Sometimes it's nice to forget about 3rd party components, big clunky libraries, the Facebook API, etc. and just simulate a simple physical system from first principles. Here's "mass on a string":
I've been having a hard time trying to train a Self-Organizing Map to categorize a large pool of short documents by my selected keywords. The initial results were promising but I couldn't adjust the training parameters well enough to train the error sufficiently low that I would be confident of the categorizations, even after several days of training.
