[R] R: Generative Topographic Map

2010-04-02 Thread mauede
I am running GTM on the same datda space points but changing the number of latent space points, the number of basis functions and parameter sigma. I found a combination of such parameters that works fine. On the other hand on page 7 of the paper The Generative Topographic Mapping by Swensen,

[R] R: Generative Topographic Map

2010-04-01 Thread mauede
Thank you. I figured that out myself last night. I always forget that read.table does not actually read data into a matrix. GTM MatLab toolbox comes with a nice guide to use the package which may as well become an R vignette. Anyway, I got the singular matrix warnings myself and do not know

[R] Generative Topographic Map

2010-03-31 Thread mauede
I tried to use R version of package I noticed the original MatLab Pckage is much better documented. I had a look at the R demo code gtm_demo and found that variable Y is used in advanced of being created: I wrote my own few lines as follows: inDir - C:/Documents and Settings/Monville/Alanine