Intelligent extraction model of unstructured text key information based on blockchain technology
In order to extract key information accurately and efficiently and ensure the integrity of the ex-traction process and results,an intelligent extraction model of key information from unstructured text based on blockchain technology is proposed.Unstructured text is transfered to blockchain module.The blockchain module uses the chain information structure of the block and the root node of the Hash tree to build a dis-tributed ledger of unstructured text information and a secure storage algorithm.After being encrypted by the encryption module,it is sent to the key information extraction module,and the integer linear simulation model is used to intelligently extract the key information of unstructured text.The experiment results show that the integrity of stored text information is maintained at about 98％when subjected to external disturb-ance.The accuracy rate,recall rate and F value of keyword extraction are high,and the comprehensive performance of keyword extraction is good.
blockchain technologyunstructured textkey informationintelligent extractionHash function
万方数据
维普
