Document sentence concept labeling system, training method and labeling method thereof

A document sentence concept labeling system, a training method and a labeling method thereof are provided. The labeling method of the document sentence concept labeling system includes the following steps. An unlabeled document and one or more sentence concepts are inputted to a pre-trained language model to obtain a set of word embeddings of the unlabeled document. The set of word embeddings of the unlabeled document is inputted into a document analysis model to obtain a start position and an end position of a sentence set corresponding to each of the sentence concepts in the unlabeled document. According to each of the start positions and each of the end positions, each of the sentence sets is obtained.