Scientific and technological policy information automatic extraction and recommendation method and system

The invention discloses a science and technology policy information automatic extraction and recommendation method and system, and the method comprises the steps: carrying out the data collection of a target website based on a preset crawler strategy, and obtaining science and technology policy source data; performing keyword extraction on the science and technology policy source data to form feature word data; performing text conversion and semantic analysis based on the science and technology policy database, extracting entities, attributes and relational data in the science and technology policies, and constructing a knowledge graph; according to the feature word data and the user feature keywords, based on a collaborative recommendation algorithm, performing recommendation data retrieval from a knowledge graph to obtain first recommendation policy data; according to the real-time website browsing data of the user, whether the recommendation data needs to be updated or not is judged through the knowledge g