Abstract:

A review of the measurement of digital economy development is presented from region，industry，and enterprise perspectives， offering insights for the development of a comprehensive new quality productivity （NQP） assessment system. Regional level measurement relies on traditional national economic accounting frameworks，digital economy satellite accounts，and comprehensive indices. Given the multifaceted nature of the subject matter，future research should concentrate on the development of satellite accounts for NQP， employing a combination of value-added and growth accounting techniques. Industry level studies typically calculate national industrial digital inputs but cannot reflect regional variations. The inclusion of inter-regional data is essential for accurately measuring industrial digital inputs. Enterprise-level measurement，which employs traditional methods such as IT expenditure or intangible asset investment ratios， is inadequate for capturing the intricacies of enterprise digital transformation. Newer methods，such as text mining from annual reports，offer promise but require further validation. The identified gaps are addressed by analyzing multi-regional input-output tables and constructing a regional digital economy factor “input-output ” matrix，combining industry dependence on the digital economy and regional digital economy scales. The findings suggest that industrial digitalization inputs across diverse regions exhibited an overall increase during the observation period. However，notable discrepancies are observed between the developed eastern regions and the less developed inland regions. Notwithstanding their comparatively lower levels of digital input，these regions exhibited rapid growth，thereby demonstrating substantial potential for digital transformation and the likelihood of narrowing the gap with eastern regions. The digitalization input index typically reflects a trend whereby the tertiary industry exhibits the highest level of digitalization input，follow ed by the secondary industry，and then the primary industry. Those industries that are highly dependent on information perform notably well，whereas traditional manufacturing，resource-based industries，and some service sectors show relatively lower levels of digitalization input. The eastern coastal regions，particularly Guangdong and Jiangsu，occupy a pivotal position within the digital economy network，demonstrating robust economic spillover and convergence capabilities. In contrast，the central and western regions exhibit pronounced convergence abilities. The theoretical references and methodological support are provided for measuring NQP，aiding policymakers in more precisely understanding the development trends of the digital economy and crafting targeted policies to reduce the regional digital divide.

Key words: measurement of digital economy development, regional-industrial digitalization input index, digital divide