Big data: Intelligent city's engine of intelligence

The intelligent city is the necessary stage of the development of the city informatization to the wisdom, and also will drive the whole development of the related industry in the process of building the intelligent city, and become the new engine of economic transformation, industrial upgrading and city promotion.

From the view of the architecture of Intelligent city, because the intelligent city is based on the technology of IoT, the architecture of Intelligent City architecture is similar to that of the internet of things, and it can be divided into four layers, namely perceptual layer, transport layer, platform layer and application layer. The biggest difference between smart cities and the digital city concept is that the information acquired by the perceptual layer is handled intelligently, so it can be considered that the intelligent city is an upgraded version of the digital city. From the city digitalization to the city wisdom, the key is to realize the intelligent processing of digital information, the core of which is the introduction of large data processing technology.

Large data technology is an inevitable choice for processing perceptual layer data. The perceptual layer is a basic physical network in which the intelligent City system perceives, identifies and collects information in the real world. To video surveillance, for example, Beijing currently used for video surveillance camera has 500,000, a camera one hours of data is a few g, every day in Beijing's video collection of data in about 3PB, and a medium-sized city each year video surveillance generated data in about 300PB, these cameras real-time return information, The requirement of data storage and concurrent processing is almost harsh. At the same time, the processing of massive data is not only the inevitable requirements of wisdom, but also a protection of IT investment, not only can not fully tap the value of data, but also for the vast number of data tired.

The construction of Intelligent City brings the explosive growth of data quantity, and the big data is like blood all over the intelligent city construction, such as intelligent transportation, intelligent medicine, intelligent life and so on, urban management is shifting from "experience management" to "scientific governance".

Large data provide strong decision support for all areas of the smart city. In urban planning, through the excavation of the natural information such as urban geography, meteorology, economy, society, culture and population, it can provide strong decision support for urban planning and strengthen the scientific and forward-looking of urban management Service. In traffic management, through real-time excavation of road traffic information, it can effectively alleviate traffic congestion, and quickly respond to sudden situation, providing scientific decision-making basis for the benign operation of urban traffic. In public opinion monitoring, through the Network keyword search and semantic intelligence analysis, can improve the timeliness of public opinion analysis, comprehensive, master sentiment public opinion, improve the ability to service, to respond to the network of unexpected incidents, to combat crimes. In the field of security and disaster prevention, through the excavation of large data, can be found in time man-made or natural disasters, terrorist events, improve emergency handling capacity and security capacity.

(Responsible editor: Fumingli)