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Chinese Journal of Management Science ›› 2023, Vol. 31 ›› Issue (11): 114-127.doi: 10.16381/j.cnki.issn1003-207x.2021.0446

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Comparative Study on Sequential Topics of Automobile Brand Quality Based on Stochastic Kriging

Wen SHI1,Yu-jie QU1,Guo-yin JIANG2()   

  1. 1.School of Business, Central South University, Changsha 410083, China
    2.School of Public Administration, University of Electronic Science and Technology of China, Chengdu 611731, China
  • Received:2021-03-07 Revised:2021-11-18 Online:2023-11-15 Published:2023-11-20
  • Contact: Guo-yin JIANG E-mail:jiangguoyin@uestc.edu.cn

Abstract:

The automobile industry is the leading and pillar industry of the national economy, and the quality and safety of cars have aroused broad public concern. Most of the research has been conducted from the aspects of the automobile recall system, its impact, and the discovery of defective products. However, no investigations are found to mine the topics of automobile recalls from large-scale text data of quality defects. The differences and the advantages and disadvantages of different automobile brands in each dimension of automobile quality under the joint venture background are studied from the perspectives of consumer complaints and automobile recalls. Since the texts of automobile recalls do not show a strong sequential correlation, the latent Dirichlet allocation (LDA) model is used to analyze it. Due to the strong sequential correlation in the texts of consumer complaints, such texts are studied based on the sequential latent Dirichlet allocation (SeqLDA) model. Considering that the SeqLDA model has more input parameters that affect the effect of model fitting, the optimized model (SK-SeqLDA), which combines stochastic Kriging (SK) and the SeqLDA model, is proposed to analyze the texts of complaints.Research shows that LDA is suitable for the texts of automobile recalls, and SeqLDA is suitable for consumer complaints. The SK-SeqLDA model can significantly enhance the fitting effect of the sequential latent Dirichlet allocation model. In addition, body accessories and upholsteries are involved in many topics in the dataset of consumer complaints. A number of topics relate to the problems of braking in the automobile recalls dataset. The recalls of imported automobiles are more proactive, mainly focused on engines; the recalls of joint venture automobiles are primarily focused on vehicle controls and brake pedals, and the proportions of topics in self-owned brands are balanced. The results provide theoretical references for automobile manufacturers in management decisions, relevant government departments in defect investigation, and consumers in purchase and vehicle maintenance.

Key words: consumer complaints, automobile recalls, SK-SeqLDA model, nonparametric bootstrap test

CLC Number: