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The Approximation of One Matrix by Another of Lower Rank

Eckart, Carl, Young, Gale·1936·Psychometrika

Abstract

The mathematical problem of approximating one matrix by another of lower rank is closely related to the fundamental postulate of factor-theory. When formulated as a least-squares problem, the normal equations cannot be immediately written down, since the elements of the approximate matrix are not independent of one another. The solution of the problem is simplified by first expressing the matrices in a canonic form. It is found that the problem always has a solution which is usually unique. Several conclusions can be drawn from the form of this solution. A hypothetical interpretation of the canonic components of a score matrix is discussed.

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Authors
Eckart, C., & Young, G.
Venue
Psychometrika
Published
1936-09
Volume
1
Issue
3
Pages
211-218
ISSN
  • 0033-3123 (ISSN-L)
  • 1860-0980
OpenAlex
W2004026774
Cited by
3,800
References
0
FWCI
6.11
Type
journal article
Language
en
Open access
closed

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