MLPV: Text Representation of Scientific Papers Based on Structural Information and Doc2vec

Text representation is the key for text processing. Scientific papers have significant structural features. The different internal components, mainly including titles, abstracts, keywords, main texts, etc., embody different degrees of importance. In addition, the external structural features of scientific papers, such as topics and authors, also have certain value for analysis of scientific papers. However, most of the traditional analysis methods of scientific papers are based on the analysis of keyword co-occurrence and citation links, which only consider partial information. There is a lack of research on the textual information and external structural information of scientific papers, which has led to the inability to deeply explore the inherent laws of scientific papers. Therefore, this paper proposes Multi-Layers Paragraph Vector (MLPV), a text representing method for scientific papers based on Doc2vec and structural information of scientific papers including both internal and external structures, and constructs five text representation models: PV-NO, PV-TOP, PV-TAKM, MLPV and MLPV-PSO. The results show that the effect of the MLPV model is much better than the PV-NO, PV-TOP and PV-TAKM models. The average accuracy of MLPV model is much more stable and higher, reaching 91.71%, which proves its validity. On the basis of the MLPV model, the accuracy of the optimized MLPV-PSO model is 3.33% higher than MLPV model which proves the effectiveness of the optimization algorithm.