Institutional Research Information Service
UCL Logo
Please report any queries concerning the funding data grouped in the sections named "Externally Awarded" or "Internally Disbursed" (shown on the profile page) to your Research Finance Administrator. Your can find your Research Finance Administrator at https://www.ucl.ac.uk/finance/research/rs-contacts.php by entering your department
Please report any queries concerning the student data shown on the profile page to:

Email: portico-services@ucl.ac.uk

Help Desk: http://www.ucl.ac.uk/ras/portico/helpdesk
Publication Detail
Back to basics: Multivariate qualitative analysis, canonical variates analysis
  • Publication Type:
    Journal article
  • Publication Sub Type:
  • Authors:
    Davies AMC, Fearn T
  • Publication date:
  • Pagination:
    18, 20
  • Journal:
    Spectroscopy Europe
  • Volume:
  • Issue:
  • Status:
  • Print ISSN:
A study was conducted to assess the similarities and differences of canonical variate analysis with the PCA technique such as PCA are not given any information about groups and group membership but CVA is provided with the information. The number of input variables must be less than the number of samples to apply CVA, which presents a difficulty with spectroscopic data that usually has a large number of variables and can be mitigated by discarding the majority of datapoints or to use some form of compression to retain most of the information in the original data. Another difference is that the transformation from original variables to scores in PCA is a simple rotation in which the axes remain orthogonal but in CVA, the angles between the axes and the scaling of the axes changes so that elliptical shape describing within-group variability becomes a circular or spherical shape.
Publication data is maintained in RPS. Visit https://rps.ucl.ac.uk
 More search options
UCL Researchers
Dept of Statistical Science
University College London - Gower Street - London - WC1E 6BT Tel:+44 (0)20 7679 2000

© UCL 1999–2011

Search by