Talk:Substitution model

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I moved the descriptions of the DNA models to Models of DNA evolution because I think they fit better there. I would like to use this page more as overview of substitution models and to make it more generic (not only DNA but also protein and codon based models). I will include shortly a discussion of empricial vs. parametrical models and then summaries and discussions of common approaches taken for DNA, amino acids and codons. I hope this idea appeals also to previous contributors to this article. If not, please let us discuss the issues. Wild8oar 13:07, 27 June 2007 (UTC)

There are some big problems with this page. The main issue is that its wrong. It claims that exponentiation a matrix must be approximated with a Taylor series. This is plainly wrong. Its not a approximation and you can easily do it with normal eigenvalue decomposition. I have too much teaching for the next few days to fix it properly (teaching precisely this material). I will see how next week goes. Delt0r (talk) 17:41, 6 December 2007 (UTC)