Where does the data pushed by epidemic big data come from?

The data pushed by the epidemic big data comes from the data of the three major operators. Big data analysis refers to the big data analysis of the three major operators, according to which cities or cities have had signaling and data interaction with individual users' mobile phones.

Epidemic prevention big data analysis

Big data analysis is basically accurate, but it will be expanded to a certain extent. The operator's base station has relatively accurate latitude and longitude. Generally, if a certain area in the city is identified as a "medium-high-risk" area, the relevant government departments will require operators to provide users who have been to these areas within a certain period of time and give corresponding reminders.

In general, the internal staff of operators will frame the base stations around the area to be investigated on the map, first define the base stations (cells) in the middle and high risk areas, and then screen out the mobile phone terminal numbers that have had data interaction and signaling interaction with these base stations (cells) at a certain time.

In order to ensure that users will not be missed, the frame selection range is even larger than the actual high-risk area, because some base stations have a long coverage distance, and if the antenna inclination angle is unreasonable, some base stations may cover 2-3 kilometers in the urban area.