Research On Construct Of Knowledge Base Facing Multimedia Online Public Opinion Semantic Recognition Based On Knowledge Graph

The online media gradually replaced the existence of traditional media and became the main place for the people to express their opinions and opinions on social events.Based on the huge user base,after the social events occur,a large number of netizens promote the derivation and dissemination of the topic,forming a network public opinion,the rapid spread of the process,and the wide coverage of the communication,all bring higher supervision to the network public opinion.Claim.Faced with the large number of online public opinion information,fast dissemination,diverse carriers,and increasingly complex content,the representation and organization of public opinion-related knowledge is an urgent need for network public opinion research and management.In the current network public opinion information management,the management system is still not perfect.When dealing with network public opinion,it lacks effective knowledge support and provides knowledge reference for decision-making.An important part of network public opinion management in semantic recognition,based on the semantic recognition of network public opinion,relevant departments can quickly respond to public opinion.This paper proposes to build a multimedia network public opinion case database based on knowledge map,which not only organizes the knowledge of event knowledge,but also provides relevant knowledge involved in the process of semantic recognition of network public opinion,providing analysis and management of network public opinion.The knowledge service is conducive to the relevant departments to obtain sensible knowledge more efficiently and improve scientific decision-making ability.This paper presents a framework for building a case base.Analyze the research on domestic network public opinion,analyze the domestic and international knowledge map and knowledge base research status,analyze the overall case base construction process,analyze the user requirements of the case base,and analyze the data library model of the case base.The server analyzes and finally verifies thefeasibility and effectiveness of the framework through a simple example.First of all,the author analyzes the research of the existing domestic network public opinion semantic recognition field and the related research on knowledge map and knowledge base at home and abroad,and finds the foothold of this paper based on the research basis of the existing articles.The author finds that the domestic research on the network public opinion theory is profound.The construction scope of the public opinion knowledge base mainly focuses on the field of emergency events.The center is more placed on the management of emergency knowledge,but the knowledge of network public opinion semantic recognition is not systematically effective.Organization.Most of the researches on knowledge bases start from the expert decision-making system,while the research on the construction of knowledge maps and knowledge bases based on semantic networks is relatively rare.On this basis,the author puts forward new ideas,integrates the knowledge map technology and the field of information science to study the semantics of network public opinion and build the knowledge base.Secondly,according to the background of the topic,the purpose of the research and the significance of the research.Through the grasp of the overall case base construction process,the author has clarified the construction ideas.Through the analysis of the components of network public opinion and semantic recognition process in the article,combined with the needs of the users of the case library,the knowledge structure in the case database is established.Through the analysis of the knowledge structure,the case of semantic recognition of multimedia network is constructed based on the seven-step method.Ontology,and establishes the server for data mapping and publishing.Finally,the lyric information is collected,the data is collected,the knowledge map is constructed,and the case base based on the knowledge map is implemented.The validity of the framework is empirically analyzed.