Systems and methods of tracking locations visited by mobile devices to quantify a change from a time series of responses
US9986527B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2017 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Feb 16, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W64/006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems and methods including mobile devices determining their locations using location determination units, such as GPS receivers. A computing device generates a statistical measurement of location pattern changes in relation to a predetermined region for a predetermined period of time. The measurement is generated from a difference between the average response of exposed mobile devices and the average response of non-exposed mobile devices, where each response of a mobile device is computed by: determining a sequence of time instances of the mobile devices being at locations within the region, generating a time series of visitation measurements from the time sequence, applying at a time instance an anti-symmetric weight function having an exponential distribution to the time series to generate the response corresponding to the time instance, and summing the responses corresponding to time instances falling within the predetermined period of time as the response of the mobile device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.