# Principal Tensor Analysis on k Modes

## Documentation for package ‘PTAk’ version 2.0.0

- DESCRIPTION file
- User guides, package vignettes and other documentation

## Help Pages

APSOLU3 | Associated 3-modes Principal Tensors of a 3-modes Principal Tensor
APSOLUk | Associated k-modes Principal Tensors of a k-modes Principal Tensor
CANDPARA | CANonical DECOMPosition analysis and PARAllel FACtor analysis
CauRuimet | Robust estimation of within group varinace-covariance
CONTRACTION | Contraction of two tensors
CONTRACTION.list | Contraction of two tensors
COS2 | Interpretation summaries
crimerate | data used for demo in SVDgen, PTA3
CTR | Interpretation summaries
Detren | Few useful functions for preprocessing arrays
FCA2 | Correspondence Analysis for 2-way tables
FCAk | Generalisation of Correspondence Analysis for k-way tables
FCAmet | Tool used in Generalisation of Correspondence Analysis for k-way tables
Ginv | Internal PTAk functions
howtoPTAk | howto for Principal Tensors Analysis of a k-modes Tensor
INITIA | Initialisation used in SINGVA
IterMV | Few useful functions for preprocessing arrays
Multcent | Few useful functions for preprocessing arrays
PCAn | Principal Component Analysis on n modes
plot.PTAk | Plot a PTAk object
Powmat | Internal PTAk functions
PPMA | Internal PTAk functions
preprocessings | Few useful functions for preprocessing arrays
PROJOT | Orthogonal Tensor projection
PTA3 | Principal Tensor Analysis on 3 modes
PTAk | Principal Tensor Analysis on k modes
RaoProd | Internal PTAk functions
REBUILD | Build an approximation of the tensor of any order
REBUILDPCAn | Internal PTAk functions
RESUM | Internal PTAk functions
RiskJackplot | Plot a PTAk object
SINGVA | Optimisation algorithm RPVSCC
summary.FCAk | Summary of a PTA-k modes analysis
summary.PTAk | Summary of a PTA-k modes analysis
Susan1D | Few useful functions for preprocessing arrays
svd.p | Internal PTAk functions
SVDgen | SVD with metrics and smoothing approximation
svdsmooth | Internal PTAk functions
TENSELE | Elementary Tensor product
timage12 | data used for demo in SVDgen, PTA3
toplist | Internal PTAk functions
Zone_climTUN | data used for demo in SVDgen, PTA3