On a patent analysis method for identifying the core technologies of metro in china

DOI

10.2991/iccet-15.2015.317How to use a DOI?

Keywords

Metro. Complex patent network. Node importance contribution. Core technology

Abstract

The purpose of this paper is to identify the core technologies in metro field by analyzing the overall structure of technologies and interactions among of them, which is beneficial to grasp technological trend and advance of metro field in China. For this study, the metro patent data were collected (1986-2015) from patent information analyzing system. And then, we built a complex patent network with their co-occurrence relationship of international patent classification (IPC) information. Considering the node importance depending on its original importance and importance contribution to other nodes and complex patent network’s features, we improved the node importance contribution correlation matrix (NICCM) method to calculate node importance in overall network structure.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Mei Long
AU  - Tieju Ma
PY  - 2015/11
DA  - 2015/11
TI  - On a patent analysis method for identifying the core technologies of metro in china
BT  - Proceedings of the 5th International Conference on Civil Engineering and Transportation 2015
PB  - Atlantis Press
SP  - 1701
EP  - 1707
SN  - 2352-5401
UR  - https://doi.org/10.2991/iccet-15.2015.317
DO  - 10.2991/iccet-15.2015.317
ID  - Long2015/11
ER  -