Robustness Test of Explanatory Variables in Intelligent Development Evaluation

To conduct a robustness test, explanatory variables were replaced. Firstly, the comprehensive evaluation system for intelligent development utilized the entropy weight method in benchmark regression and employed vertical and horizontal techniques. The regression outcomes are presented in columns (1) and (2) of Table 4. Additionally, the development of enterprise-level intelligence was ascertained through the use of the 'Enterprise Query' platform, and Python crawler technology was used to search for relevant intelligent technology terms such as 'intelligence', 'cloud', 'data', 'Internet', and 'machine learning' in the 'business scope' and 'company name' columns. The number of intelligent enterprises in each city was then used as a measure of intelligent development, and the outcomes are displayed in columns (3) and (4).