On Purchase Intention Of Second-hand Cars Based On Surveys And Text Mining

In the past ten years,the development of China's automobile industry has made great progress and achieved remarkable success.Thanks to this,the second-hand car industry also ushered in a better start.Some government policies have been introduced one after another to encourage the second-hand car market to continue to expand.However,compared with the mature automobile industry countries,there's a wide difference between China's second-hand car trading volume and new car trading volume,the proportion of the two is less than one-half.The western developed countries are just the opposite.The scale of China's second-hand car industry needs to be improved.Therefore,combined with the development status of China's second-hand car market,it is of great significance to study the purchase intention of second-hand car to promote the development of second-hand car market,accelerate the effective circulation of resources,and improve China's auto industry system.Based on the related papers at home and abroad and the development characteristics and problems of China's second-hand car market,the paper analyzes the relevant factors affecting the purchase intention of second-hand cars in China,find and build an indicator system for the purchase intention of second-hand cars.Besides,the purchase intention questionnaire of second-hand car has been designed.According to the surveys and the web crawler data,the purchase intention structural equation model of second-hand cars and the LDA theme model are established.Then the paper discusses the influence mechanism of the second-hand car purchase intention.The full paper is divided into four parts: The first part introduces the research background and significance,summarizes the research dynamics at home and abroad,and clarifies the research theme and content.The second part analyzes the development status and market dynamics of China's second-hand car market.The related characteristics and problems in the second-hand car market at this stage also be discussed.Based on this,the second-hand car purchase intention index system is raised.Then,the factors influencing the purchase intention of second-hand cars are analyzed,and the structural equation model of the intention to buy second-hand cars is determined preliminarily.The third part introduces in detail the program design of the second-hand car purchase intention survey and the statistical analysis process of the formal survey data,including the questionnaire design,the survey process design,and the reliability and validity test of the pre-survey questionnaire.Meanwhile,this part also conducts descriptive statistical analysis and contingency table analysis on the sample individual characteristic data obtained from the formal survey,and analyzes the correlation between the observed variables and the intention to purchase used cars.In the fourth part,based on the data of formal survey,the structural equation model of second-hand car purchase intention is established.The parameters of the model was estimated and tested by AMOS24.0 and it was modified based on the test results.Then according to the estimation result of the final model,the effects of influence between various latent variables are discussed.In addition,the paper also establishes the LDA theme model based on the web crawler data,extracting several themes from the text data.And combining the estimation results of the structural equation model,the paper analyzes the influence mechanism of the second-hand car purchase intention.Finally,it came to the conclusions and the relevant suggestions are proposed for the development of China's second-hand car market.