3
$\begingroup$

There are a lot of problems that are solved by Maximum likelihood method. How to determine if the problem has a closed-form solution or not?

$\endgroup$

closed as too broad by kjetil b halvorsen, StasK, Xi'an, gung, John Oct 2 '15 at 16:25

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • $\begingroup$ By trying? seeing? $\endgroup$ – kjetil b halvorsen Oct 2 '15 at 14:01
  • 3
    $\begingroup$ @kjetilbhalvorsen: I suppose the question's really how to distinguish between its not having one & your not having tried hard enough. $\endgroup$ – Scortchi Oct 2 '15 at 14:08
  • $\begingroup$ This strikes me as more of a general mathematical question, rather than anything statistics-specific. $\endgroup$ – gung Oct 2 '15 at 16:01
2
$\begingroup$

I doubt there is a rule here but in general this can be determined from the First Order conditions. If you end up having to solve non-linear equations, which cannot be simplified, then a numerical procedure is the way to proceed.

$\endgroup$

Not the answer you're looking for? Browse other questions tagged or ask your own question.