Mathematical HR models, where are you!

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Well what am I doing at this odd hour? No I'm not partying or lounging around (exams got over today so that's what you are 'supposed' to do, aren't you :-)).
I'm looking for mathematical/analytical reward models in organisations...have been at it for 3 hrs now...can't find any like the one I had imagined would be available...Harvard Maps is some hope but not too much on it anywhere...c'mon there's got to be something somewhere...everything can't be in those brains of the people deciding it...then what are all those procedure documentations for?

Hmm...looks like there is a real danger of the onerous task of modelling a reward system for the first time, falling on these frail shoulders...hahaha.