ThreeWay (version 1.1.3)

pcasup3: PCASup Analysis

Description

Computes PCASup analysis in all the three directions.

Usage

pcasup3(X, n, m, p)

Value

A list including the following components:

A

Matrix of the eingenvectors of the supermatrix containing the frontal slices of the array (A-mode)

B

Matrix of the eingenvectors of the supermatrix containing the horizontal slices of the array (B-mode)

C

Matrix of the eingenvectors of the supermatrix containing the lateral slices of the array (C-mode)

la

Vector of the eigenvalues of the supermatrix containing the frontal slices of the array (A-mode)

lb

Vector of the eigenvalues of the supermatrix containing the horizontal slices of the array (B-mode)

lc

Vector of the eigenvalues of the supermatrix containing the lateral slices of the array (C-mode)

Arguments

X

Matrix (or data.frame coerced to a matrix) of order (n x mp) containing the matricized array (frontal slices)

n

Number of A-mode entities

m

Number of B-mode entities

p

Number of C-mode entities

Author

Maria Antonietta Del Ferraro
Henk A.L. Kiers
Paolo Giordani

References

H.A.L. Kiers (1991). Hierarchical relations among three-way methods. Psychometrika 56: 449--470.
H.A.L. Kiers (2000). Towards a standardized notation and terminology in multiway analysis. Journal of Chemometrics 14:105--122.
L.R Tucker (1966). Some mathematical notes on three-mode factor analysis. Psychometrika 31: 279--311.

See Also

T3

Examples

data(Bus)
if (FALSE) {
# PCA-sup
pcasupBus <- pcasup3(Bus, 7, 5, 37)
}