The invention belongs to the technical field of
artificial intelligence, and particularly relates to an emergency
perception method containing semantic extraction, which comprises the following steps of: S1, constructing a historical word
library about emergencies, and forming an association weight between a vocabulary group and a user through historical data training; s2, constructing an entity variant word expansion model based on a double-layer model to realize generation of a variant word
bank, wherein the double-layer model comprises a
proper noun expansion layer and a historical word
bank expansion layer; s3, collecting text data on a network, performing classification
processing on the text data based on a text
classification rule, and preliminarily extracting entity words; s4, inputting the extracted entity words into the variant word expansion model to obtain a corresponding variant
word group, and completing identification and extraction of the entity words; and S5, carrying out situation analysis based on the
knowledge graph, and predicting the occurrence and development situation of the emergencies. According to the method, the variant word
bank suitable for the whole network is mined on the basis of the incidence relation of different users to different similar words, and the reliability of vocabulary expansion is improved.