自然语言处理全球专利计量分析

Global Patent Analysis of Natural Language Processing

自然语言处理是人工智能研究的重要方向,已经在各行各业广泛应用。该文面向揭示自然语言处理技术布局现状和竞争格局的目标,基于全球范围内2000年以来布局的自然语言处理专利数据,从整体技术和典型分支技术两个层面,从专利申请趋势、有效专利持有情况、近三年专利布局情况以及四方专利布局情况等角度,对自然语言处理技术的专利布局情况进行分析。研究发现:全球自然语言处理专利的主要布局国家是中国、美国、日本和韩国,其中中国的专利申请增长幅度最为显著,且保持持续增长态势;美国的自然语言处理有效专利持有量全球最高;美国和日本的机构四方专利申请优势明显。

Natural language processing is an important research direction of artificial intelligence,and has been widely applied to various fields and industries.In order to reveal the competition situation of natural language processing technologies,based on the global natural language processing patent data since 2000,this paper carries out the research from two aspects of overall technology and typical branch technology,and the analysis dimensions include patent application trend analysis,the analysis of patents with valid legal status,the analysis of patent applications in the past three years,and quadrilateral patent analysis.The results show that:China,the United States,Japan and South Korea are the main patent application countries;among them,China’s patent application shows the most noticeable growth,and keeps a growth trend;the United States holds the largest number of patents with valid legal status;the United States and Japan have an obvious advantage in quadrilateral patent applications.