{
  "id": 222338,
  "title": "Starting point before first imu data?",
  "url": "/competitions/indoor-location-navigation/discussion/222338",
  "author_name": "",
  "post_date": "2021-02-26T12:59:13.588180700Z",
  "votes": 3,
  "comment_count": 1,
  "views": 0,
  "content": "<p>Hi,</p>\n<p>I have found in train data site paths which the timestamp of the starting point is previous to the timestamp of the first record on IMU data, in those cases we would only have wifi/beacon data to predict the starting point? </p>\n<p>thanks</p>",
  "messages": [
    {
      "id": "1219105",
      "postDate": "02/26/2021 12:59:13",
      "content": "<p>Hi,</p>\n<p>I have found in train data site paths which the timestamp of the starting point is previous to the timestamp of the first record on IMU data, in those cases we would only have wifi/beacon data to predict the starting point? </p>\n<p>thanks</p>",
      "rawMarkdown": "Hi,\n\nI have found in train data site paths which the timestamp of the starting point is previous to the timestamp of the first record on IMU data, in those cases we would only have wifi/beacon data to predict the starting point? \n\nthanks",
      "votes": null
    },
    {
      "id": "1231578",
      "postDate": "03/09/2021 04:51:55",
      "content": "<p>Hi <a href=\"https://www.kaggle.com/enric1296\" target=\"_blank\">@enric1296</a>, I guess anyways estimating first position just using IMU data would be difficult as IMU data is body-centric and needs a reference starting point. On the other hand, wifi / beacon data is in global coordinates and so helpful in estimating starting point</p>",
      "rawMarkdown": "Hi @enric1296, I guess anyways estimating first position just using IMU data would be difficult as IMU data is body-centric and needs a reference starting point. On the other hand, wifi / beacon data is in global coordinates and so helpful in estimating starting point",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 1231578,
      "author_name": "suryajrrafl",
      "author_url": "",
      "post_date": "03/09/2021 04:51:55",
      "content": "<p>Hi <a href=\"https://www.kaggle.com/enric1296\" target=\"_blank\">@enric1296</a>, I guess anyways estimating first position just using IMU data would be difficult as IMU data is body-centric and needs a reference starting point. On the other hand, wifi / beacon data is in global coordinates and so helpful in estimating starting point</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "1219105": "Hi,\n\nI have found in train data site paths which the timestamp of the starting point is previous to the timestamp of the first record on IMU data, in those cases we would only have wifi/beacon data to predict the starting point? \n\nthanks",
    "1231578": "Hi @enric1296, I guess anyways estimating first position just using IMU data would be difficult as IMU data is body-centric and needs a reference starting point. On the other hand, wifi / beacon data is in global coordinates and so helpful in estimating starting point"
  },
  "source": "meta"
}