Event detection method and device based on graph perturbation strategy

The invention provides an event detection method and device based on a graph perturbation strategy. The method comprises the steps of obtaining a context word in a given sentence, and generating a syntactic information adjacent matrix and a splicing vector corresponding to the context word, generating a syntactic graph according to the syntactic information adjacent matrix, determining a context representation corresponding to the context word according to the splicing vector, taking the syntactic information adjacent matrix and the context representation as input of an artificial neural network, and obtaining output information, and predicting the type of the context word according to the context representation and the output information. According to the method, redundant information in sentences is filtered by introducing syntactic information and two graph perturbation strategies, important word information is reserved, loss of the syntactic information is reduced by using graph repair operation, and the