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Completeness and overlap in open access systems: Search engines, aggregate institutional repositories and physics-related open sources

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  • Ming-yueh Tsay
  • Tai-luan Wu
  • Ling-li Tseng

Abstract

This study examines the completeness and overlap of coverage in physics of six open access scholarly communication systems, including two search engines (Google Scholar and Microsoft Academic), two aggregate institutional repositories (OAIster and OpenDOAR), and two physics-related open sources (arXiv.org and Astrophysics Data System). The 2001–2013 Nobel Laureates in Physics served as the sample. Bibliographic records of their publications were retrieved and downloaded from each system, and a computer program was developed to perform the analytical tasks of sorting, comparison, elimination, aggregation and statistical calculations. Quantitative analyses and cross-referencing were performed to determine the completeness and overlap of the system coverage of the six open access systems. The results may enable scholars to select an appropriate open access system as an efficient scholarly communication channel, and academic institutions may build institutional repositories or independently create citation index systems in the future. Suggestions on indicators and tools for academic assessment are presented based on the comprehensiveness assessment of each system.

Suggested Citation

  • Ming-yueh Tsay & Tai-luan Wu & Ling-li Tseng, 2017. "Completeness and overlap in open access systems: Search engines, aggregate institutional repositories and physics-related open sources," PLOS ONE, Public Library of Science, vol. 12(12), pages 1-9, December.
    • Handle: RePEc:plo:pone00:0189751
    DOI: 10.1371/journal.pone.0189751
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