Construction and application of urban brain knowledge map

With the advancement of urban brain construction , The city has accumulated a large number of Internet of things (IoT) Equipment and data , Use massive device data to solve problems Analysis and traceability , It is of great significance to the construction of urban brain . This paper is based on the resource description framework and the concept of intelligent Internet of things protocol , This paper puts forward a method of building urban brain knowledge map based on urban Internet of things ontology , The urban brain knowledge map model integrates multi-source heterogeneous data , Covering the basic elements of the city , Realize the comprehensive perception and deep cognition of urban elements . This paper focuses on event extraction in urban event ontology , A novel The language model framework jointly extracts event types and arguments , Compared with single model analysis , The event types and arguments of the joint model are better than those of the single model F1 It's worth the difference Improve 0.4% and 2.7%, In terms of time and model complexity , It also has better effect than single model cascade . Last , This research is of great importance to knowledge mapping technology and artificial intelligence can 、 Multi-sensor fusion 、GIS And other new generation information technologies , Provide theory for urban governance and service application scenarios basis .

http://jcip.cipsc.org.cn/CN/abstract/abstract3301.shtml

Urban brain is an original scientific and technological achievement born in China , It's also Hot spots in urban construction and frontier science and technology , so far , The whole country has Hundreds of cities have announced the construction of urban brains . Compared with the smart city The city focuses on industrial upgrading in the vertical field of the city , The urban brain focuses on the whole Face to face urban intelligent construction , That is, from perceptual intelligence to cognitive intelligence upgrade . The study points out that [1], Urban neural network and urban cloud reflection Arc will be the focus of urban brain construction . stay 5G、 big data 、 Artificial intelligence 、 Industrial Internet, etc Driven by the tide of science and technology , Large scale IOT sensors are deployed to cities In the city , Covering Smart Life 、 Intelligent manufacturing 、 Intelligent Transportation 、 Intelligent governance Other fields ( chart 1), The equipment network in the field constitutes the Perceive the Internet of things system , Serve the intelligent upgrading and field of urban facilities Intelligent construction . The operation of urban IOT equipment is divided according to the field 、 Deploy 、 Networking and management , The construction often has a relatively complete access platform and application system [2], Provide data collection 、 Upload and analysis , Ruli Establish a medical monitoring system with the Internet of things to monitor the health status of patients monitoring [3]. During the operation of IOT devices , Will produce a large number of word 、 Text 、 picture 、 Audio and video and other forms of data ,  However, the equipment and Between the surrounding environment 、 There is information between devices in different fields that cannot be typed through 、 Problems such as lack of unified norms across fields , As a result, data resources cannot Effective utilization .

The construction and operation of urban brain is an effective way to solve the above problems . Its construction concept is to integrate all kinds of equipment in the city 、 Urban components 、 Regulations and policies 、 Events and other elements are stored and accessed to in a certain way In the urban brain , Realize the connection between urban neurons and urban brain , structure build city City level know knowledge library , full foot city City tube The reason is and City civil clothing service Of need [4]. Knowledge atlas technology will be the key to integrate multi-source heterogeneous data in cities Technical means are needed . Knowledge atlas is a framework of resource description (Resource DescriptionFramework,RDF)[5] Of shape type Yes know knowledge body System and instance data , Realize multi-source heterogeneous data Integration and fusion of . The knowledge map is the same as the Internet of things technology , Zai Zhi Huianfang 、 Intelligent medical treatment 、 Intelligent transportation and other urban areas have a wide range of Universal application [6]. The map of urban brain knowledge has the following meanings :① Through the city Municipal governance 、 Social services 、 Urban events 、 Livelihood events 、 Many fields 、 many Multi source data such as department domain knowledge are accessed to the knowledge map , Form a wide range of Urban brain knowledge map ;② Based on the urban brain knowledge map , Calculate by using the diagram 、 Graph matching 、 Algorithms such as community discovery fully mine The relationship between data nodes , Realize the discovery of knowledge 、 Express 、 PUSH Reason and understanding [7], It is conducive to solving difficult problems in the city ;③ A sudden The concept of urban Internet of things ontology and urban Events , Solve knowledge problems effectively The problem of knowledge acquisition in atlas construction , It enhances the initiative in updating and applying knowledge maps ;④ Take the urban brain knowledge map as a branch The support of artificial intelligence is helpful to solve the problem of artificial intelligence in cities prevent 、 There are explicable problems in the field of government affairs 、 Security and reliance on big data Problems in . Based on the current technological development and urban brain construction Analysis of actual situation , The goal is to build a landing City brain knowledge Manual , Around this goal , The main work of this paper is 4 In terms of ：

(1) Around the needs of urban brain construction and current technological development , Proposed based on the Internet of things oneM2M [8] noumenon (Ontology) model type The idea of constructing knowledge map .

(2) Based on the ontology of the Internet of things , The design satisfies the urban brain Knowledge map model and ontology construction method based on .

(3) Take city events (Event) For example , Analysis and design of a A joint event extraction language model , Compared with single model aging and precision All have some improvement .

(4) The main applications of urban brain knowledge map are compared In depth analysis and exploration .