{
  "id": 109197,
  "title": "What happens when the vehicles look opposite direction",
  "url": "/competitions/3d-object-detection-for-autonomous-vehicles/discussion/109197",
  "author_name": "",
  "post_date": "2019-09-17T11:44:32.436121600Z",
  "votes": 6,
  "comment_count": 2,
  "views": 0,
  "content": "<p>What happens when the vehicles (in our submission) look opposite direction ?</p>\n\n<p>I confirmed the evaluation metric of this competition is based on IoU.\nSince IoU just comes from the intersection and the union between two bounding volumes, <code>yaw + math.pi</code> makes same LB score ?</p>\n\n<p>If the directions of cars considered, how are they dealt with ?</p>",
  "messages": [
    {
      "id": "628474",
      "postDate": "09/17/2019 11:44:32",
      "content": "<p>What happens when the vehicles (in our submission) look opposite direction ?</p>\n\n<p>I confirmed the evaluation metric of this competition is based on IoU.\nSince IoU just comes from the intersection and the union between two bounding volumes, <code>yaw + math.pi</code> makes same LB score ?</p>\n\n<p>If the directions of cars considered, how are they dealt with ?</p>",
      "rawMarkdown": "What happens when the vehicles (in our submission) look opposite direction ?\n\nI confirmed the evaluation metric of this competition is based on IoU.\nSince IoU just comes from the intersection and the union between two bounding volumes, `yaw + math.pi` makes same LB score ?\n\nIf the directions of cars considered, how are they dealt with ?",
      "votes": null
    },
    {
      "id": "628871",
      "postDate": "09/18/2019 04:14:37",
      "content": "<p>The metric is based on a pure IOU. </p>\n\n<p>The metric value for a car moving in one direction and the car that moves in the opposite but occupies the same space will be the same.</p>",
      "rawMarkdown": "The metric is based on a pure IOU. \n\nThe metric value for a car moving in one direction and the car that moves in the opposite but occupies the same space will be the same.",
      "votes": null
    },
    {
      "id": "629202",
      "postDate": "09/18/2019 13:52:45",
      "content": "<p>Thank you for the clarification.</p>",
      "rawMarkdown": "Thank you for the clarification.",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 628871,
      "author_name": "iglovikov",
      "author_url": "",
      "post_date": "09/18/2019 04:14:37",
      "content": "<p>The metric is based on a pure IOU. </p>\n\n<p>The metric value for a car moving in one direction and the car that moves in the opposite but occupies the same space will be the same.</p>",
      "votes": null,
      "replies": [
        {
          "id": 629202,
          "author_name": "toshik",
          "author_url": "",
          "post_date": "09/18/2019 13:52:45",
          "content": "<p>Thank you for the clarification.</p>",
          "votes": null,
          "replies": []
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "628474": "What happens when the vehicles (in our submission) look opposite direction ?\n\nI confirmed the evaluation metric of this competition is based on IoU.\nSince IoU just comes from the intersection and the union between two bounding volumes, `yaw + math.pi` makes same LB score ?\n\nIf the directions of cars considered, how are they dealt with ?",
    "628871": "The metric is based on a pure IOU. \n\nThe metric value for a car moving in one direction and the car that moves in the opposite but occupies the same space will be the same.",
    "629202": "Thank you for the clarification."
  },
  "source": "meta"
}