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PTAk (version 1.2-6)

Principal Tensor Analysis on k modes

Description

A multiway method to decompose a tensor (array) of any order, as a generalisation of SVD also supporting non-identity metrics and penalisations. 2-way SVD with these extensions is also available. The package includes also some other multiway methods: PCAn (Tucker-n) and PARAFAC/CANDECOMP with these extensions.

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Version

Install

install.packages('PTAk')

Monthly Downloads

567

Version

1.2-6

License

GPL (>= 2)

Maintainer

Didier G Leibovici

Last Published

September 24th, 2013

Functions in PTAk (1.2-6)

PROJOT

Orthogonal Tensor projection
FCA2

Correspondence Analysis for 2-way tables
FCAmet

Tool used in Generalisation of Correspondence Analysis for k-way tables
COS2-CTR

Interpretation summaries
plot.PTAk

Plot a PTAk object
APSOLU3

Associated 3-modes Principal Tensors of a 3-modes Principal Tensor
datasets

data used for demo in SVDgen, PTA3
REBUILD

Build an approximation of the tensor of any order
PTAk-internal

Internal PTAk functions
PCAn

Principal Component Analysis on n modes
howtoPTAk

howto for Principal Tensors Analysis of a k-modes Tensor
APSOLUk

Associated k-modes Principal Tensors of a k-modes Principal Tensor
CONTRACTION

Contraction of two tensors
SINGVA

Optimisation algorithm RPVSCC
CauRuimet

Robust estimation of within group varinace-covariance
PTAk

Principal Tensor Analysis on k modes
SVDgen

SVD with metrics and smoothing approximation
TENSELE

Elementary Tensor product
PTA3

Principal Tensor Analysis on 3 modes
INITIA

Initialisation used in SINGVA
FCAk

Generalisation of Correspondence Analysis for k-way tables
summary.PTAk

Summary of a PTA-k modes analysis
preprocessings

Few useful functions for preprocessing arrays
CANDPARA

CANonical DECOMPosition analysis and PARAllel FACtor analysis