سنجش

سنجش و اندازه گیری در علوم رفتاری

سنجش

سنجش و اندازه گیری در علوم رفتاری

پکیج های مربوط به مقیاس پردازی چندبعدی در نرم افزار R

در لینک زیر می توانید پکیج های مربوط به مقیاس پردازی چندبعدی را در نرم افزار R را مشاهده کنید:

http://cran.r-project.org/web/views/Psychometrics.html

 

multidimensional scaling (MDS) based on stress minimization by means of majorization: Simple smacof on symmetric dissimilarity matrices, smacof for rectangular matrices (unfolding models), smacof with constraints on the configuration, three-way smacof for individual differences (including constraints for idioscal, indscal, and identity), and spherical smacof (primal and dual algorithm).

smacof

1

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

Some other multiway methods: PCAn (Tucker-n) and PARAFAC/CANDECOMP with extensions.

PTAk

2

functionalities for computing classical MDS using the cmdscale() function.

Sammon mapping sammon()

 non-metric MDS isoMDS()

MASS

3

Non-metric MDS  with metaMDS()

 Function nmds()

Some routines

Function for metric MDS

vegan

labdsv

 ecodist

xgobi

ExPosition

4

Principal coordinate analysis with capscale()pco() and with dudi.pco()

vegan

labdsv

ecodist

ade4

5

maximum likelihood difference scaling (MLDS).

MLDS

6