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Rotation of Iii‐Defined Principal Components
Author(s) -
Jolliffe I. T.
Publication year - 1989
Publication title -
journal of the royal statistical society: series c (applied statistics)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.205
H-Index - 72
eISSN - 1467-9876
pISSN - 0035-9254
DOI - 10.2307/2347688
Subject(s) - rotation (mathematics) , principal component analysis , mathematics , statistics , geometry
SUMMARY Following a principal component analysis, it is a fairly common practice to rotate the first few components. The idea is that the rotated versions of the components, while jointly conveying the same information as the unrotated components, may be much easier to interpret. There are some drawbacks to rotation, but it is argued in this paper that rotation can be a useful procedure. However, rotation is best reserved for groups of principal components (not necessarily the first few) whose variances are nearly equal.