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Systems and methods of tracking locations visited by mobile devices to quantify a change computed based on matching populations used in change measurement
Systems and methods of tracking locations visited by mobile devices to quantify a change computed based on matching populations used in change measurement
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机译:跟踪移动设备访问的位置以量化基于基于变更测量中使用的匹配总体计算的变更的系统和方法
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摘要
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 responses of exposed mobile devices and responses of non-exposed mobile devices, which devices are selected based on a cluster analysis to match the distributions of the exposed mobile devices and the non-exposed mobile devices in an attribute space. Each response of a mobile device can be computed based on applying, at a time instance, an anti-symmetric weight function having an exponential distribution to a time series of visitation measurements to generate a 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.
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