 open-discussion |
General Discussion |
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| help |
Get Public Help |
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| developers |
Project Developer Discussion |
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| homals-0.9-0-on-cran |
This package implements the methods discussed in Gifi, Nonlinear Multivariate
Analysis, Wiley, 1990. In the Gifi terminology it covers homals, princals,
canals, morals, criminals, and overals. The R implementation fills several
gaps in Gifi, adding multiple ordinal, numerical, and polynomial data
transformations. Differences with previous CRAN version:
a. More R-like with S3 classes, namespace, print, plot, plot3d, summary, predict methods
b. (Much) better documented functions and data sets
c. Dynamic three-d plot using rgl
d. Static three-d plot using scatterplot3d
e. Predict method that counts "correct" classifications
f. Many bugs fixed
A paper describing the technique and implementation, with many examples,
is almost ready. There is a preprint at http://gifi.stat.ucla.edu/homalsR.pdf |
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| homals-0.9-3-available |
Homals 0.9-3 is on R-forge and soon on CRAN:
- bugs for data with missing values and various active/sets combintations fixed
- checks for active/sets arguments added
- loadings plot added (2D and 3D)
- verbose argument added for printing out iteration results
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| psychor-multiple-package |
PsychoR is now provided as a multiple package project. So far it includes homals for Gifi-models and anacor for correspondence analysis. Both are already available on CRAN. In addition, a first beta version of smacof is checked in which will be completed soon. |
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| homals--anacor--smacof |
New versions of homals and anacor are available on CRAN. Vignettes are included. A first smacof beta version for multidimensional scaling (MDS) is available on R-forge. |
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| smacof-0.9-0-submitted-to-cran |
smacof provides the following approaches of 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). Each of these approaches is implemented in a metric and nonmetric manner including primary, secondary, and tertiary approaches for tie handling. Package vignette is included. |
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| smacof-1.2-0 |
A smacof update is available on R-forge. It includes jackknife and permutation tests for MDS. |
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