Social Hot Topics Evolution Law And Sentiment Analysis Of Internet Public Opinions

With the rapid development of the Internet,its applications and services have widely penetrated people’s lives.As the main channel for people to publish their opinions,online social platforms are easy to form public opinions and have a certain impact on the network environment.The new crown pneumonia epidemic has brought a huge impact on the global economy,and economic and social development has been affected.With the containment of the epidemic,the country’s focus has returned to economic and social development,and the street stall economy has been brought up again,which can not only enrich people’s spare time,but also create more jobs and promote economic development.There are more and more discussions about the street stall economy,and the "street stall economy" has gradually become a hot topic in society.However,most of the current research on the street stall economy focuses on the urban management and development status of the street stall economy.This article starts with the content and comment text data published under the relevant topics of netizens on the online social platform,to understand the public’s views on the street stall economy,from the Internet public opinion governance.From the perspective,enrich the research content in the field of stall economy.In the context of the normalization of epidemic prevention and control in the post-epidemic era,this article is based on the relevant content data released by Sina Weibo,and conducts research on the hot topic "market stall economy".In order to understand the public’s attitude towards the stall economy,help the government and relevant departments make adjustments to relevant policies in line with public opinion and actively guide the development of online public opinion,and also help people understand topic development trends and make correct judgments.The python web crawler is mainly used to obtain the published content data of the Sina Weibo social platform during the period from May 21,2020 to July 22,2020,with the keyword "Street Stall Economy" and related subtopics.Netizen comment data of opinion leaders’ Weibo content,and data preprocessing such as custom dictionary,removal of stop words and Chinese word segmentation for text data.In the empirical analysis of the topic of stall economy,according to the life cycle theory of Internet public opinion,the evolution of public opinion on hot topics is divided into four periods,namely the incubation period,the outbreak period,the volatility period and the recession period.The themes and sentiment tendencies in each period are analyzed separately.,And extract the text data of Weibo comments from opinion leaders in the subtopics for word frequency and sentiment analysis.Research has found that the development law of social hot topics conforms to the online public opinion life cycle theory.The discussion content presents the law of multi-topic linkage.There is a certain correlation between the various subtopics derived from the main topic.The emotions and themes of the subtopics will also affect the main topic.Emotional orientation and subject content.The sentiment score of netizens fluctuates from large fluctuations to stable,and is affected by the content of opinion leaders’ microblogs,which affects the theme and the trend of sentiment scores to a certain extent.In the process of disseminating social hot topics,the microblog content of government official media and other opinion leaders plays an important role,providing a reference and theoretical basis for governments at all levels to rationally guide online public opinion.