基于专利数据构建显示技术优势指标,通过相关分析,探讨了中国各省区间技术布局的相似程度。研究发现除北京、广东和上海等少数省区之外,其他大多数省区间技术相似程度很高,而且加入WTO之后,技术相似程度明显增加。通过基于相关系数的聚类分析,发现北京、上海和广东等省区技术优势集中于信息通信和生物技术等高科技领域,而大部分中西部省区的技术优势则集中于药物和食品化学等领域,加入WTO之后,以信息通信和生物技术为代表的高新技术在全国的布局有进一步集中的趋势。
The similarities of regional technology distribution in China are studied in this paper using correlation analysis through revealed technological advantage ( RTA) index based on patent data. The results show that, except Beijing, Shanghai and Guangdong, the similar- ities between all provinces are very high and quite remarkable since China' s entry into WTO. Beijing, Shanghai and Guangdong concen- trate their technological advantage on high-tech fields, such as information and communication technology ( ICT ) and biotechnology, while most provinces in central and west pan of China have technological advantages in pharmacy and foxed chemistry. Being a member of WTO, the high-tech sectors are more concentrated in China, especially for ICT.