Aviation accident report cross-language retrieval classification method

The invention discloses a cross-language retrieval and classification method for aviation accident reports, which realizes cross-language retrieval and classification of aviation accident reports and provides information support for searching similar accident reports in the aviation field. According to the technical scheme, a bilingual text similarity label data set in the aviation field is constructed based on an aviation accident report database; training a bilingual text similarity data set in the aviation field by adopting an SBERT pre-training model, and performing model fine tuning and evaluation; based on an aviation accident report database, adopting Chinese information classification tags to construct a bilingual multi-level multi-tag data set in the aviation field; performing classification training on a bilingual multi-layer multi-label data set in the aviation field by adopting a BERT pre-training model, and performing model fine tuning and evaluation; in an actual application stage, a bilingual t