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Research Article

A Principal Component Analysis of 39 Scientific Impact Measures

  • Johan Bollen mail,

    jbollen@lanl.gov

    Affiliation: Digital Library Research and Prototyping Team, Research Library, Los Alamos National Laboratory, Los Alamos, New Mexico, United States of America

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  • Herbert Van de Sompel,

    Affiliation: Digital Library Research and Prototyping Team, Research Library, Los Alamos National Laboratory, Los Alamos, New Mexico, United States of America

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  • Aric Hagberg equal contributor,

    equal contributor Contributed equally to this work with: Aric Hagberg, Ryan Chute

    Affiliation: Theoretical Division, Mathematical Modeling and Analysis Group, and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico, United States of America

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  • Ryan Chute equal contributor

    equal contributor Contributed equally to this work with: Aric Hagberg, Ryan Chute

    Affiliation: Digital Library Research and Prototyping Team, Research Library, Los Alamos National Laboratory, Los Alamos, New Mexico, United States of America

    X
  • Published: June 29, 2009
  • DOI: 10.1371/journal.pone.0006022
  • Featured in PLOS Collections

Reader Comments (3)

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Lack of data availability is a concern

Posted by jeisen on 09 Aug 2009 at 19:49 GMT

I am concerned about the availability of the data used in this paper. The authors state "The ranking data produced to support the discussed Principal Component Analysis is available upon request from the corresponding author with the exception of those that have been obtained under proprietary licenses." This concerns me for two reasons. 1. In this day and age, one should not have to request data from an author - it should be posted somewhere. 2. The ability for others to reproduce the work here is severely limited by the lack of access to the data obtained using proprietary licenses. While I understand why the authors might feel they have to do this, it would be useful to discuss in more detail what the reasons were for not releasing the data, since there may be those out there who could suggest ways to make the data available.

No competing interests declared.