Analysis of Public Opinion on Weibo and Construction of Knowledge Gragh

Weibo is gradually replacing traditional media, becoming the main way for netizens and youth groups to obtain and exchange information. Weibo public opinion will have a great impact on society. This system is mainly based on the topic of public opinion mining and sentiment analysis, constructing a topic and sentiment knowledge graph on Weibo public opinion to provide a basis for guiding the direction of Weibo public opinion.