The invention relates to the technical field of text summarization, and discloses an improved TextRank text summarization method based on key
phrase selection, and the method comprises the steps: firstly, carrying out the preprocessing of an original text, and converting the original text into an independent
sentence set; obtaining a
syntactic structure tree, selecting non-terminal clause nodes, and constructing a key
phrase set; performing feature vectorization on the key phrases by using a SimBERT pre-training model, calculating
semantic similarity and constructing a text
semantic network graph; meanwhile, auxiliary weights such as
sentence positions, title similarity and keywords are calculated, and a final
sentence weight matrix is generated through linear weighted fusion; and finally, obtaining a global
score, carrying out iterative screening and redundancy
elimination processing on the candidate phrases, and outputting an abstract after reordering according to the original text logic. According to the method,
syntactic structure fine-grained screening, deep semantic interactive calculation and a dynamic redundancy
elimination mechanism are combined, the problems of insufficient
semantic mining and result redundancy of a traditional abstract method are solved, and the abstract quality is remarkably improved.