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I know the formula for the likelihood of some parameters given the data. The result has to be maximised and I can avoid multiplication using the log. How can I make this a minimisation problem (i.e. rewrite the given formula). I presume it is not as easy as taking the negative log and than adding things - or is it? Thanks.
Christian
Yes, it is that simple. If you you want to maximize $\log(L)$ but you have a computational routine that minimizes a function, you can minimize $-\log(L)$.
