{
  "id": 193235,
  "title": "Is the `history_positions` backward in time?",
  "url": "/competitions/lyft-motion-prediction-autonomous-vehicles/discussion/193235",
  "author_name": "Louis Yang",
  "post_date": "2020-10-26T02:53:30.116000",
  "votes": 5,
  "comment_count": 2,
  "views": 0,
  "content": "<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F1010129%2Fd8df9bf8f0f9b1ae6539025afe1bfb68%2FSharedScreenshot2.jpg?generation=1603680472218441&amp;alt=media\" alt=\"\"><br>\nI am late to the competition so I am still exploring the data. But I found that the <code>history_positions</code> from the dataset is actually backward in time. So higher row number corresponding to the older history of the agent.<br>\nAlso, the origin of the agent seems to always be set to the row=0 of the <code>history_positions</code>.  Is my understanding correct?</p>",
  "messages": [
    {
      "id": 1060289,
      "postDate": "2020-10-26T02:53:30.117Z",
      "content": "<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F1010129%2Fd8df9bf8f0f9b1ae6539025afe1bfb68%2FSharedScreenshot2.jpg?generation=1603680472218441&amp;alt=media\" alt=\"\"><br>\nI am late to the competition so I am still exploring the data. But I found that the <code>history_positions</code> from the dataset is actually backward in time. So higher row number corresponding to the older history of the agent.<br>\nAlso, the origin of the agent seems to always be set to the row=0 of the <code>history_positions</code>.  Is my understanding correct?</p>",
      "rawMarkdown": "![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F1010129%2Fd8df9bf8f0f9b1ae6539025afe1bfb68%2FSharedScreenshot2.jpg?generation=1603680472218441&alt=media)\nI am late to the competition so I am still exploring the data. But I found that the `history_positions` from the dataset is actually backward in time. So higher row number corresponding to the older history of the agent.\nAlso, the origin of the agent seems to always be set to the row=0 of the `history_positions`.  Is my understanding correct?",
      "votes": 5
    },
    {
      "id": 1060406,
      "postDate": "2020-10-26T06:57:19.813Z",
      "content": "<p>yes, correctly interpreted</p>",
      "rawMarkdown": "yes, correctly interpreted",
      "votes": 3
    },
    {
      "id": 1061324,
      "postDate": "2020-10-27T00:08:09.930Z",
      "rawMarkdown": "",
      "isDeleted": true
    }
  ],
  "comments": [
    {
      "id": 1060406,
      "author_name": "Pascal Pfeiffer",
      "author_url": "",
      "post_date": "2020-10-26T06:57:19.813000",
      "content": "<p>yes, correctly interpreted</p>",
      "votes": 3,
      "replies": []
    },
    {
      "id": 1061324,
      "author_name": "",
      "author_url": "",
      "post_date": "2020-10-27T00:08:09.930000",
      "content": "",
      "votes": 0,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "1060289": "![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F1010129%2Fd8df9bf8f0f9b1ae6539025afe1bfb68%2FSharedScreenshot2.jpg?generation=1603680472218441&alt=media)\nI am late to the competition so I am still exploring the data. But I found that the `history_positions` from the dataset is actually backward in time. So higher row number corresponding to the older history of the agent.\nAlso, the origin of the agent seems to always be set to the row=0 of the `history_positions`.  Is my understanding correct?",
    "1060406": "yes, correctly interpreted",
    "1061324": ""
  }
}