Where have you been? How many days will Big Data E come out?

As the name implies, big data is a huge collection of data. Big data is divided into narrow big data and broad big data. Narrow sense of big data is mainly private information, big data of online habits, TV you like to watch in a more popular way, preferences on shopping websites and so on. General relativity is mainly aimed at enterprises and society. For example, a shopping platform on 6 18 needs to analyze shopping preferences first, then make demand forecast, and finally reserve goods in advance.

Cell phone signals come from base stations, so each region has base stations of different operators, and there will definitely be base stations in new places. When we pass by a new place, or stay in a new place for a long time, the local base station will establish a communication connection with the mobile phone, and then feed back to big data to know our location. In fact, when we travel to another city, people will receive a short message on their mobile phones before getting off the bus: Welcome to xx city. This is actually GPS location information.