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I worked on tracking data. Tracking data shows that the two players are in contact with each other when the distance between them is 5.81 yards or 5.31 meters. Could the tracking data be inaccurate?
", "messages": [ { "id": "2125775", "postDate": "02/01/2023 21:25:27", "content": "I worked on tracking data. Tracking data shows that the two players are in contact with each other when the distance between them is 5.81 yards or 5.31 meters. Could the tracking data be inaccurate?
", "rawMarkdown": "I worked on tracking data. Tracking data shows that the two players are in contact with each other when the distance between them is 5.81 yards or 5.31 meters. Could the tracking data be inaccurate?", "votes": null }, { "id": "2125790", "postDate": "02/01/2023 22:11:15", "content": "
There could be many potential reasons for seeing this issue. It could be tracking data quality, or incorrect labels. The helmet boxes are also not perfect and have a potential of being incorrect. Overall though you should expect reasonible distance between players when they are labeled as being in contact. Hope that helps.
", "rawMarkdown": "There could be many potential reasons for seeing this issue. It could be tracking data quality, or incorrect labels. The helmet boxes are also not perfect and have a potential of being incorrect. Overall though you should expect reasonible distance between players when they are labeled as being in contact. Hope that helps.", "votes": null }, { "id": "2126077", "postDate": "02/02/2023 04:47:58", "content": "Real world dataset are never perfect and dealing with these dirty dataset is also part of work of data scientist.
", "rawMarkdown": "Real world dataset are never perfect and dealing with these dirty dataset is also part of work of data scientist.", "votes": null }, { "id": "2127610", "postDate": "02/03/2023 01:52:10", "content": "I think this shows that the label of the dataset is manually marked by the official video frame by frame. Because only through the data of the sensor, people can't intuitively judge the contact or not, but from the perspective of the picture, people can complete the marking.
\nTherefore, I have reason to believe that in the real test set, there is also a situation where the distance is greater than 5, but it is marked as \"contact\". Maybe we need to pay more attention to the learning of pictures?
\nHope it helped :)
", "rawMarkdown": "I think this shows that the label of the dataset is manually marked by the official video frame by frame. Because only through the data of the sensor, people can't intuitively judge the contact or not, but from the perspective of the picture, people can complete the marking.\n\nTherefore, I have reason to believe that in the real test set, there is also a situation where the distance is greater than 5, but it is marked as \"contact\". Maybe we need to pay more attention to the learning of pictures?\n\nHope it helped :)", "votes": null } ], "comments": [ { "id": 2125790, "author_name": "thomasdubail", "author_url": "", "post_date": "02/01/2023 22:11:15", "content": "
There could be many potential reasons for seeing this issue. It could be tracking data quality, or incorrect labels. The helmet boxes are also not perfect and have a potential of being incorrect. Overall though you should expect reasonible distance between players when they are labeled as being in contact. Hope that helps.
", "votes": null, "replies": [] }, { "id": 2126077, "author_name": "haqishen", "author_url": "", "post_date": "02/02/2023 04:47:58", "content": "Real world dataset are never perfect and dealing with these dirty dataset is also part of work of data scientist.
", "votes": null, "replies": [] }, { "id": 2127610, "author_name": "dwchen", "author_url": "", "post_date": "02/03/2023 01:52:10", "content": "I think this shows that the label of the dataset is manually marked by the official video frame by frame. Because only through the data of the sensor, people can't intuitively judge the contact or not, but from the perspective of the picture, people can complete the marking.
\nTherefore, I have reason to believe that in the real test set, there is also a situation where the distance is greater than 5, but it is marked as \"contact\". Maybe we need to pay more attention to the learning of pictures?
\nHope it helped :)
", "votes": null, "replies": [] } ], "raw_markdown_by_id": { "2125775": "I worked on tracking data. Tracking data shows that the two players are in contact with each other when the distance between them is 5.81 yards or 5.31 meters. Could the tracking data be inaccurate?", "2125790": "", "2125795": "There could be many potential reasons for seeing this issue. It could be tracking data quality, or incorrect labels. The helmet boxes are also not perfect and have a potential of being incorrect. Overall though you should expect reasonible distance between players when they are labeled as being in contact. Hope that helps.", "2126077": "Real world dataset are never perfect and dealing with these dirty dataset is also part of work of data scientist.", "2127610": "I think this shows that the label of the dataset is manually marked by the official video frame by frame. Because only through the data of the sensor, people can't intuitively judge the contact or not, but from the perspective of the picture, people can complete the marking.\n\nTherefore, I have reason to believe that in the real test set, there is also a situation where the distance is greater than 5, but it is marked as \"contact\". Maybe we need to pay more attention to the learning of pictures?\n\nHope it helped :)" }, "source": "meta" }