Discussion by R. Gnanadesikan

  • Eric D. Feigelson
  • G. Jogesh Babu


The author of this well-written and interesting paper is clearly that rare combination of someone at the interface between a substantive science (astronomy in this case) and statistics who feels comfortable with the languages, problems, and methodologies of both domains. Indeed, on balance, the paper’s contents are tilted toward multivariate statistical data analysis methods (perhaps motivated by a desire to communicate with statisticians in the audience) and exhibit a knowledge of not only the more classical techniques but also more recent developments. The author’s knowledge is far from superficial on these matters and the paper demonstrates a critical ability to sort through the methods and raise relevant questions about their value and limitations.


Unsupervised Classification Euclidean Representation Critical Ability Principal Curf Multivariate Data Analysis Method 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag New York, Inc. 1992

Authors and Affiliations

  • Eric D. Feigelson
    • 1
  • G. Jogesh Babu
    • 2
  1. 1.Department of Astronomy and AstrophysicsPennsylvania State UniversityUSA
  2. 2.Department of StatisticsPennsylvania State UniversityUSA

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