal/variable_stars/classification.jpg",
      "votes": null
    },
    {
      "id": "411851",
      "postDate": "10/29/2018 05:39:35",
      "content": "<p>Thank you angus! Also I made a typo and edited!</p>",
      "rawMarkdown": "Thank you angus! Also I made a typo and edited!",
      "votes": null
    },
    {
      "id": "411933",
      "postDate": "10/29/2018 08:37:16",
      "content": "<p>There are 15 categories here, which one is absent from our train data?</p>",
      "rawMarkdown": "There are 15 categories here, which one is absent from our train data?",
      "votes": null
    },
    {
      "id": "412074",
      "postDate": "10/29/2018 14:34:39",
      "content": "<p>@ONODERA  :D <br>\n@CPMP I don't know which kind of event is absent, but we already knew class99 is the object that have never been observed. According to Kernel we knew there are 5 classes are galactic and 9 classes are exgalactic, and no overlap between them (at least in trainset), so you can go wiki to check whether these listed events are inside our galaxy or not. </p>",
      "rawMarkdown": "ONODERA  :D  \n@CPMP I don't know which kind of event is absent, but we already knew class99 is the object that have never been observed. According to Kernel we knew there are 5 classes are galactic and 9 classes are exgalactic, and no overlap between them (at least in trainset), so you can go wiki to check whether these listed events are inside our galaxy or not.",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 411846,
      "author_name": "andrew60909",
      "author_url": "",
      "post_date": "10/29/2018 05:31:06",
      "content": "<p>\"Eruptive Variable Stars\" and \"Tidal Disruption Events\" are different. <br>\nAnd, maybe these website can help you. <br>\n1. <a href=\"http://chandra.harvard.edu/edu/formal/variable_stars/bg_info.html\">http://chandra.harvard.edu/edu/formal/variable_stars/bg_info.html</a> <br>\n2. <a href=\"http://www.atnf.csiro.au/outreach/education/senior/astrophysics/variable_types.html\">http://www.atnf.csiro.au/outreach/education/senior/astrophysics/variable_types.html</a></p>\n\n<p><img src=\"http://chandra.harvard.edu/graphics/edu/formal/variable_stars/classification.jpg\" alt=\"class\"></p>",
      "votes": null,
      "replies": [
        {
          "id": 411851,
          "author_name": "onodera",
          "author_url": "",
          "post_date": "10/29/2018 05:39:35",
          "content": "<p>Thank you angus! Also I made a typo and edited!</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 411933,
          "author_name": "cpmpml",
          "author_url": "",
          "post_date": "10/29/2018 08:37:16",
          "content": "<p>There are 15 categories here, which one is absent from our train data?</p>",
          "votes": null,
          "replies": []
        },
        {
          "id": 412074,
          "author_name": "andrew60909",
          "author_url": "",
          "post_date": "10/29/2018 14:34:39",
          "content": "<p>@ONODERA  :D <br>\n@CPMP I don't know which kind of event is absent, but we already knew class99 is the object that have never been observed. According to Kernel we knew there are 5 classes are galactic and 9 classes are exgalactic, and no overlap between them (at least in trainset), so you can go wiki to check whether these listed events are inside our galaxy or not. </p>",
          "votes": null,
          "replies": []
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "411790": "According to the [starter kit][1], we are classifying following objects,\n\n1. Secular\n2. Pulsating\n3. Eruptive Variable Stars \n4. Tidal Disruption Events\n5. Kilonovae\n6. Supernovae of different types ( [including 5 types?][2] )\n7. Active Galactic Nucleii \n8. Microlensing Events\n9. Eclipsing Binaries\n\nSo we have 13 types of objects? What else?\n\n  [1]: https://www.kaggle.com/michaelapers/the-plasticc-astronomy-starter-kit\n  [2]: https://en.wikipedia.org/wiki/Supernova",
    "411846": "\"Eruptive Variable Stars\" and \"Tidal Disruption Events\" are different.  \nAnd, maybe these website can help you.  \n1. http://chandra.harvard.edu/edu/formal/variable_stars/bg_info.html  \n2. http://www.atnf.csiro.au/outreach/education/senior/astrophysics/variable_types.html\n\n![class][1]\n\n[1]:http://chandra.harvard.edu/graphics/edu/formal/variable_stars/classification.jpg",
    "411851": "Thank you angus! Also I made a typo and edited!",
    "411933": "There are 15 categories here, which one is absent from our train data?",
    "412074": "ONODERA  :D  \n@CPMP I don't know which kind of event is absent, but we already knew class99 is the object that have never been observed. According to Kernel we knew there are 5 classes are galactic and 9 classes are exgalactic, and no overlap between them (at least in trainset), so you can go wiki to check whether these listed events are inside our galaxy or not."
  },
  "source": "meta"
}