It would be very useful to include the products in the "Principal coordinates analysis plot". The result would be a plot that is a sort of combination of the "symmetric plot" and the "Principal coordinates analysis plot".

MARS is very good for modeling where the variables have a change in importance across a data set. fx=f(x) if a> some # and 0 otherwisesee https://en.wikipedia.org/wiki/Kriging#:~:text=From%20Wikipedia%2C%20the%20free%20encyclopedia,process%20g...

in the base data, the rows are divided into blocks with colour-coded labels showing their origins. This information is needed in the AHC dendrogram so that the distribution of the blocks can be easily seen without reading the (many and tiny) row l...

Nonlinear regression ids in common use

https://fr.wikipedia.org/wiki/Analyse_par_enveloppement_des_donn%C3%A9esNot a massive need but an eventual improvement, requested by 1 user so far

Will be interesting have the possibility to decide after the calculation of the component is done how many component use for the PLS.It's exist a tool for R that is call Chemometrics agile tool (gruop of Italian chemometrics) that give the possibi...

Introduction of kernel functions in PLS can significantly improve the explanatory power of regression. Hope it comes true in future.

see above