3 ms·
> I assumed confidence to be the probability of each task. However, often they do not add up to 100. If they do not represent probabilities what do they represe
by ehsankia 8y ago
> I assumed confidence to be the probability of each task. However, often they do not add up to 100. If they do not represent probabilities what do they represent?
The probability of each being true independently?
> How can Google possibly predict activity type between IN_TWO_WHEELER_VEHICLE vs IN_FOUR_WHEELER_VEHICLE ?!
Two wheel vehicles can often make it through traffic, in between cars.
- egypturnash 8y agoMeasuring how much the phone rolled back and forth could be a factor, too. You don’t have to keep a car balanced, you do have to keep a bike/scooter/motorcycle balanced.
- toadi 8y agoI drive a motorcycle in Thailand all the time google is more wrong than right when predicting this.
- aasasd 8y agoI'm gonna bet that Thai bike-driving habits are different from those of people in the US, at least in cities.
- nl 8y agoI going to bet there are more bike driving people with Android phones in places like Thailand, Indonesia, India and the Philippines where on-road behavior is more similar to each other than to the US. I think it's a pretty hard problem, and we shouldn't be surprised if the accuracy there is low.
- deleted 8y ago[deleted]
- jayd16 8y agoSeems feasible to detect a user at above foot speed,that appears to be stopping at intersections but seems to be more immune to congestion than others and label it as a two wheeled vehicle.
- stuppalupp 8y agohttps://developers.google.com/android/reference/com/google/android/gms/location/DetectedActivity.html#getConfidence() https://developers.google.com/android/reference/com/google/a...
- cameldrv 8y agoIt's probably a combination of features, but the suspensions are different, and two wheelers lean when they turn, which should be easy to distinguish from the accelerometer and gyros.
- GChevalier 8y ago> How can Google possibly predict activity type between IN_TWO_WHEELER_VEHICLE vs IN_FOUR_WHEELER_VEHICLE ?! Could they be using this from accelerometer data instead of GPS? https://github.com/guillaume-chevalier/LSTM-Human-Activity-Recognition https://github.com/guillaume-chevalier/LSTM-Human-Activity-R...
- GChevalier 8y agohttps://news.ycombinator.com/item?id=13049143 https://news.ycombinator.com/item?id=13049143
- kingosticks 8y agoThere are also certain roads/paths that are bike only, through convention (bike lanes) or physical width restrictions.
- mathur68 8y agoLOL. There are no such paths in India - Article Author
- kingosticks 8y agoI've never been to India but presumably you have some parks... However, I do see that google maps has the bicycle overlay greyed out for New Delhi!