Don't under-estimate the power of single layer neural networks--classifiers. They're much cheaper to train effectively and avoid over-fitting. Also, I've had go

Don't under-estimate the power of single layer neural networks--classifiers. They're much cheaper to train effectively and avoid over-fitting. Also, I've had good results using multiple classifiers that essentially cast votes and adding on hand-crafted heuristics to look through the top vote getters.