Public opinion grading early warning method and system based on propagation link

The invention discloses a public opinion grading early warning method and system based on a propagation link, and relates to the technical field of information processing, and the method comprises the following steps: a data collection module collects initial data and associated comment content data, and carries out the data preprocessing; performing data emotion level judgment on the collected data through a grading early warning model to obtain negative public opinion data; judging an object of the negative public opinion data according to the established enterprise portrait; performing data analysis according to the propagation model to obtain a propagation link of the negative public opinion data, and performing influence score calculation; performing data analysis according to the propagation model to obtain a propagation link of the negative public opinion data, and performing influence score calculation; according to the scheme, grading early warning is performed on the public opinions according to the