[plt-scheme] HELP: eigenvalues/vectors?

Depends on the size of the images.  The typical eigenface datasets
tend to have smallish images, so overnight should be fine.

My suggestion: write the quick-and-dirty version with emphasis on
quick (for you); run it overnight on some sample images; and see
whether it does terminate.  Of course, at some point overnight is
going to get annoying; you may find it helpful to use the direct
floating point ops to reduce some constants.

If he can get the image data to stay completely resident in memory,
and has a reasonable processor, he should be fine.

Shriram