公开(公告)号：US20150169794A1

公开(公告)日：2015-06-18

申请号：US13829406

申请日：2013-03-14

Applicant: Google Inc.

Inventor： Hartmut Maennel

IPC: G06F17/50

CPC classification number: H04W4/023 ,  H04L67/18 ,  H04W4/029

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for determining geographic locations of devices. One of the methods includes obtaining an estimated user location associated with each respective IP address block based on observed events; obtaining an estimate of a probability model using the estimated user locations; using the estimate for the probability model and the observed events to calculate an estimate for multiple probability distributions; generating a modified estimate of the probability model; calculating a updated estimate for each of the multiple probability distributions using the adjusted estimate of the probability model; and determining a further adjustment to the estimate of the probability model based on a comparison between an overall number of outliers present in the estimates for the multiple probability distributions and an overall number of outliers present in the updated estimates for the multiple probability distributions.

Abstract translation: 方法，系统和装置，包括在计算机存储介质上编码的计算机程序，用于确定设备的地理位置。 其中一种方法包括基于观察到的事件获得与每个相应的IP地址块相关联的估计用户位置; 使用估计的用户位置获得概率模型的估计; 使用概率模型的估计和观察事件来计算多个概率分布的估计; 生成概率模型的修改估计; 使用所述概率模型的调整后的估计来计算每个所述多个概率分布的更新估计; 以及基于所述多个概率分布的估计中存在的异常值的总数与存在于所述多个概率分布的所述更新的估计中的异常值的总数之间的比较，确定对所述概率模型的估计的进一步调整。