{
  "id": 18007,
  "title": "What are P0,P1,..., P599 in sample_submission_validate.csv mean?",
  "url": "/competitions/second-annual-data-science-bowl/discussion/18007",
  "author_name": "",
  "post_date": "2015-12-18T09:39:31.573Z",
  "votes": 1,
  "comment_count": 3,
  "views": 994,
  "content": "<p>In the train.csv, I have only seen 2 labels: Systole and Diastole. What are the meaning of P0,P1,...,P599 in submission file? Thank you very much!</p>",
  "messages": [
    {
      "id": "101986",
      "postDate": "12/18/2015 09:39:31",
      "content": "<p>In the train.csv, I have only seen 2 labels: Systole and Diastole. What are the meaning of P0,P1,...,P599 in submission file? Thank you very much!</p>",
      "rawMarkdown": "In the train.csv, I have only seen 2 labels: Systole and Diastole. What are the meaning of P0,P1,...,P599 in submission file? Thank you very much!",
      "votes": null
    },
    {
      "id": "101995",
      "postDate": "12/18/2015 12:18:01",
      "content": "<p>P_i means the cumulative probability that the volume is less or equal to i mL.  </p>",
      "rawMarkdown": "P_i means the cumulative probability that the volume is less or equal to i mL.",
      "votes": null
    },
    {
      "id": "103548",
      "postDate": "01/04/2016 08:36:28",
      "content": "<p>[quote=avijit dasgupta;101995]</p>\n\n<p>P_i means the cumulative probability that the volume is less or equal to i mL.  </p>\n\n<p>[/quote]</p>\n\n<p>What probability is meant? probability is defined for randomized cases? What is random here. We have MRI images of about 12 slice in 30 time frames. And as I understood, we need to detect the counters of the left ventricle on every image, calculate its 30 volumes for every of 30 moments. And then get its maximum and minimum values.\nAs I see there are also several tutorials on how to detect the counters and get the volumes.</p>\n\n<p>So please clarify what is the probability about?</p>",
      "rawMarkdown": "[quote=avijit dasgupta;101995]\r\n\r\nP_i means the cumulative probability that the volume is less or equal to i mL.  \r\n\r\n[/quote]\r\n\r\nWhat probability is meant? probability is defined for randomized cases? What is random here. We have MRI images of about 12 slice in 30 time frames. And as I understood, we need to detect the counters of the left ventricle on every image, calculate its 30 volumes for every of 30 moments. And then get its maximum and minimum values.\r\nAs I see there are also several tutorials on how to detect the counters and get the volumes.\r\n\r\nSo please clarify what is the probability about?",
      "votes": null
    },
    {
      "id": "103617",
      "postDate": "01/04/2016 20:17:24",
      "content": "<p>Kanan, let's say you are certain that case1 systole has a volume off 250ml, then: p0=0,p1=0,...,p249=0,p250=1,p251=1,...,p599=1 would be your submission for that case.</p>\n\n<p>(In this competition, I think we all agree that p0=0 and p599=1 for all cases.)</p>\n\n<p>Question: How sure can you be that p250=1 ?</p>\n\n<p>Is it that since the script comes up with this volume, that it MUST be correct? </p>\n\n<p>Find reasons to express some doubt. </p>\n\n<p>Perhaps you'll find that you <em>really</em> think that p250=.9 </p>",
      "rawMarkdown": "Kanan, let's say you are certain that case1 systole has a volume off 250ml, then: p0=0,p1=0,...,p249=0,p250=1,p251=1,...,p599=1 would be your submission for that case.\r\n\r\n(In this competition, I think we all agree that p0=0 and p599=1 for all cases.)\r\n\r\nQuestion: How sure can you be that p250=1 ?\r\n\r\nIs it that since the script comes up with this volume, that it MUST be correct? \r\n\r\nFind reasons to express some doubt. \r\n\r\nPerhaps you'll find that you *really* think that p250=.9",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 101995,
      "author_name": "avi9999",
      "author_url": "",
      "post_date": "12/18/2015 12:18:01",
      "content": "<p>P_i means the cumulative probability that the volume is less or equal to i mL.  </p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 103548,
      "author_name": "kananmammadli",
      "author_url": "",
      "post_date": "01/04/2016 08:36:28",
      "content": "<p>[quote=avijit dasgupta;101995]</p>\n\n<p>P_i means the cumulative probability that the volume is less or equal to i mL.  </p>\n\n<p>[/quote]</p>\n\n<p>What probability is meant? probability is defined for randomized cases? What is random here. We have MRI images of about 12 slice in 30 time frames. And as I understood, we need to detect the counters of the left ventricle on every image, calculate its 30 volumes for every of 30 moments. And then get its maximum and minimum values.\nAs I see there are also several tutorials on how to detect the counters and get the volumes.</p>\n\n<p>So please clarify what is the probability about?</p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 103617,
      "author_name": "metalogical",
      "author_url": "",
      "post_date": "01/04/2016 20:17:24",
      "content": "<p>Kanan, let's say you are certain that case1 systole has a volume off 250ml, then: p0=0,p1=0,...,p249=0,p250=1,p251=1,...,p599=1 would be your submission for that case.</p>\n\n<p>(In this competition, I think we all agree that p0=0 and p599=1 for all cases.)</p>\n\n<p>Question: How sure can you be that p250=1 ?</p>\n\n<p>Is it that since the script comes up with this volume, that it MUST be correct? </p>\n\n<p>Find reasons to express some doubt. </p>\n\n<p>Perhaps you'll find that you <em>really</em> think that p250=.9 </p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "101986": "In the train.csv, I have only seen 2 labels: Systole and Diastole. What are the meaning of P0,P1,...,P599 in submission file? Thank you very much!",
    "101995": "P_i means the cumulative probability that the volume is less or equal to i mL.",
    "103548": "[quote=avijit dasgupta;101995]\r\n\r\nP_i means the cumulative probability that the volume is less or equal to i mL.  \r\n\r\n[/quote]\r\n\r\nWhat probability is meant? probability is defined for randomized cases? What is random here. We have MRI images of about 12 slice in 30 time frames. And as I understood, we need to detect the counters of the left ventricle on every image, calculate its 30 volumes for every of 30 moments. And then get its maximum and minimum values.\r\nAs I see there are also several tutorials on how to detect the counters and get the volumes.\r\n\r\nSo please clarify what is the probability about?",
    "103617": "Kanan, let's say you are certain that case1 systole has a volume off 250ml, then: p0=0,p1=0,...,p249=0,p250=1,p251=1,...,p599=1 would be your submission for that case.\r\n\r\n(In this competition, I think we all agree that p0=0 and p599=1 for all cases.)\r\n\r\nQuestion: How sure can you be that p250=1 ?\r\n\r\nIs it that since the script comes up with this volume, that it MUST be correct? \r\n\r\nFind reasons to express some doubt. \r\n\r\nPerhaps you'll find that you *really* think that p250=.9"
  },
  "source": "meta"
}