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The bibliographic coupling approach to filter the cited and uncited patent citations: a case of electric vehicle technology

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Abstract

Because some cited references are not relevant to the citing patent and not all the relevant references are cited, the study attempts to use the bibliographic coupling (BC) approach to filter the irrelevant patent citations and supplement the relevant uncited patent citations to construct a patent citation network (PCN). The study selected the field of electric vehicle technology to explore the phenomenon and examined the characteristics of PCNs in terms of the average BC strength and the average citation time lag. Four PCNs were constructed in this study. The aggregated PCN (APCN) excluded the irrelevant patent citations and added the relevant uncited patent citations, which has brought out significant improvement. The APCN became more concentrated and the information which reserved in the APCN was the most current. Additionally, some invisible technology clusters and relationships were also manifested in the APCN.

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Authors and Affiliations

  1. Department of Library and Information Science, National Taiwan University, Taipei, Taiwan

    Hsi-Yin Yeh, Hsiao-Wen Yang & Wan-Chu Tsai

  2. Institute of Industrial Engineering, National Taiwan University, Taipei, Taiwan

    Yi-Shan Sung

  3. Department of Mechanical Engineering and Institute of Industrial Engineering, National Taiwan University, Taipei, Taiwan

    Dar-Zen Chen

Authors
  1. Hsi-Yin Yeh
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  2. Yi-Shan Sung
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  3. Hsiao-Wen Yang
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  4. Wan-Chu Tsai
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  5. Dar-Zen Chen
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Correspondence to Dar-Zen Chen.

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Yeh, HY., Sung, YS., Yang, HW. et al. The bibliographic coupling approach to filter the cited and uncited patent citations: a case of electric vehicle technology. Scientometrics 94, 75–93 (2013). https://doi.org/10.1007/s11192-012-0820-8

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