An SAO-based approach to technology evolution analysis using patent information: Case study—graphene sensors

• 作者: Ling WEI Min WANG Shu FANG Xian ZHANG Yi WEN Zhengyin HU
• 来源期刊: 中国文献情报：英文版
• 学科: 社会科学
• 关键词: TECHNOLOGY EVOLUTION PATENT analysis SAO FEATURE d
• 年，卷（期）: 2015,（3）
• 页码范围: 62-75
• 页数: 14页
• 分类号: G306

摘要

Purpose: This paper introduces an approach to technology evolution analysis using patent information based on Subject-Action-Object(SAO) structures.Design/methodology/approach: First, SAO structures were extracted from patent documents and were cleaned. Second, several dimension-reduction techniques were used to generate technology topics. Then, the hierarchical relationships between technology topics were calculated based on patent clustering. Finally, technology evolution maps were drawn by adding a timeline.Findings: This approach can reveal technology evolution processes from multiple perspectives than other approaches.Research limitations: The semantic annotation of an SAO type is not very accurate and the semantic types of technology topics need to be enriched.Practical implications: The approach can be applied to draw technology evolution maps using different types of technology topics such as problem or solution.Originality/value: This approach offers an analytical dimension and more details than existing techniques, and it helps identify fundamental and emerging technologies more accurately and comprehensively.