In case anybody's interested, one of our (former) graduate students has done some really fascinating work on computational analysis of prenominal modifiers (adjectives, etc.). For example, her ACL paper from 2011:
Thus the challenge of modern syntactic theory - to most it is clear there is some structure occurring, but attempts to quantify it are still beaten by rather naive statistical approaches.
Mitchell, M., Dunlop, A., and Roark, B. (2011). Semi-Supervised Modeling for Prenominal Modifier Ordering. Proceedings of ACL 2011. http://www.aclweb.org/anthology/P/P11/P11-2041.pdf