carlosbergillos / locationhistoryformat Goto Github PK

Hey,
I'm currently working on my masterthesis where I process the Google Location History. I stumbled across this Project (sadly a little bit late) and I love it. Your work helped me quite a bit to understand the data.

In the ActivityType Segment it is written that some types are sub-activity of IN_VEHICLE. From my finding I can confirm this. However I would add to this that IN_BUS and IN_CAR is is also a sub-activity of IN_FOUR_WHEELER_VEHICLE. If analyzed my data an for every activity IN_FOUR_WHEELER_VEHICLE was included IN_BUS and IN_CAR added up to the exact confidence of IN_FOUR_WHEELER_VEHICLE.

I also found that IN_FOUR_WHEELER_VEHICLE and IN_TWO_WHEELER_VEHICLE add up to IN_ROAD_VEHICLE (plus minus 1, which is probably a rounding mistake)

Also in a lot of cases (there are also a lot of cases where it not the case) IN_FOUR_WHEELER_VEHICLE, IN_TWO_WHEELER_VEHICLE and IN_RAIL_VEHICLE add up to IN_VEHICLE. In the cases where these values don't add up they are always bigger than IN_VEHICLE.

The hierarchy probably looks like this.

                    IN_VEHICLE
                       │   │
                       │   │
                       │   │
                       │   │
IN_RAIL_VEHICLE ◄──────┘   └───────► IN_ROAD_VEHICLE
                                          │   │
                                          │   │
                                          │   │
                                          │   │
                IN_FOUR_WHEELER_VEHICLE ◄─┘   └─► IN_TWO_WHEELER_VEHICLE
                         │   │
                         │   │
                         │   │
                         │   │
                IN_CAR ◄─┘   └──► IN_BUS

[
  {
    "type": "IN_VEHICLE",
    "confidence": 97
  },
  {
    "type": "IN_ROAD_VEHICLE",
    "confidence": 97
  },
  {
    "type": "IN_FOUR_WHEELER_VEHICLE",
    "confidence": 59
  },
  {
    "type": "IN_CAR",
    "confidence": 42
  },
  {
    "type": "IN_TWO_WHEELER_VEHICLE",
    "confidence": 37
  },
  {
    "type": "IN_BUS",
    "confidence": 17
  },
  {
    "type": "STILL",
    "confidence": 1
  },
  {
    "type": "UNKNOWN",
    "confidence": 1
  },
  {
    "type": "IN_RAIL_VEHICLE",
    "confidence": 1
  }
]

So there is definitely more to the story than there are subtypes to IN_VEHICLE. I hope this helped and please let me know if I should do some further testing.

See this page: https://developers.google.com/data-portability/schema-reference/location_history

This is a great initiative to document the location history data format spec.

Wondering if you or others have built anything using it and if there is a place to add those usage in this project to see those references.