The invention provides a semi-supervised relation extraction method for aircraft fault data, which comprises the following steps of: 1,
relation classification: extracting
semantic information capable of representing a relation between entities from a text so as to realize relation extraction between the entities; the method comprises the following steps: firstly, mining context
semantic information of a fault text by using a text
encoder; utilizing a relation classifier to realize relation extraction of the unstructured fault data; step 2, pseudo
label generation: a pseudo
label generation module is adopted to generate pseudo labels for the unlabeled relational data, so that training samples of the relational data are effectively expanded, and the classification performance of a relational classification module is improved; in order to improve the quality of pseudo labels generated by the pseudo
label generation module, a meta-learning mechanism is introduced, and the
verification loss of the parameters of the
relation classification module is used as a meta-learning target to update the parameters of the pseudo label generation module; 3, self-adaptive pseudo label selection is carried out, the step aims to select a pseudo label with higher quality from pseudo label data generated by a pseudo label generation module, and then the performance of relation extraction is improved. According to the method, semi-supervised relation extraction for the unstructured fault data of the
airplane can be realized.