关键词: 新能源汽车, 电池专利, 专利丛林, 偏最小二乘

Abstract: With the advent of the information age, opening government data has become increasingly significant at the national and even international levels. A comparative analysis of the research progress of open government data at domestic and abroad is helpful in expanding the research perspective in this field in China. This paper takes the journal papers in the field of open government data at domestic and abroad as the research object, uses the bibliometric method and the visualization analysis method of knowledge graph to conduct a quantitative analysis of the journal papers in the CNKI and Web of Science database. It deeply explores research hotspots, and topic evolution path in the field of open government data at domestic and abroad, as well as identifies the main stages of research development at domestic and abroad. The results indicate that research in the field of open government data began earlier in foreign countries. Through analyzing the research themes and trends at domestic and abroad, it has been concluded that research on the data quality of open government in China lacks a detailed evaluation model. What’s more, attention should be paid to the research of open government data platforms.

Key words: Open Data, Open Government Data, Bibliometrics, Knowledge Graph, Theme Evolution