In the defense, the defense students first expounded the research background and significance of the paper, and then briefly introduced the structure of the whole paper. The main questions raised by the teacher and the brief answers during the defense are as follows:

1. Why did you choose this topic (or topic)? What is the academic value or practical significance of studying and writing it?

A: Under the immature development of China's logistics industry, it is very common for large e-commerce enterprises to build their own logistics. As the strategic existence of large-scale e-commerce enterprises, self-built logistics has great room for development, but domestic large-scale e-commerce enterprises do not know enough about self-operated logistics.

It is of practical significance to study the key factors of self-built logistics mode of large-scale e-commerce enterprises, establish the best self-built logistics distribution mode, successfully build a perfect logistics supply chain, and correctly guide the healthy development of self-built logistics of large-scale e-commerce enterprises.

2. From what aspects does the article mainly analyze and study the key factors of self-built logistics of large-scale e-commerce?

A: The core content of this paper is the research on the key factors of self-built logistics of large-scale e-commerce enterprises, which is mainly carried out in two directions: the first direction is to study the development status of self-built logistics of large-scale e-commerce enterprises; The second direction is based on factor analysis.

These two directions are to find the * * * and correlation of the main influencing factors of large-scale e-commerce enterprises, classify some factors with strong correlation and large * * * into one category, and use a new factor that can express its remarkable * * * as a key factor to explain this category.

The theoretical analysis of the development status quo is only based on theoretical refinement, and more importantly, it pays attention to theory and objective facts. The research based on factor analysis is a further study based on the previous research on the development status of self-built logistics in large e-commerce enterprises, which is more supportive and scientific.

3. Why should this paper use factor analysis to study the key factors of self-built logistics of large e-commerce enterprises?

A: Factor analysis is a method to simplify multivariate statistics and find this internal structure (or relationship). The original variables are decomposed, and then the potential "categories" are summarized. Variables with strong correlation are classified into one category, and variables with different categories have low correlation.

Each type of variable represents a "* * * factor", that is, an internal structure (or connection). The purpose of using factor analysis in this paper is to describe the relationship among many factors that affect the self-built logistics of large-scale e-commerce enterprises with a few factors, that is, to classify several closely related factors into the same category, each type of factor becomes a factor, and most of the information of all influencing factors is reflected by a few factors.

This factor, which can reflect most factors, is the key factor.

4. What's your opinion in the whole article?

A: From the whole article, in the second chapter, starting from the characteristics and conceptual theory of e-commerce logistics model and self-built logistics model, I summarized and expounded the main characteristics of self-built logistics model.

The third chapter analyzes the development status of self-built logistics of domestic large-scale e-commerce enterprises based on various materials and online data, and takes the development status of self-built logistics of typical large-scale e-commerce enterprises as an example to make a comprehensive evaluation of self-built logistics of domestic large-scale e-commerce enterprises.

In the fourth chapter, besides some theories, based on my own understanding, after studying the influencing factors of self-built logistics development in large-scale e-commerce enterprises, starting from the perspective of enterprises themselves and customers, based on the principle of seeking truth from facts, and on the basis of consulting a large number of relevant documents and academic research by scholars at home and abroad,

The key factors of self-built logistics of large-scale e-commerce enterprises are studied by factor analysis, and the key factors affecting large-scale e-commerce enterprises are analyzed in detail.