Principal Tensor Analysis on k Modes R package PTAk version 2.0.0 CRAN Task View: ChemPhys (https://CRAN.R-project.org/view=ChemPhys) CRAN Task View: MedicalImaging (https://CRAN.R-project.org/view=MedicalImaging) CRAN Task View: Psychometrics (https://CRAN.R-project.org/view=Psychometrics) 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. Software Depends: R (>= 2.10), tensor Imports: graphics, stats, utils Didier G. Leibovici <GeotRYcs@gmail.com> Comprehensive R Archive Network (CRAN) Didier G. Leibovici (2010) <doi:10.18637/jss.v034.i10> GPL (>= 2) 2023-03-25 application/tgz https://CRAN.R-project.org/package=PTAk doi:10.32614/CRAN.package.PTAk