New Indicator of Science and Technology Inter-Relationship by Using Text Information of Research Articles and Patents in Japan

Kazuyuki Motohashi, Hitoshi Koshiba and Kenta Ikeuchi

Discussion papers from Research Institute of Economy, Trade and Industry (RIETI)

Abstract: In this study, the text information of academic papers (about 2.3 million) published by Japanese authors and patents filed with the Japan Patent Office (about 12 million) since 1990 are used for analyzing the relationship between science and technology. Specifically, a distributed representation vector using the title and abstract of each document is created, then neighboring documents to each are extracted using cosine similarity. A time trend and sector specific linkage of science and technology are identified by using the count of neighbor patents (papers) for each paper (patent). It is found that the number of patents with similar technical contents of paper decreased over time while the number of papers with similar contents of patent increased. This can be interpreted as meaning that first scientific papers advance the frontiers of science, and then technological progress (in the form of patents) follows, in fields where substantial scientific knowledge already existed. This paper proposes a new methodology of measuring science and technology linkage by using text information as a complement to traditional indicators based on non-patent literature citations of patents.

Pages: 21 pages
Date: 2021-03
New Economics Papers: this item is included in nep-ino and nep-ipr
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.rieti.go.jp/jp/publications/dp/21e025.pdf (application/pdf)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eti:dpaper:21025

Access Statistics for this paper

More papers in Discussion papers from Research Institute of Economy, Trade and Industry (RIETI) Contact information at EDIRC.
Bibliographic data for series maintained by TANIMOTO, Toko ().