Thanks for the comment. I agree with you in that Perl is an excellent glue language. However, I also think that it is capable of much more than that but I will leave that for another post :-) By the way, I am also interested in articles and books related to the use of Perl as a glue language for scientific computation. For example, articles in which CPAN modules for machine learning ( some of which are Perl bindings to C/C++ libraries ) are used. If you know of such articles, please, let me know.